CenturyLink compatible modems

You may have a modem that you used at a previous location or with a different provider, and wonder if you can use it for your CenturyLink internet service. This page covers which modems are recommended for best performance with CenturyLink service and which modems are CenturyLink certified, plus answers to some common questions about modem compatibility.

Understanding modem compatibility

 

Every modem is built to work with a specific type of internet technology and in a particular speed range. CenturyLink uses different core technologies (fiber and different types of DSL) depending on your location and the speed you selected.

 

Why does this matter? Even if you have a CenturyLink modem, it will only work if it is compatible with the specific technology and speed of your service.

CenturyLink's all-in-one modem/router, referred to as a gateway, allows you to connect your WiFi-enabled devices to the internet without additional equipment. The latest, premium WiFi gateways that we offer are the models pictured here.

When ordering internet service, the right gateway will automatically be selected for you based on the internet technology and speed available at your address. 

Certified modems tested for CenturyLink compatibility

"Certified" means our modems have been tested on the CenturyLink network to make sure they perform as expected and work with our internet technology. The drop-down below includes all the CenturyLink-certified modems that are currently in use. 

Select a brand and model to see modem compatibility details. 

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Modem compatibility table


* The newest models are shown below in green. Learn more >

 

  Technology: DSL
MAX Tested Speeds
Technology: Fiber
MAX Tested Speed
   
Model ADSL ADSL2+ VDSL2 GPON Ports Features
Actiontec C1000A 7 Mbps 20 Mbps 80 Mbps N/A Gig Eth (4); USB Host Port IPv6, Vectoring, 2.4 GHz b/g/n
Actiontec C1900A 7 Mbps 20 Mbps (40 Mbps pair-bonded) 40 Mbps (100 Mbps bonded)  940 Mbps Gig Eth (4); USB Host Port IPv6, Vectoring, 2.4 GHz b/g/n
Actiontec C2000A 20 Mbps 20 Mpbs (40 Mbps bonded) 40 Mbps (100 Mbps pair-bonded)  940 Mbps Gig Eth (4); USB Host Port IPv6, Vectoring, 2.4 GHz b/g/n
Actiontec C2300A N/A 25 Mbps bonded 100 Mpbs (200 Mbps pair-bonded) 940 Mbps Gig Eth (4); USB Host Port IPv6, Vectoring, 2.4 GHz b/g/n, 5 GHz n/ac, Vectoring, CBRAS
Actiontec C3000A 20 Mbps 25 Mbps (40 Mbps pair-bonded) 100 Mpbs (200 Mbps pair-bonded) 940 Mbps Gig Eth (4); USB Host Port IPv6, Vectoring, 2.4 GHz b/g/n, 5 GHz n/ac
Actiontec PK5000 20 Mbps 20 Mbps N/A N/A 100 Mbps Eth (4) 2.4 GHz b/g
Actiontec PK5001A 20 Mbps 20 Mbps N/A N/A 100 Mbps Eth (4) IPv6, 2.4 GHz b/g/n
Actiontec Q1000 7 Mbps 20 Mbps 40 Mbps N/A Gig Eth (4); USB Host Port IPv6, VectoringB, 2.4 GHz b/g/n
Adtran C424G N/A N/A N/A 940 Mbps Gig Eth (4)   CenturyLink ON, IPv6, 2.4 GHz b/g/n, 5GHz n/ac
Calix C844G N/A N/A N/A 940 Mbps Gig Eth (4); USB Host Port CenturyLink ON, IPv6, 2.4 GHz b/g/n, 5GHz n/ac
Cisco 2200DDR N/A 25 Mbps pair-bonded N/A 100 Mbps 100 Mbps Eth (4) Prism TV, 2.4 GHz b/g
Greenwave C4000BG 40 Mbps pair-bonded 40 Mbps pair-bonded 140 Mbps pair-bonded N/A

