Internet Service Disclosure

Network Practices

Congestion Management Policy

CenturyLink monitors and proactively reinforces our network with additional capacity in areas where growth trends identify a need. If network congestion occurs, CenturyLink employs various techniques to ensure a positive customer experience and fair distribution of network resources.

Currently, based on our experience, if CenturyLink customers encounter any congestion, it is typically during the hours of peak usage — between 7 p.m. and 11 p.m. local time. During peak hours, the majority of our residential customers are using the Internet simultaneously, giving rise to a greater potential for congestion. Peak usage will vary due to extraordinary conditions such as pandemics, weather events and/or national emergencies.

When network congestion is identified, CenturyLink uses various techniques to create a good customer experience. Our network management techniques include preventing virus/spam delivery to customer email accounts. We also reinforce our network with additional capacity in areas where congestion is identified or as part of standard network engineering design plans. In some cases, we may limit the number of customers that can be served on a particular network node or, in very rare cases, we may need to downgrade the service available to existing customers until additional capacity can be added. 

CenturyLink Excessive Use Policy

The CenturyLink Excessive Use Policy (EUP) uses a 1.0 terabyte (TB) monthly data usage limit. This limit applies to all uploaded and downloaded data for all residential CenturyLink High Speed Internet (HSI) customers except for those excluded below.  Of the millions of CenturyLink HSI customers, very small fractions exceed the data usage limit provided with their monthly HSI plan.

CenturyLink is committed to providing an optimal Internet experience for every customer we serve. It is for this reason that CenturyLink places data usage limits on residential plans. The data usage limit applies to residential HSI. It does not apply to business HSI.  Residential fiber internet plans are also not subject to data usage limits.  Any residential customer receiving discounted HSI service under a program to promote broadband adoption in low-income households is also not subject to the data usage limit.  Additionally, any customer purchasing Simply Unlimited Internet is not subject to the data usage limit.

CenturyLink does not currently charge customers a fee for excessive data usage. CenturyLink will weigh variables such as network health, congestion, and the availability of customer usage data as factors when enforcing this policy. Customers who have exceeded their monthly data usage limit and are subject to EUP enforcement will be notified by CenturyLink via web notification and/or written communication.

Customers who are subject to EUP enforcement are given options to reduce their usage, subscribe to a higher-speed residential HSI plan, or migrate to an alternate HSI service that is exempt from usage limits. Our EUP is application neutral; it only considers the total usage (bytes transferred) over a defined period of time independent of protocols, applications, or the content that is generating the excessive usage.

Customers who repeatedly exceed the EUP usage limit, and interfere with other customers' use of HSI service, are subject to the CenturyLink HSI terms of service.

For additional detail about the EUP, view the questions and answers.

The links CenturyLink and other networks use to exchange traffic may also become congested at times. CenturyLink devotes considerable resources to maintaining adequate traffic exchange arrangements with these other networks and has entered into commercially negotiated agreements to exchange traffic with them on mutually agreeable terms wherever possible. Consistent with its agreements with those other networks and its long-standing practices, CenturyLink will work to establish or expand the connections between its network and other networks on mutually agreeable terms when needed. But, sometimes this is not possible due to circumstances beyond CenturyLink's control. For example, in some instances, other networks refuse to make adequate arrangements. In other instances where adequate arrangements are in place, some edge providers or their intermediaries (other networks) choose to route traffic in ways that result in congestion when there are other choices. If CenturyLink is unable to reach agreement on the terms of its interconnection or network expansion with these other networks, or if some of these other circumstances occur, it could affect a customer's ability to upload or download data via Internet endpoints connected to those networks. CenturyLink cannot guarantee that it will be able to establish or expand the connections between its network and other networks, or that subscribers will be able to upload data to or download data from Internet end points connected to other networks at any particular speed.

Application-Specific and/or User-Specific Policy

CenturyLink High-Speed Internet customers receive full access to all the lawful content, services, and applications that the Internet has to offer.

As described more fully below, CenturyLink deploys Type of Service (ToS) and Differentiated Service (DiffServe) capabilities at the customer modem and in limited network equipment deployed across the CenturyLink High-Speed Internet network for the CenturyLink Digital Home Phone service (a non-BIA or specialized service). The network equipment enabled with this capability will honor ToS and DiffServe settings of any third-party network consistent with the National Standards recommendations described in the Internet Engineering Task Force (IETF) RFC 1349 and RFC 2474.

CenturyLink does not otherwise block, prioritize, or degrade any Internet sourced or destined traffic based on application, source, destination, protocol, or port unless it does so in connection with a security practice described in the security policy section below.

