Modem and Equipment Support

Modem User Guides

Learn about your CenturyLink modem

Top modems

Look for the model number on your modem sticker

Fiber modems

Older modems - TIME TO REPLACE!

The following models are retired or being retired soon, and should be replaced as soon as possible. Visit the retired modems page to get specifications and firmware for each of the modems listed below.

Retired Modems

Actiontec

C1000A

C2000A

C1900A

C2000A

PK5000A

PK5001A

Q1000A

Technicolor

C1100T

C2000T

Zyxel

C1000Z

C1100Z

FR1000Z

PK5001Z

Q1000Z

Looking for something else?

Compatible CenturyLink modems

Using a non-CenturyLink modem

Modem settings overview

Modem Setup

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 modem setup

For the following models:
C4000BG * C4000BZ * C4000LG * C4000LZ * C4000XG

Tower modem setup

For the following models:
C3000Z * C3510XZ * C844G * C424G * C2300A * PK5000Z

Premium WiFi setup

For following models:
C5500XK SmartNID

Connect devices to your WiFi network

Connect devices to WiFi

Troubleshooting

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 technician or support agent may instruct you to do a modem reset.

How to reset your modem

The best solution is prevention. Learn how to care for your router.

Router care

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 single status light guide

For the following models:
C4000BG * C4000BZ * C4000LG * C4000LZ * C4000XG

Tower modem lights guide

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

Guide to the modem lights (C4000 series)

Guide to the modem lights (tower-style modems)

WiFi and Security

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

Modem security settings

How to change your modem's admin password

Network security types

Wireless security settings

Website blocking

Service blocking

Security types and WiFi standards of top CenturyLink modems

Modem Model	Security Type	WiFi Standard
C4000	WPA3	WiFi 6
C3510XZ	WPA2-PSK	WiFi 6
C3000Z	WPA2-PSK	WiFi 6
C2300A	WPA2-AES	WiFi 5
PK5000Z	WPA2	WiFi 5
C2100	WPA2-AES	WiFi 5
C424G	WPA2-AES	WiFi 5
C844G	WPA2-AES	WiFi 5