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While Best Buy mainly stocks cable modems, they occasionally carry or can order these CenturyLink-compatible units: Zyxel C3000Z

If you are looking to replace your CenturyLink rental with a modem from Best Buy , it is crucial to first identify if you have or Fiber service. Most modems sold at big-box retailers are for cable internet (Xfinity, Cox, Spectrum) and will not work with CenturyLink’s DSL lines. Best Options Available at Best Buy

CenturyLink DSL modems usually have a green "DSL" port for a phone line. If the box says "Coax" or "Cable," it's the wrong technology.

as my main router for more stable and superior WiFi performance.” Reddit · r/centurylink · 2 years ago

Do not buy modems labeled "DOCSIS 3.1" or "Cable Modem" (like the Netgear Nighthawk CM1000 Go to product viewer dialog for this item.

(~$184): Often cited as the "gold standard" for CenturyLink DSL. It supports bonded VDSL2, which is necessary for CenturyLink's higher-speed DSL tiers (up to 100 Mbps). Actiontec C3000A