Modem and Router Support

Select your modem/router to view settings and features

How to find the model number

Axon C4000 series

Zyxel C4000 series

Actiontec C3000A

More Actiontec modems

Technicolor C1100T

More Technicolor modems

Zyxel C3000Z

More Zyxel modems

Other modems and equipment

C5500XK SmartNID

Don't see your modem listed here?

Learn about using a non-CenturyLink modem

View all CenturyLink compatible modems

View list of retired CenturyLink modems

Install your modem and connect your internet

Setting up a new modem or new internet service from CenturyLink? Choose the type of modem you have to view a setup video and written instructions.

C4000 series modem setup guide

For the following models:
Greenwave C4000BG * C4000LG * C4000XG * Zyxel C4000LZ

Tower modem setup guide

For all following models:
Actiontec * Adtran * Calix * Technicolor * Zyxel (except C4000)

Connect devices to your WiFi network

Connect Devices to WiFi

Top modem troubleshooting tips

Slow or spotty internet connection? The best place to start is rebooting your modem/router.

How to reboot your modem

Is your firmware up to date? Modems usually update themselves, but you can check the settings to see if there's an upgrade available.

How to check for firmware updates

Tried the above and still having trouble? In more severe cases, a modem reset can solve the problem.

When and how to reset your modem

How to read and troubleshoot the modem lights

Depending on the model of CenturyLink modem/router that you have, the lights will function a bit differently. Choose the correct guide to help you understand what the status lights tell you and how to use them to troubleshoot your internet connection.

C4000 series modem lights guide

For the following models:
Greenwave C4000BG * C4000LG * C4000XG * Zyxel C4000LZ

Tower modem lights guide

For all following models:
Actiontec * Adtran * Calix * Technicolor * Zyxel (except C4000)

Modem WiFi settings

Basic wireless setup on your modem

How to change your WiFi password

Setting up a WiFi schedule

How to set up a guest WiFi network

Set up WPS on your modem

Manage networks (SSIDs)

Modem security settings

How to change your modem's admin password

Network security types, explained

Wireless security settings

Website blocking

Service blocking

Setting up a firewall (IPv6)

Note: Screenshots shown in our how-to articles may differ slightly from your modem's particular settings. Features may be different from model to model, and differences are noted where possible.

Advanced modem settings

Please proceed with caution! The advanced options and settings on your modem are for experienced users only. Our how-to articles provide basic instructions. In most cases, you do not want to change these settings unless you have advanced knowledge of networking or are advised by a technician.

WAN network settings

QoS (Quality of Service) setup

Dynamic routing

Dynamic DNS

DMZ hosting

Back up modem settings

Restore saved modem settings

UPnP (universal plug-and-play) setup

CBRAS setup

Port forwarding

Note: Screenshots shown in our how-to articles may differ slightly from your modem's particular settings. Features may be different from model to model, and differences are noted where possible.