- IP Address for Local Networks

Any device on a local network can use the IP address is a private IP address, meaning that it is used exclusively on private networks where it would be the IP address of either the router or one of the devices on the network. 

Router manufacturers assign their routers a default private IP address. The address is not a common router address, but a few broadband router models and access points use it (as well as other devices), including some Netgear models and some printers by SerComm and USRobotics, among others.

How Private IP Addresses Work

Illustration of how private IP addresses work
 Miguel Co / Lifewire

Private network IP addresses cannot be accessed from the internet directly, but can be used to allow any device on a local network can connect to any other device also on that network.

The Internet Assigned Numbers Authority (IANA) manages IP addresses and has reserved certain number blocks to be private. These are:

Private IP addresses cannot be used by any website or device on the wider internet or other local networks. For example, a ping to a private address will work if generated by another device within the local network, but will not work if attempted from outside the network.

For this reason, private IP addresses do not need to be unique except within their own local network. 

There is nothing special about any particular private IP address. A device on a local network does not gain improved performance or better security from having as its address compared to any other private address.

Configure in the Router Administrative Console

Private IP addresses are managed through the router's administrative console. Configure your router or another device, including changing its default IP address or assigning a specific address to a device on your network, by entering its IP address into a browser's URL address bar. A common router IP address is, although your router's vendor specifies the console's address.

Routers ship with default username-password credentials. Usernames are usually admin or user while passwords might also be admin, user or also 1234. Some manufacturers' devices ship with no default usernames or passwords, so you can access their console simply by clicking through the login dialog.

If You Don't Already Know

Always set a username and strong password in your router's admin console to prevent someone on your local network from changing settings.

Finding Your Device's IP Address

Your device's IP address is usually printed on the box or on the bottom of the device. If you can't find it, you can access it from your computer.

Router Default IPs:

To find your router's default IP address, use Window's ipconfig utility:

  1. Select the Search field to the right of the Start Menu.

  2. Enter command prompt then select Command Prompt to launch the utility.

    Screenshot of Command Prompt and cmd search term on Windows 10
  3. Enter ipconfig to display a list of all your computer's connections.

    Screenshot of command prompt app on Windows 10 showing ipconfig command
  4. Your router's IP address is listed under the section Local Area Connection and is identified as the Default Gateway.

    Default Gateway result of ipconfig command in command prompt window on Windows 10

Automatic Address Assignment of

A common use of the address is a router automatically assigning it to a device on its network. For example, administrators sometimes configure routers that have as their default address to use as the starting address of their DHCP range. This setting enables the first device on the network to get an address that ends in an easier-to-remember round number (100) rather than the next address in the sequence (2). Alternatively, administrators sometimes configure the router's client IP range as to, leaving available for static IP address assignment.

Avoiding IP Address Conflicts

Avoid manually assigning this address or any address that belongs to a router's DHCP address range. Otherwise, IP address conflicts may result as the router may assign an address that is already being used. Check the router's console settings to determine the DHCP pool it has defined. Routers define this range using a combination of several settings including:

  • Network mask: the router's subnet defines the minimum and maximum private IP address allowed.
  • Start address: the beginning number of the range (used to further limit within the subnet).
  • Maximum number of clients: an additional limit some routers enforce in addition to the mask.