Check the device label
- Username
- admin
- Password / access
- Password on the device label
Access: Web
xFi Gateway XB7 (CGM4331COM), xFi Gateway XB8 (CGM4981COM)
Source (opens in a new tab)ROUTER & MODEM REFERENCE
Xfinity router & modem login
Login addresses, default credentials, and setup instructions for Xfinity equipment.
Connect to the router’s Wi-Fi or Ethernet first. These links open a new tab on your device; the address may differ if the network was reconfigured.
QUICK START
Most likely login options
Start with the option that matches your model. Defaults apply to the factory state; use the password you chose if the device has already been set up.
Options are ordered by manufacturer documentation and coverage among the listed models. Hardware, firmware, and ISP versions can differ.
MODEL DETAILS
Login addresses & credentials
Passwords are case-sensitive. “Leave blank” means an empty field; “Not specified” means the source does not provide that detail. Entries without a model are brand-level references.
| Model / device | Login address | Username | Password / access | Notes & source |
|---|---|---|---|---|
| Xfinity–Router · Not specified | – | cusadmin | CantTouchThis | Model not specified by this list. |
| Xfinity–Router · Not specified | – | cusadmin | highspeed | Model not specified by this list. |
| Xfinity–Router · Not specified | – | comcast | Leave blank | Model not specified by this list. |
| XfinityxFi Gateway XB7 (CGM4331COM)Modem / gateway · Web | http://10.0.0.1 (opens in a new tab) | admin | Password on the device label | Listed as Xfinity (Comcast). There is no universal admin/password on current XB7 firmware. Username is 'admin' but the default password is the unique code printed on the device label, and newer builds also require you to switch on Admin Tool access from the Xfinity app before 10.0.0.1 will load. Recovery & reset instructionsLog in to the Admin Tool by opening a browser to http://10.0.0.1 and signing in with username 'admin'. On XB7 firmware you may first need to enable web access: open the Xfinity app > WiFi > View WiFi equipment > Advanced Settings > Admin Tool online access > turn ON. The initial Admin Tool password is the unique value printed on the sticker on the side/bottom of the gateway (it is NOT 'password' on current firmware). To factory reset, press and hold the recessed Reset pinhole on the back for ~30 seconds until the gateway reboots, then log in with the sticker credentials. |
| XfinityxFi Gateway XB8 (CGM4981COM)Modem / gateway · Web | http://10.0.0.1 (opens in a new tab) | admin | Password on the device label | Listed as Xfinity (Comcast). No admin/admin or admin/password default on the XB8. The label carries a unique admin password, and web admin access often has to be toggled on from the Xfinity app first because WiFi Intelligence locks the local tool. Recovery & reset instructionsBrowse to http://10.0.0.1 and sign in with username 'admin'. If the page won't load, enable it first in the Xfinity app: WiFi > View WiFi equipment > Advanced Settings > Admin Tool online access > ON. The default Admin Tool password is the unique string on the label on the bottom of the XB8 (not 'password'). Factory reset: hold the recessed Reset pinhole on the rear ~30 seconds until it reboots; log back in with the label credentials. |
| XfinityXfinity Advanced Gateway XB10Modem / gateway · App | App / account access | Not specified | Vendor app or account | Listed as Comcast / Xfinity. XB10 is Xfinity's current DOCSIS 4.0 / Wi-Fi 7 flagship gateway for X-Class tiers (X-500+), confirmed as a real, current product via direct search of xfinity.com/community.xfinity.com. Like all XB6-and-higher gateways, it has no accessible browser Admin Tool. Recovery & reset instructionsWiFi network name/password can only be changed in the Xfinity app; a physical factory reset (recessed button) restores factory defaults, then the gateway must be reactivated via the Xfinity app. |
No records match these filters. Try another model or clear the filters.
Related login addresses
GET CONNECTED
How to reach your router
- Connect your computer or phone to the router’s Wi-Fi or an Ethernet port.
- Open a documented login address. If it does not load, look for the Router or Default gateway address in your device’s network settings.
- Match your model and hardware revision to the table. Use the device label or your setup password when the model has no shared default.
Admin password or Wi-Fi password?
The admin password opens the router’s settings. The Wi-Fi password connects a device to the wireless network. They may be different, and an ISP or cloud account can be separate again.
If the password does not work
Check capitalization and the device label, then use the manufacturer’s password-recovery instructions. A factory reset erases settings and may require ISP setup details; follow the instructions for your exact model.
Find your model’s manual →Sources & data
Router default-credential data from ssid.ai (Drumworks Ventures FZ), licensed CC BY 4.0. Adapted, organized and supplemented by Manuals+. The data is provided as is; manufacturers and ISPs can change defaults.
Additional factual entries: Austin Songer’s credential list and Clint Milner’s credential list. Each table entry links to its supporting source. Updated 2026-10-16.