CenturyLink also deploys certain user-specific policies (i.e. practices that are applied to traffic associated with a particular user or user group). Currently, these are limited to practices described above and the security practices described in the security policy section below.

Device Attachment Policy

Customers have the flexibility of attaching any modem of their choice to their CenturyLink High-Speed Internet service provided that the modem supports the technology on which the customer is provisioned. CenturyLink will not support any modem-related issues for customers that attach a non-certified modem. See a list of CenturyLink compatible modems. Customers who choose to attach a modem approved by CenturyLink may contact our High-Speed Internet Technical Support Chat.

Customers are encouraged to check the firmware in their modems to ensure that the latest version of firmware is downloaded. See guidelines on how to upgrade your modem’s firmware.

CenturyLink customers may attach devices of their choice to the modem they select. Any attached devices must be used in a manner consistent with our Terms of Service and Acceptable Use Policy.

Customers in areas where CenturyLink provides wireless hotspots can connect wirelessly using any device equipped with IEEE 802.11 protocol.

Security Policy

CenturyLink engineers are dedicated to managing our network to ensure that all customers receive the most secure online experience. We use industry-leading security practices to manage our network, provide services to our customers, and ensure compliance with our Acceptable Use Policy and the terms of our High-Speed Internet agreement. These tools and practices may change from time to time to keep up with the new and innovative ways that customers use the network and to keep up with changing network technologies.

When malicious behavior is identified, CenturyLink engineers employ various techniques to help provide a positive customer experience. Our security management techniques include ensuring that customer systems are not propagating viruses, distributing spam email, or engaging in other malicious behavior. For example, we use industry best practices to prevent virus/spam delivery to customer email accounts. We provide anti-virus and anti-malware applications at no additional charge to our High-Speed Internet customers. We also automatically detect and mitigate DoS (Denial of Service) attacks for our High-Speed Internet customers. We block malicious sites and phishing sites to prevent fraud against our customers and to prevent our customers from getting infected via DNS (Domain Name Service) blackholing and Internet Protocol (IP) address blackholing.

We reserve the right at any time to take action to protect the integrity and normal operation of our networks and to safeguard our customers from Internet threats, including fraud and other forms of abuse. Such actions may include, but are not limited to, blocking, redirecting, or rate-limiting traffic using specific protocols, delivered over specific protocol ports, or destined for particular domain names or IP addresses associated with known malicious activity.

Specific security practices deployed by CenturyLink may include but are not limited to:

IP Spoofing Prevention

The basic protocol for sending data over the Internet network and many other computer networks is Internet Protocol (IP). The header of each IP packet contains, among other things, the numerical source and destination address of the packet. The source address is normally the address that the packet was sent from. By forging the header so it contains a different address, an attacker can make it appear that the packet was sent by a different machine. The machine that receives spoofed packets will send a response back to the forged source address, which means that this technique is mainly used when the attacker does not care about the response or the attacker has some way of guessing the response.

CenturyLink applies security measures to prevent an attacker within the network from launching IP spoofing attacks against these machines and flooding the network with unwanted data that can cause congestion.

DoS/Distributed DoS Monitoring and Mitigation

A denial-of-service attack (DoS attack) or distributed denial-of-service attack (DDoS attack) is an attempt to make a computer unavailable to its intended users. Although the means to carry out, motives for, and targets of a DoS attack may vary, it generally consists of the concerted efforts of a person, or multiple people, to prevent an internet site or service from functioning efficiently or at all, temporarily or indefinitely.

CenturyLink applies various security measures to prevent someone within the network from launching DoS or DDoS attacks to ensure that customers can access the Internet when needed.

CenturyLink may block or rate-limit connections on other ports that are commonly used to exploit other customers or non-customer computers.

CenturyLink may block sites that are used in a malicious manner to infect customers, perform fraud against them and otherwise as needed to protect our network and our customers.

Port 25 Blocking

CenturyLink filters port 25 to reduce the spread of email viruses and spam (unsolicited email). Email viruses allow malicious software to control infected computers. These viruses direct the infected machines to send email viruses and spam through port 25. Port 25 filtering is a recognized Internet industry best practice for service providers like CenturyLink to filter e-mail traffic. The Messaging Anti-Abuse Working Group (MAAWG), a global organization focused on preserving electronic messaging from online exploits and abuse with the goal of enhancing user trust and confidence, recommends that "providers block incoming traffic to your network from port 25."

Learn more about port 25 filtering.

