10.0.0.0 is not a router login address and never will be. It is the network address of the 10.0.0.0/8 private range, the number that identifies the whole block rather than any device in it, and no router answers on it. People arrive here for two reasons: they typed 10.0.0.0.1, which has five numbers and is not a valid IP address at all, or they read 10.0.0.0/8 in a settings screen and assumed the .0 was the gateway. In almost every case the address you actually want is 10.0.0.1, the Xfinity and Comcast gateway.
Where the real gateway is
| Brand / model | Username | Password | Notes |
|---|---|---|---|
| Xfinity / Comcast | admin | password | Gateway is 10.0.0.1, not 10.0.0.0 |
| Arris / Technicolor (cable) | admin | password | Gateway is 10.0.0.1 |
| Telstra / TPG (Australia) | admin | Telstra or label | Gateway is 10.1.1.1 |
| Custom 10.x networks | varies | varies | Gateway is usually 10.0.0.1 or 10.0.0.254 |
What to do instead
Type 10.0.0.1 into your browser’s address bar, with four numbers and three dots. If you are on Xfinity or Comcast, that opens the gateway login; the default is admin / password and you will be asked to change it. If 10.0.0.1 also times out, read the Default Gateway from your device’s network settings, because your router may be on 192.168.0.1, 192.168.1.1 or 10.1.1.1 instead.
Network address, gateway and broadcast
Every IP subnet has three addresses with special jobs. The first, ending in .0 on a /24 network, is the network address and identifies the block as a whole in routing tables. The last, ending in .255, is the broadcast address that reaches every device at once. Everything between is usable by hosts, and by convention the router takes the first usable one. For the range 10.0.0.0/8, that means 10.0.0.0 is the network, 10.255.255.255 is the broadcast, and 10.0.0.1 is where Xfinity, Comcast and most other users of the range put the gateway.
A web browser cannot connect to a network address because nothing listens there. Typing 10.0.0.0 gives a timeout, and typing 10.0.0.0.1 gives a search results page or an invalid-address error, because five octets is not an IPv4 address.
Common mistypes of 10.0.0.0
None of these open anything. Each is a slip that sends people to a search page or a timeout instead of the admin panel.
Find your router’s real address
| Device | Where to look |
|---|---|
| Windows 10 / 11 | Command Prompt → ipconfig → Default Gateway |
| macOS | System Settings → Wi-Fi → Details → TCP/IP → Router |
| iPhone / iPad | Settings → Wi-Fi → (i) → Router |
| Android | Wi-Fi → network details → Gateway (varies by maker) |
| Linux | ip route | grep default |
Related addresses
Xfinity, Comcast, Arris
10.1.1.1Telstra, TPG, Optus (Australia)
10.1.10.1Some Comcast Business & custom LANs
192.168.0.1TP-Link, D-Link, Netgear, Tenda
192.168.1.1TP-Link, Netgear, Linksys, ASUS