Learn about using your C4000 series modem/router, including features and speed specifications, popular modem settings, and troubleshooting. You can also watch a video about controling WiFi on your C4000.
Recommended CenturyLink modem
This router comes in multiple versions with different specifications. The one you have depends on your internet connection type. Click to open the specific models below for speeds and downloadable info sheets.
Diagram of the C4000XG modem
Learn how to manage your internet and WiFi network using your modem. Below are some of our most popular topics. You can also visit the modem settings guide for a complete overview of settings and options.
Learn how to access your modem settings and how you can use them to manage your network.
Need more WiFi? If you need to boost or extend your signal, consider ordering a WiFi extender from our Accessories shop, in the WiFi Performance area.
Starting new service? Please note that a phone jack is required to set up CenturyLink internet service in your home. If you don't have a jack, chat with us to have one installed.
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