Learn more about the MAAWG Port 25 filtering best practices.

UDP Port 1900 Blocking

CenturyLink may filter User Datagram Protocol (UDP) port 1900 to prevent DoS attacks across the network. SSDP (Simple Service Discovery Protocol) runs on UDP port 1900 and is part of the Universal Plug and Play (uPnP) protocol that allows discovery and configuration of devices on a local network. Normal use of the protocol is limited to a local network, but the protocol is used by attackers in reflective DoS across the backbone.

The CenturyLink Customer Internet Protection Program (CIPP)

CenturyLink has voluntarily undertaken a program to help curtail the spread of viruses and malicious software (malware), including botnets, and assist its customers whose computers are infected with viruses and malware. The CIPP is available to CenturyLink residential and small business broadband customers on who subscribe to the CenturyLink High Speed Internet service and provides infection notification and assistance with the mitigation of virus and malware infections, including botnets, once such infections have been detected. CenturyLink proactively provides virus and malware notification, mitigation and security education for these broadband customers.

The three goals of the CenturyLink CIPP are to:

  1. Automate the notification of virus-infected customers
  2. Assist customers in an online, self-help manner to clean their computers of infections
  3. Educate customers about the dangers of viruses and malware and benefits of good internet security practices

CenturyLink residential and small business broadband customers automatically receive this service at no additional charge.

Upon notifying a customer of a detected infection, CenturyLink informs the customer of safe internet security practices and offers the customer online self-help tools, if practical, to remove the infection from the computer. The customer's unencrypted web traffic is redirected to a walled-garden to perform the notification. Ports commonly used to spread malware are blocked while the customer is in walled-garden status. Most normal customer e-mail is not blocked while the customer is in walled-garden status. These customers have the option to immediately restore their internet connection to normal service status at this point or continue through the process for mitigation of the infection. CenturyLink asks infected customers to review the internet security information that CenturyLink has provided and to access the downloadable or online tools that will help them remove the virus or malware.

The CenturyLink CIPP website also provides customers with links to virus and malware removal guides. In some cases, customers may need to contact an anti-virus or anti-malware software provider to help them remove the virus or malware. If a customer tries to remove a virus or malware and still has problems, the customer can call CenturyLink broadband technical support; however, if the customer has a malware infection, CenturyLink encourages the customer to get assistance from an anti-malware software provider. CenturyLink does not scan customers' computers for viruses or malware — nor does CenturyLink remove viruses or malware from computers for customers. Further, CenturyLink does not scan or otherwise monitor customers' content.

Other security practices to address viruses or malware

In addition to protecting its own network, CenturyLink provides information to customers to help them protect themselves, when they are online.

Performance Characteristics

Expected Performance

When you order CenturyLink High-Speed Internet access service, the service we quote you is based on an advertised "up to" connection speed. We continually upgrade our network, but our quoted speed is based on the characteristics of the relevant network facilities at the time you order. We will confirm your advertised speed at the time of installation.

The actual throughput you experience may vary. During most periods, based on CenturyLink's evaluation, most customers, except for Fiber Gigabit customers subscribed to the up to 940Mbps service as explained below, can generally expect average speeds at or above 95% of the advertised "up to" speed and many can generally expect speeds above that level. Less than 20 percent of customers can expect average speeds below 80% of the advertised "up to" speed. In rare cases, average speed may be significantly less than this level.


The service speed is established between a CenturyLink network device (such as a DSLAM) and the in-premises modem.  The service speed established between these devices may be less than the speed you ordered due to physical condition of the line and other factors. It may also vary from time to time.


The actual throughput achieved will vary due to a wide variety of factors such as the congestion issues on our network described above, as well as other factors outside of CenturyLink control such as customer location, the quality of the inside wiring within the home, the websites and other Internet resources accessed, usage and performance of the networks any data must traverse, and the customer's equipment within the home or premises.  


Latency (the time it takes for a data packet to travel from one point to another in a network) is also highly variable depending on the network path, other providers in the path, as well as the actual distance to the destination and performance of the end destination servers. It generally increases with distance of the route between the source and destination and with any congestion on the route and decreases as actual speed increases. CenturyLink measures latency by measuring the round-trip time from the consumer's home to the closest measurement server and back. CenturyLink High-Speed Internet customers generally should expect roundtrip latency to most Internet sites in the range from 3-65 milliseconds.

