10.1.1.1 - Default IP Address for Router Administration

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10.1.1.1 is the default IP address for certain home broadband routers including some older Belkin and D-Link models.It is a private IP address that can be also assigned to any device on local networks configured to use this address range.

Using 10.1.1.1 to Connect to a Router

When a router is using address 10.1.1.1 on the local network, access its console by pointing a Web browser to

http://10.1.1.1/

The browser will prompt for this router's administrator login credentials (username and password). For more, see - How to Access Your Router at Home.

Even routers that use a different default local IP address can be changed to use 10.1.1.1 as their default. Administrators may choose 10.1.1.1 if they find it easier to remember than alternatives. However, on home networks, other addresses have proven much more popular including 192.168.0.1 and 192.168.1.1.

This address must not be confused with a router's public IP address.

Using 10.1.1.1 on Client Devices

Any computer can use 10.1.1.1 if the local network supports addresses in this range. For example, a subnet with starting address 10.1.1.0 would naturally assign addresses in the range 10.1.1.1 - 10.1.1.254. 

Use the ping utility to determine whether any device on the local network is actively using 10.1.1.1. A router's console also displays the list of addresses it has assigned (some of which may belong to devices currently offline).

10.1.1.1 is a private IPv4 network address meaning that it cannot receive direct connections from outside the home network. Client do not get better performance or improved security by using this address and range compared to any other private address.

Issues with 10.1.1.1

Networks having IP addresses starting with 10 are much more commonly found in larger businesses than in homes for historical reasons, partly because that private range supports many thousands of addresses).

Business networks normally start their addressing from 10.0.0.1, the very first number in this range. Users can easily mistype or confuse the three addresses 10.0.0.1, 10.0.1.1, and 10.1.1.1.

To avoid IP address conflicts, this address must be assigned to only one device per private network. 10.1.1.1 should not be assigned to a client if it is already assigned to the router. Similarly, administrators must not assign it as a static IP address when the address is within the router's DHCP address range.