Gig Eth (5), USB Host Port IPv6, 2.4 GHz b/g/n, 5 GHz n/ac/ax, CBRAS
Greenwave C4000LG 100 Mbps 100 Mbps 100 Mbps N/A Gig Eth (5), USB Host Port IPv6, 2.4 GHz b/g/n, 5 GHz n/ac/ax, CBRAS
Greenwave C4000XG N/A N/A N/A 940 Mbps Gig Eth (5), USB Host Port IPv6, 2.4 GHz b/g/n, 5 GHz n/ac/ax, CBRAS
Technicolor C1100T 7 Mbps 20 Mbps 40 Mbps 940 Mbps Gig Eth (4); USB Host Port IPv6, Vectoring, 2.4 GHz b/g/n, CBRAS
Technicolor C2000T 20 Mbps 20 Mbps (40 Mbps pair-bonded) 40 Mbps (100 Mbps pair-bonded)  940 Gbps Gig Eth (4); USB Host Port IPv6, Prism TV, Vectoring, 2.4 GHz b/g/n
Technicolor C2100T 20 Mbps 20 Mbps (40 Mbps pair-bonded) 40 Mbps (100 Mbps pair-bonded)  940 Gbps Gig Eth (4); USB Host Port IPv6, Prism TV, Vectoring, 2.4 GHz b/g/n, 5 GHz n/ac, Vectoring, CBRAS
Westell 7500 6 Mbps 10 Mbps  N/A N/A Eth (4) 2.4 GHz b/g
Zyxel C1000Z 7 Mbps 20 Mbps 40 Mbps N/A Gig Eth (4); USB Host Port IPv6, Vectoring, 2.4 GHz b/g/n, CBRAS
Zyxel C1100Z 20 Mbps 20 Mbps 100 Mbps 940 Mbps Gig Eth (4); USB Host Port IPv6, Vectoring, 2.4 GHz b/g/n, CBRAS
Zyxel C2100Z 20 Mbps 20 Mbps (40 Mbps pair-bonded) 40 Mbps (100 Mbps pair-bonded)  940 Mbps Gig Eth (4); USB Host Port IPv6, Vectoring, 2.4 GHz b/g/n, 5 GHz n/ac, Vectoring, CBRAS, Prism TV
Zyxel C3000Z 40 Mbps 40 Mbps 80 Mbps (100 Mbps pair-bonded) 940 Mbps Gig Eth (4); USB Host Port IPv6, Vectoring, 2.4 GHz b/g/n, 5 GHz n/ac, Vectoring, CBRAS
Zyxel C3510XZ N/A N/A N/A 940 Mbps Gig Eth (5), USB Host Port IPv6, 2.4 GHz b/g/n, 5 GHz n/ac/ax, CBRAS
Zyxel C4000LZ 100 Mbps 100 Mbps 100 Mbps N/A Gig Eth (5), USB Host Port IPv6, 2.4 GHz b/g/n, 5 GHz n/ac/ax, CBRAS
Zyxel FR1000Z N/A N/A N/A 500 Mbps Gig Eth (4); USB Host Port C IPv6, 2.4 GHz b/g/n
Zyxel PK5000Z 20 Mbps 20 Mbps N/A N/A 1000 Mbps Eth (4) 2.4 GHz b/g
Zyxel PK5001Z 20 Mbps 20 Mbps     N/A N/A Gig Eth (4); USB Host Port IPv6, 2.4 GHz b/g/n
Zyxel Q1000Z 7 Mbps 20 Mbps 40 Mbps N/A 100 Mbps Eth (4) 2.4 GHz b/g/n

 

Note: Listed speeds reflect the maximum speed the technology can accomodate. In-home speeds may differ based on router setup, devices and other factors.

Where to find the make and model on the modem sticker:

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tower modem sticker - make and model

You can find the name of the manufacturer and model number printed on the sticker attached to the side, back or bottom of the modem.

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C4000 sticker modem make and model

You can find the name of the manufacturer and model number printed on the sticker attached to the side, back or bottom of the modem.

Don't see your modem listed?

If your modem is not on the CenturyLink certified or recommended modem list, it’s either a retired CenturyLink device or what’s called a third-party modem (from another provider).

 

CenturyLink highly recommends using one of our certified or recommended WiFi modems (gateways), which have been tested and approved to work optimally with our high-speed internet technology. Retired and third-party devices are more likely to cause performance issues and may not connect to your internet service correctly. 

 

If you're ready for an upgrade, contact us to purchase or lease a new modem.

Frequently asked questions about CenturyLink modems

Have more questions about CenturyLink modems? Check out the most common questions and answers below.  

For optimal performance, the preferred models for CenturyLink DSL internet service are:

The compatible models for CenturyLink Fiber service are:

You will get the best experience and performance by using certified CenturyLink equipment. Why? Our modem/router combo (gateway) is tested and guaranteed to be optimized for maximum performance and easy setup. Our modems also come with free 24/7 tech support. You can purchase or lease a compatible modem from CenturyLink to use with your service. If bringing your own modem is an option, you will see a note during the online order process. However, not all modems are able to connect to CenturyLink internet service. Check the drop-down above to learn more about each model of gateway offered.

Read more about using third-party modems.

"Certified" means our modems have been tested on the CenturyLink network to ensure they are compatible with our internet technology and that they perform as expected. Our technical experts determine the modem's maximum speed and check IP compatibility. All CenturyLink-certified modems include 24/7 technical support and free McAfee security protection.

If you are looking to use a different modem with your existing service, our representatives can help you determine compatibility. If you are ordering new service, you will be guided to purchase or lease the correct CenturyLink modem to get the best connection and performance. 

A modem is the essential equipment needed to bring internet service into your home from the larger network. A router is what allows you to access that internet connection from all your wireless devices throughout your home over WiFi. 

The equipment provided by CenturyLink is a combination modem and router in one easy-to-use unit. We refer to this unit as a gateway. 

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