Packet loss (the percentage of packets that are sent by the source but not received by the destination) is also highly variable. The most common reason that a packet is not received is that it encountered congestion along the route. A small amount of packet loss is expected, and indeed some Internet protocols use the packet loss to understand Internet congestion and to adjust the sending rate accordingly. CenturyLink denotes a packet as lost if the latency exceeds 3 seconds or if the packet is never received. The Federal Communications Commission’s 11th Measuring Broadband America (MBA) – Fixed Broadband Report provides the average peak-period packet loss for each participating ISP, for that ISP’s speed tiers covered by MBA testing.  That document - available at: - reports that CenturyLink High-Speed Internet customers should generally expect to experience packet loss at a rate significantly below 1% for the CenturyLink speed tiers covered by the report, at levels unlikely to significantly affect customer experience.

Fiber Gigabit Service

The ultrafast Fiber Gigabit service delivers a line rate of 1 Gbps* speed from the network to your location with an IP bandwidth throughput of up to 940Mbps via a wired connection. Protocols within the Fiber Gigabit service technology and Internet protocol consume a small portion (around 60Mbps) of the 1Gbps line rate for signaling and control to ensure the data is reliably delivered.   All devices within the home will share the available bandwidth throughput of the Fiber Gigabit service. If multiple users or devices are connected to the service, any given speed test will show results of less than 940Mbps. Speed test results can be impacted by many factors, many of which are outside CenturyLink’s control. 


* 1Gbps = 1,000 Mbps

Factors impacting internet throughput 

The items listed below are some of the more significant items which impact service throughput on an ultrafast Fiber Gigabit service (as well as all other High-Speed Internet services) but is not an all-inclusive list. 

  • The number of devices connected to the customer’s network. A customer can use one device or many devices to access the Fiber Gigabit Internet service. When multiple devices are connected to the Fiber Gigabit service, they will share the throughput provided to the service address.  Multiple devices sharing the internet connection can affect the speed each device and its respective applications experience, depending on the applications being utilized.

  • Customer’s hardware. Personal computer, laptop, handset, tablet, gaming device, etc. must be capable of processing the throughput enabled by the Fiber Gigabit service. Processor type, operating system, browser version, memory and hard disk size are several of the many attributes impacting overall throughput (See Connected Device Minimum Requirements section for recommendations on computer hardware).

  • Internet backbone congestion. Internet congestion generally occurs in the late afternoon through late in the evening.  Accessing websites during congestion periods may limit the ability to recognize full-service throughput. Congestion could occur outside of CenturyLink’s network.

  • Website connections to the internet. Website servers may not have Fiber Gigabit network speed connectivity to the internet and are therefore not able to send requested data as fast as the Fiber Gigabit service being provided to you.

  • Website servers. Website servers may not have the memory or processor power to send data at Fiber Gigabit speeds to the internet, regardless of the website connection to the internet.

  • Other internet networks. Internet service providers around the world are interlinked to ensure all web content can be accessed.  The interlinked “peering” arrangements between service providers may impact throughput based on interconnection speeds between the service providers.  Websites being accessed may reside on other interlinked carriers’ networks with slower interconnection speeds.  Peering point congestion is managed by CenturyLink and other service providers on an on-going basis.

Fiber Gigabit in-home requirements to maximize high-speed internet throughput

To optimize the Fiber Gigabit internet throughput, CenturyLink recommends the following gateway, device and wireless configurations to help ensure the best customer experience:

Gateway / in-home networking configuration:

  • Use of the CenturyLink provided gateway
    • We recommend not attaching any additional gateway/router devices not sold/approved by CenturyLink behind the CenturyLink gateway.
  • If using an additional gateway, enable bridge mode on the CenturyLink gateway. gateway via the following steps: Advanced modem setup
  • Additional modem/gateway information

Connected device minimum requirements

Device Type Processor
Network Interface Card Operating System

Personal Computer/Windows

Intel® Core™ i5-3320M CPU @ 2.60GHz (4 CPUs) 16+ GB of RAM 1Gbps enabled Ethernet port Windows 10 (64 bit) and above
  • Internet Explorer 11
  • Microsoft Edge
  • Firefox 55 and above
  • Google Chrome 70.0.3538.77 and above


Quad-Core Intel Core i7 (or faster) processor


16+ GB of RAM 1Gbps enabled Ethernet port OS X 10.13.6 and above Safari 11.1.2 and above

Wired configuration:

  • Connect via the Ethernet port on CenturyLink gateway

  • Use 1Gbps network interface card on computer / connected hardware (Intel or Broadcom based interface cards preferred)

  • Use Cat5e or Cat6 cabling between the CenturyLink gateway and customer equipment. Ensure eight wires are connected from the cable to the RJ45 connector on each end of the cable. The wires can be visible through the transparent connector on each end of the cable.

