What is the default password for Comcast / Xfinity routers?

Comcast / Xfinity routers have no universal default password. All 1 Comcast / Xfinity models we track either make you set a password during first setup, print a password unique to your unit on the device label, or are managed only from the app — so there is no shared password to look up. Open your exact model below for its cited login.

Which Comcast / Xfinity routers still ship a default password?

None of the 1 Comcast / Xfinity models we track ship a universal default password — each one either forces a password at setup, prints a unique password on the device label, or is app-managed only.

Comcast / Xfinity router default passwords & logins

None of the 1 Comcast / Xfinity models we track ship a universal default password. Every default below is cited to Comcast / Xfinity's own documentation.

Xfinity Advanced Gateway XB10

FAQ

What is the default password for Comcast / Xfinity routers?: Comcast / Xfinity routers have no universal default password. All 1 Comcast / Xfinity models we track either make you set a password during first setup, print a password unique to your unit on the device label, or are managed only from the app — so there is no shared password to look up. Open your exact model below for its cited login.
Which Comcast / Xfinity routers still ship a default password?: None of the 1 Comcast / Xfinity models we track ship a universal default password — each one either forces a password at setup, prints a unique password on the device label, or is app-managed only.

Comcast / Xfinity credential history (1)

Every addition, credential change, or removal we've recorded for Comcast / Xfinitymodels, oldest first — the record IEEE-style public registries don't keep for router manufacturers.

2026-08-17 Added to the directory — Comcast / Xfinity Xfinity Advanced Gateway XB10 (app-only)

Full compliance index →All brands →