Xfinity (Comcast) Router Login

Updated

Xfinity gateways use 10.0.0.1. Current XB7 and XB8 gateways use the username admin and a unique password printed on the label, and the web Admin Tool may first need to be turned on in the Xfinity app. The newest gateways have no web admin at all. Only old gateways used admin / password.

Contents
  1. How to log in to the Xfinity (Comcast) router
  2. Xfinity (Comcast) default username and password
  3. Change the Xfinity (Comcast) Wi-Fi password
  4. 10.0.0.1 not opening? Fixes that work
  5. Xfinity (Comcast) router models
  6. Router brands used by Xfinity (Comcast)
  7. Still need help?
  8. Frequently asked questions
  9. Other providers in United States

How to log in to the Xfinity (Comcast) router

  1. Connect to your Xfinity (Comcast) Wi-Fi (or plug in a LAN cable).
  2. Open a browser and go to 10.0.0.1 or Xfinity app or 10.0.0.1.
  3. Enter the username and password below. If they fail, use the ones on the router label.
  4. Open the Wi-Fi / WLAN menu to change your network name and password.

Xfinity (Comcast) default username and password

Router / ISPLogin addressUsernamePasswordSource
xFi Gateway XB7 / XB810.0.0.1adminPrinted on the labelOfficial doc
Newest gateways (e.g. XB10)Xfinity app—No web login — use the Xfinity appOfficial doc
Older gateways (e.g. XB3)10.0.0.1adminpassword

“Official doc” rows link to the manufacturer’s or ISP’s own documentation, via the ssid.ai router dataset (CC BY 4.0).

Credentials vary by model and installation date. The sticker on your router always wins.

Change the Xfinity (Comcast) Wi-Fi password

After logging in: Gateway → Connection → Wi-Fi → Edit → Save. The Xfinity app does the same.

Use at least 12 characters. Every device will need the new password to reconnect.

10.0.0.1 not opening? Fixes that work

  • Connect to the router first. Use its Wi-Fi or a LAN cable — mobile data will never reach 10.0.0.1.
  • Type it in the address bar, not the search box, and include http:// — http://10.0.0.1. Many routers have no HTTPS page.
  • Check for typos: only numbers and dots. The letter “l” or “o” in place of 1 or 0 will not work.
  • Your router may use a different address. Check the default gateway (see above) or the label.
  • Turn off VPN, proxy or “Private Relay”. They send traffic outside your home network.
  • Try another browser or a private window, and clear the cache.
  • Restart the router: unplug it for 30 seconds, then wait two minutes after plugging it back in.
  • Still stuck? A factory reset restores the default address and password.

Xfinity (Comcast) router models

ModelLogin addressUsernamePasswordSource
Xfinity Advanced Gateway XB10App only—App only (no web login)Official doc
xFi Gateway XB7 (CGM4331COM)10.0.0.1adminOn the label (unique)Official doc
xFi Gateway XB8 (CGM4981COM)10.0.0.1adminOn the label (unique)Official doc

Router brands used by Xfinity (Comcast)

Still need help?

If the login page will not open or the password is refused, contact Xfinity (Comcast) support: Xfinity app. A factory reset also works, but on ISP routers it can remove your internet settings — ask your provider first.

Frequently asked questions

What is the Xfinity (Comcast) router IP address?

Xfinity (Comcast) routers use 10.0.0.1.

What is the default Xfinity (Comcast) router password?

xFi Gateway XB7 / XB8: admin / Printed on the label. If it does not work, check the router label.

How do I change my Xfinity (Comcast) Wi-Fi password?

Gateway → Connection → Wi-Fi → Edit → Save. The Xfinity app does the same.

Other providers in United States