Wireless configuration:

  • Wireless speeds will vary due to many factors such as WiFi radio enabled on the gateway, WiFi radio on the receiving device, environmental conditions, type of hardware device connecting to the service, the operating system of the device and distance between the WiFi radio and the device receiving the bandwidth. See below for further detail.

  • The Fiber Gigabit service will only deliver up to 940Mbps of throughput over a wired connection or a Wi-Fi6 (802.11ax) wireless connection.  The CenturyLink gateway sold or leased to Fiber Gigabit customers is equipped with Wi-Fi6.  And a generally expected throughput of up to 400 to 600 Mbps can otherwise be expected via a wireless connection.  The full throughput cannot be experienced over WiFi radios due to 802.11ac Wi-i technology limitations (see details below).

To optimize wireless throughput, we recommend the following:

  • Place WiFi-enabled CenturyLink gateway in a centralized location to maximize coverage, away from any devices that generate signal frequencies (microwaves, etc.)

  • Ensure the gateway has an unobstructed path to where most of the wireless devices will be operating

  • Minimize the number of wireless devices connecting to the gateway, turn off devices if not in use

  • Use 802.11ac or WiFi6 radios with the 5GHz channel enabled

Wireless factors impacting high-speed internet throughput

Wireless throughput in the home will vary due to many factors, including WiFi radio used, environmental conditions, the number of devices connected via the wireless signal, and distance between the WiFi radio and the receiving device (e.g., laptop, computer, tablet, mobile phone, etc.). The device receiving the throughput can also impact the throughput by the configuration of hardware (e.g., operating system, processor, memory, etc.).  Additional details regarding some of the more prevalent factors impacting wireless throughput are listed below:

  • Environmental limitations: walls (brick, normal drywall construction, etc.), metal cabinets, windows and HVAC duct work are a few of the many construction materials that degrade WiFi signals. Each building has unique properties that may degrade the wireless throughput.

  • Distance from CenturyLink gateway: the atmosphere (air) between the gateway and the receiving wireless device degrades the wireless signal. In general, the greater the distance from the gateway to the receiving device, the slower the speed.

  • Type of WiFi radio: There are several types of WiFi radios readily available in the marketplace. The most prevalent in the marketplace are versions 802.11b, g, n, ac and ax. The higher the letter/letter combination at the end of the 802.11 version, the higher the speed. Both the sending and receiving devices must be enabled with the same radios to achieve maximum throughput expected for any specific radio type. When two different radio types are being used between sending and receiving devices, the lower speed version will determine maximum throughput. To maximize wireless throughput, CenturyLink recommends using 802.11ax-enabled devices to achieve the greatest expected throughput range for the high-speed internet service, particularly when subscribing to the Fiber Gigabit service. See the table below regarding maximum theoretical and generally expected throughput by WiFi radio version. “Generally Expected Throughput” is a guideline, but wireless service performance will vary based on each customer’s unique environment.
WiFi Radio Version Theoretical Maximum Throughput* Generally Expected Throughput


11 Mbps <11 Mbps

54 Mbps
12 – 20 Mbps

600 Mbps 40 - 60 Mbps

1.7 Gbps 400 – 600 Mbps

WiFi6 (802.11ax)

10.0 Gbps 2.0 Gbps

* Maximum theoretical throughput is defined through the IEEE 802.11 standard. The industry standard is created and maintained by the Institute of Electrical and Electronics Engineers (IEEE) LAN/MAN Standards Committee (IEEE 802)

  • Number of devices connected wirelessly: In general, the more wireless devices connected to the service, the slower the wireless connection will be. Wireless radios generally see a reduced throughput as more devices are connected to a gateway but is dependent upon each manufacturer’s design. This is due to processor and antenna resource allocation within the WiFi radio. As more devices get connected, the radio’s resource allocation to any one device generally is decreased.

  • The use of WiFi extenders / mesh devices to improve coverage: the use of WiFi extenders or mesh devices are used to increase the WiFi signal coverage. However, each extender / mesh device may impact overall wireless throughput depending on the specific solution used. To optimize the WiFi network throughput using WiFi extenders or mesh devices, confirm WiFi radio type is consistent with the CenturyLink Gateway. Then consult the respective WiFi extender or mesh user manual(s) to validate throughput capabilities, ensure proper configuration and adherence to equipment placement recommendations.

  • Number of other WiFi networks in close proximity:  multiple WiFi networks working in close proximity can cause signal interference and throughput issues.

