Support XFINITY Internet Faster Internet Speeds and Old Modems


If you’re accessing XFINITY Internet with an old modem, you’re not taking advantage of our new speed plans. Consider upgrading your modem.

Upgrade your modem

If you want to enjoy our fastest Internet speeds, including Blast! and Extreme 105 service, then a DOCSIS 3.0 modem is required. You can lease a DOCSIS 3.0 modem from us, buy an approved modem at a retail outlet near you, or check to see if your existing modem is approved on our DOCSIS Devices list.

If you lease a modem through Comcast and have been notified that you are eligible for a modem upgrade, please visit

Be sure to check out which products and packages are available in your area.

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