CenturyLink: can you use your own modem?
Yes — CenturyLink allows customer-owned equipment, but publishes technical requirements rather than a list of approved devices. Owning your own replaces CenturyLink's monthly equipment fee. Match every requirement below before you buy — a device that misses one will not activate. All of it is quoted from CenturyLink's own page, last checked 2026-08-25.
- Connection
- DSL (ADSL2+/VDSL2) and fiber
- Verified
- 2026-08-25
- Your modemyou buy it, or you rent it
- Your ISP's networkthey decide what connects
- The internetthe part you actually want
How do I find a modem that works with CenturyLink?
CenturyLink publishes requirements rather than naming specific devices, so match anything you shortlist against the requirements on this page, then confirm the exact model with CenturyLink before ordering.
Can I use my own modem with CenturyLink?
Yes. CenturyLink permits customer-owned equipment that meets its published requirements. In their words: "Am I allowed to use my own modem? Yes, if you understand and accept the risks involved and would still like to use a third-party modem, you may do so. You will need to get support from the modem's manufacturer."
What does a modem need to work on CenturyLink?
It must support VLAN tagging 201. CenturyLink states this twice, and adds that you must obtain a PPPoE username/password and VPI/VCI from them: "You will not be able to connect your modem to our network without these credentials."
Can I use a cable modem on CenturyLink?
No. CenturyLink states directly: "modems from cable internet providers do not work with CenturyLink internet service." Most third-party modems "don't work (or don't work well) because they aren't configured or tested on our network."
Where is CenturyLink's approved modem list?
There isn't one for third-party gear. CenturyLink says it is "unable to provide a comprehensive list of non-CenturyLink modems" and cannot guarantee any particular model. It directs you to chat to check compatibility.
What happens if I need a professional install?
You get a CenturyLink modem first. "Our technicians are unable to install service with non-CenturyLink equipment" — the technician uses a new CenturyLink modem, and you may return it once your own modem connects.
Does CenturyLink charge an equipment rental fee?
Lease $17/month.
How do I activate my own equipment on CenturyLink?
CenturyLink splits setup by whose modem it is. Re-using a CenturyLink modem: "Plug in the modem's power cord and perform a factory reset. This is necessary to clear the previous credentials and allow the equipment to connect to your new service." Then "Connect your modem with an Ethernet cord. Once the modem is reset, as long as your CenturyLink service is active, the modem should connect automatically." CenturyLink adds: "Your line should be activated no later than 7 p.m. on your service start date, at which point you can connect your modem." For a third-party modem the process is manual: "Connect your modem to a power outlet and to a working phone jack", then "Chat with us to find out if your modem is 'talking' to the CenturyLink network, and to get the credentials you need to enter in your modem settings, including the PPoE username/password, and something called VPI / VCI." …
What should I watch out for with CenturyLink?
The hard technical gate is VLAN tagging: "in order for a non-CenturyLink modem to work with our service, it must support VLAN tagging 201." CenturyLink states it twice on the same page. …
Do CenturyLink's requirements change with my speed tier?
"For a modem to work for your internet service, it must be compatible with both the connection type and the speed of your service." CenturyLink publishes tested speeds only for its OWN certified gateways, e.g. C4000LG/LZ: "ADSL up to 7 Mbps / ADSL2+ up to 20 Mbps / VDSL up to 100 Mbps"; C4000XG: "Fiber up to 940 Mbps". No speed-tier rule is published for third-party hardware beyond the VLAN requirement.
What does CenturyLink not allow?
"Our technicians are unable to install service with non-CenturyLink equipment. So, if professional installation of new service is required for any reason, your technician will use a new CenturyLink modem to set up the connection." Also: "Third-party equipment is not covered under CenturyLink's equipment replacement program" and there is "limited technical support from CenturyLink if you have service issues related to a third-party modem." Hard technical gate: "in order for a non-CenturyLink modem to work with our service, it must support VLAN tagging 201."
Two boxes
- Modemtalks to the ISP line
- Routermakes the Wi-Fi
One box — a “gateway”
- Modem + routerone unit does both jobs
Where does this information come from?
Every statement on this page is quoted from CenturyLink's own published pages:
- https://www.centurylink.com/home/help/internet/modems-and-routers/third-party-modem-support-and-settings.html
- https://www.centurylink.com/home/help/internet/modems-and-routers/third-party-modem-support-and-settings/self-install-your-own-modem.html
- https://www.centurylink.com/home/help/internet/modems-and-routers/compatible-modems.html
Other providers to compare
Providers that publish equipment requirements:altafiberConsolidated CommunicationsFrontierGoogle FiberMetronet