If, after purchasing your service, you are not satisfied with the performance you are receiving, please chat with CenturyLink Technical Support.

Actual network performance metrics

The tables below set forth peak period (7-11 pm local time, or in some cases 24 hour measures) medians for download, upload, and latency performance for CenturyLink's High Speed Internet access services — by the download and upload speed portion of your tier, respectively. It is updated on a periodic basis.

The speed data represent medians of network speeds and are derived from either actual network measurements test data throughput rates during peak period, network train rate calculations modified by statistical modeling to replicate the likely congestion experience or internal lab speed tests that CenturyLink has conducted regarding its services. The latency data is derived from actual network measured latency rates during peak period.

Speed Tier
(Advertised "Up-to" Download Speed)

Download Speed (Mbps)
Peak-Period Median Unless Noted

Latency (ms)
Peak-Period Median

256 kbps

0.25 Mbps

60.6 ms

500 kbps

0.83 Mbps

49.3 ms

512 Kbps

0.51 Mbps

60.2 ms

640 Kbps

0.87 Mbps

50.3 ms

768 Kbps

0.78 Mbps

50.2 ms

1.5 Mbps

1.6 Mbps

47.4 ms

3 Mbps

3.5 Mbps

42.0 ms

4 Mbps

4.0 Mbps

47.3 ms

5 Mbps

6.2 Mbps

35.0 ms

6 Mbps

6.3 Mbps

40.8 ms

7 Mbps

7.5 Mbps

27.2 ms

8 Mbps

8.3 Mbps

31.9 ms

10 Mbps

10.5 Mbps

30.1 ms

12 Mbps 13.4 Mbps 22.2 ms
15 Mbps 15.9 Mbps 26.0 ms
20 Mbps 21.0 Mbps 21.3 ms

25 Mbps

25.8 Mbps

21.1 ms

30 Mbps
31.5 Mbps 21.1 ms

40 Mbps

40.3 Mbps

19.3 ms

60 Mbps

60.0 Mbps

18.0 ms

80 Mbps

80.0 Mbps

15.3 ms

100 Mbps

100.0 Mbps

7.1 ms

120 Mbps

117.0 Mbps

7.3 ms

140 Mbps
139.9 Mbps 3.0 ms
200 Mbps
216.1 Mbps 2.9 ms
500 Mbps
527.6 Mbps 5.2 Mbps
750 Mbps
790.1 Mbps 3.6 ms
940 Mbps
944.5 Mbps 3.0 ms

Speed Tier
  (Advertised "Up-to" Upload   

  Upload Speed (Mbps)
Peak-Period Median Unless Noted  

128 kbps

0.26 Mbps

250 kbps

0.48 Mbps

256 kbps 0.31 Mbps

384 kbps

0.43 Mbps

500 kbps 0.70 Mbps

512 kbps

0.54 Mbps

640 kbps

0.78 Mbps

768 kbps

0.81 Mbps

896 kbps

0.86 Mbps

1 Mbps

1.1 Mbps

1.5 Mbps

1.8 Mbps

2 Mbps

2.5 Mbps

3 Mbps 3.4 Mbps

5 Mbps

5.5 Mbps

10 Mbps

10.8 Mbps

20 Mbps

21.3 Mbps

50 Mbps

53.4 Mbps

100 Mbps

109.0 Mbps

200 Mbps

215.3 Mbps

500 Mbps 531.7 Mbps
750 Mbps 797.5 Mbps
940 Mbps 935.6 Mbps

Consumers may also determine the High-Speed Internet speeds available at their address on the CenturyLink website. For a full description of the CenturyLink High-Speed Internet service, please refer to the service agreement.


Once service is installed, customers can also determine the throughput of their High-Speed Internet service via the CenturyLink Speed Test.

These websites will provide the throughput, latency results for service provisioned over the CenturyLink network. Third-party speed test results may be different than the data provided on the CenturyLink-provided speed test since third-party sites may include data for non-CenturyLink network facilities.

All CenturyLink High-Speed Internet services are provided either by fiber, DOCSIS, wireless hotspots, or digital subscriber line technology. The particular technology for your service will be based upon what is available in your geographic area. CenturyLink High-Speed Internet services may be suitable for real-time applications such as Voice over Internet Protocol or VoIP. The suitability for real-time applications depends on the speed purchased, bandwidth required for the application, and time of day usage of the application.

Network speeds for CenturyLink High-Speed Internet services provided over wireless hotspots may vary. The performance the user experiences, once they connect, may vary based on any number of factors, such as the maximum bandwidth allocated for WiFi services, the number of other users trying to use the same WiFi at the same time, the user's computer or wireless device, the WiFi receiving antenna, and the distance from the WiFi router. These WiFi routers use spectrum that the FCC has allocated for "unlicensed" use, which means that, like wireless routers used for in-home networking, the use of this spectrum is not protected from interference from other devices using the same spectrum in the same geographical area. This makes it inherently difficult to predict what kind of performance you can expect.

CenturyLink Non-Broadband Internet Access (or 
Specialized Services) Policy

CenturyLink offers certain non-broadband internet access services (or specialized services).

CenturyLink® Digital Home Phone

CenturyLink offers a Voice over Internet Protocol (VoIP) service called Digital Home Phone to customers with CenturyLink High-Speed Internet service which, due to the product's sensitivity to latency, receives quality of service (QoS) treatment on the CenturyLink network where it is available. This treatment of VoIP traffic should have no material impact on capacity or bandwidth availability for broadband internet access.

Customers purchasing CenturyLink Digital Phone service may experience a higher quality of service through improved latency for upstream voice packets carried over the CenturyLink High-Speed Internet network. This higher quality of service is enabled through Type of Service (ToS) and Differentiated Service (DiffServe) capabilities at the customer modem and in limited network equipment deployed across the CenturyLink high-speed internet network. The setting established at the modem may be modified by our customers.

The network equipment enabled with this capability will honor ToS and DiffServe settings of any third-party network consistent with the National Standards recommendations described in the Internet Engineering Task Force (IETF) RFC 1349 and RFC 2474.

CenturyLink® Digital Home Phone customers can find additional disclosures regarding their service in the Subscriber Agreement.

Commercial terms

General pricing policies

CenturyLink offers mass market retail High-Speed Internet service to residential and business customers. Customers may purchase their CenturyLink High-Speed Internet service with other valuable services offered by CenturyLink such as voice, or video services from CenturyLink, or DIRECTV. Customers may also purchase CenturyLink High-Speed Internet service as a stand-alone product called Pure Broadband or Pure Business Internet. Availability, features, rates, terms, and conditions may vary by location.

CenturyLink residential High-Speed Internet service offers a variety of speed and features to consumers with available speeds from 256 Kbps/256 Kbps up to 940 Mbps/940 Mbps and including email, customizable homepage, and backup and support services. Upgrades are available at a small cost for increased backup space, upgraded security options, PC tune ups and discounted or free in-person support. In certain areas where CenturyLink has deployed fiber to the premises facilities, speeds up to 940Mbps may be available.

Current information, including pricing information, for CenturyLink residential High-Speed Internet service.

Customers served via CenturyLinkON platforms in multi-tenant buildings can find pricing information here


Wireless networking is also available over CenturyLink residential High-Speed Internet service. Get additional information regarding wireless networking.


CenturyLink business retail High-Speed Internet service provides a variety of speed and features for businesses with speeds from 256 Kbps/256 Kbps up to 940 Mbps/940 Mbps to choose from, including email accounts, web hosting, 1 GB storage, domain name registration, backup solutions, security options and more. Get information, including pricing information, about CenturyLink's business High-Speed Internet service.


Customers purchasing CenturyLink business retail High-Speed Internet service may use a CenturyLink-provided modem with built-in WiFi router capabilities. See more information regarding CenturyLink's business retail Wi-Fi High Speed Internet service.


Customers may purchase CenturyLink High-Speed Internet service as a stand-alone product called Pure Broadband or Pure Business Internet where available or they may choose to combine High-Speed Internet with voice, or television from CenturyLink or DIRECTV on one bill and save over the cost of purchasing stand-alone services. See current information, including pricing information, regarding CenturyLink's Pure Broadband service.

Customers can learn about the specific pricing and service availability where they live by visiting Customers have access to the latest CenturyLink promotional and standard pricing for High-Speed Internet service, including applicable activation fees. Customers can also see options and pricing for modem purchase and lease options, standard and premium installation, third party ISP, premium web content and backup, and security and support options.


Customers may also speak with a CenturyLink representative to learn about services in their area by calling CenturyLink at 1-888-273-5881.


CenturyLink's current High-Speed Internet service offering does not include usage-based fees. Get full disclosure of CenturyLink's Excessive Use Policy, Acceptable Use Policy, and High-Speed Internet Subscriber Agreement.


CenturyLink may include an early termination fee in the terms of High-Speed Internet services and promotions offered to customers. The applicability and the extent of an early termination fee may vary depending on the terms of the specific service or promotion purchased by the customer. Customers should reference their High-Speed Internet Subscriber Agreement, advertisement, the terms described in their original order and their order confirmation for details regarding the specific pricing, terms, and the calculation of any early termination fee that may apply to them.


Customers in areas where CenturyLink provides High-Speed Internet services using wireless hotspots with CenturyLink's WiFi service should consult the applicable web site in their area for pricing schedules.

Commercial terms

CenturyLink offers both standard and promotional rates (promotional rates typically require a commitment to keep the service for a term of months or other conditions). Standard rates and promotional rates typically vary according to speed tier, whether you are bundling with another CenturyLink service, and the length of time you commit to keep the service. As a result, and given the high ongoing volume of CenturyLink sales, it is not practical to provide a standardized disclosure with your specific information that can be provided at point of sale.


However, the full monthly service charge applicable to you, for the specific service you are purchasing, is reflected in the order confirmation you will be provided at purchase when purchasing online, and in the verbal order summary provided at purchase when purchasing through our telephone sales channel.


This order confirmation, or order summary, respectively, will also indicate whether your rate is a promotional rate and, if so, will specify the duration of the promotional period. The monthly service charge that will apply after the expiration of any promotional period will always be the then-applicable standard pricing for your service. Standard pricing varies over time and, as noted, is ultimately dependent upon a variety of factors like whether you are bundling with other services. The standard rate information reflected at: provides an approximation of the highest standard rates that could apply to your speed tier today. Other details about CenturyLink's pricing policies, including a more complete description of the CenturyLink promotions and bundled savings currently available can be found on the CenturyLink website.

Other charges and terms

Modem lease or purchase

CenturyLink offers modems to customers on a monthly lease basis or a one-time purchase basis. Customers may use their own modem; please see our Device Attachment Policy above.

One-time fees

Certain one-time fees (activation and professional installation fees, shipping and handling charges) may apply to you in connection with the purchase of your broadband service. As with the monthly service charge, there is so much variation in these fees for individual transactions, it is not practical to provide a standardized disclosure with your specific information that can be provided at point of sale. However, the one-time fees applicable to you at purchase are also reflected in the order confirmation you will be provided at purchase when purchasing online or and in the verbal order summary provided at purchase when purchasing via telephone sales.


Other one-time fees (early termination fees) will be imposed if you cancel your service before the end date of your contract with CenturyLink. The early termination fee will be calculated by multiplying the number of months remaining on your contract and your promotional monthly rate, up to a maximum of $200.


CenturyLink may require a one-time deposit for your service. This deposit is based on the level of risk associated with each specific application or order and the company credit strategy.

Other monthly fees

Internet Cost Recovery Fee: Amount varies by location and is subject to change, but currently ranges from $1.99 to $3.99 per month.

Government taxes, government-related fees, and CenturyLink fees and surcharges may apply

These charges vary by location and may change.  In addition, CenturyLink reserves the right to pass through or institute new charges related to service.


See additional details about taxes, government related fees, and CenturyLink fees and surcharges.

Privacy policy

Like most companies, we possess certain information about our customers to provide our services. We also share it as needed to provide service or fulfill our legal obligations. We protect the information we have about our customers, and we require those we share it with to protect it, too. We use information generated on our networks to manage those networks, to plan for future development, and to keep our services running reliably and efficiently. For example, we monitor data to check for viruses, to control spam, to prevent attacks that might disable our services, to ensure that your traffic does not violate your subscriber agreement or our acceptable use policies, and to guard against other inappropriate or illegal activity. This may involve looking at the characteristics of our network traffic, such as traffic volumes, beginning and ending points of transmissions, and the types of applications being used to send traffic across our network. In limited circumstances, we need to look into the content of the data (such as the specific websites being visited, files being transmitted, or application being used) for the purposes described above, in circumstances when we are concerned about fraud or harassment, to repair a problem we detect or that a customer contacts us about, or when we are providing the content of broadband traffic to law enforcement which we only do as authorized by law.


You can read more detail about our information gathering practices.

Customers may view the complete CenturyLink Privacy Policy.

Redress options policy

If you have any questions or concerns regarding CenturyLink High-Speed Internet services and the subjects of this disclosure, you may send an email to:


Please include the following information:

  • Subject Line: Internet Management Disclosure
  • Name: (Optional)
  • High-Speed Internet service address
  • A summary of the nature of your concern


CenturyLink takes all such questions and concerns seriously. The appropriate CenturyLink personnel will review all such submissions and respond in a timely manner.