192.168.100.1 - Home Network Default IP Address

Easily Change Your IP Local Address for LAN Routers

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192.168.100.1 is an IP address set as the default local address for a few models of home broadband routers. It is a private IP address that can be assigned to any device on a local network configured to use this address range.

Using 192.168.100.1 to Connect to a Router

Administrators can log into the console of a router set for 192.168.100.1 by pointing a Web browser to

http://192.168.100.1/

This triggers the browser to prompt for the router's administrative login information (username and password).

For more, see - How to Access Your Router at Home.

Administrators can easily change a home router's addresses from some other default to 192.168.100.1 if they prefer to use this number. Some people do that as they find it easier to remember than some other numbers but otherwise it provides no particular benefit over other address choices.

Using 192.168.100.1 for Local Clients

An administrator can choose to assign 192.168.100.1 to a different device on the local network other than the router. Assignment can be done either dynamically (via DHCP) or manually. 

To use DHCP, the router's configuration must be set to include 192.168.100.1 in the range (pool) of addresses it allocates. If a router starts its DHCP range at 192.168.1.1, tens of thousands of addresses exist in the range with lower numbers, making it highly unlikely that 192.168.100.1 ever gets used.  Administrators more commonly assign 192.168.100.1 to be the first address in the DHCP range instead.

With manual addressing, called static IP address assignment, the router's network mask must be set correctly in order to use this address. For more, see An Explanation of Subnet Masks.

How 192.168.100.1 Works

192.168.100.1 is a private IPv4 network address, meaning that you cannot connect to a router from outside the home network using this address.

It is for use by administrators within the local area network (LAN) only.

Routers or clients do not experience any difference in network performance or security from having this address compared to any other private network address.

Issues with 192.168.100.1

This address and 192.168.1.100 are easily confused with each other. Home networks use 192.168.1.x addressing much more often and 192.168.100.x relatively rarely.

Only one device should be assigned 192.168.100.1. Administrators should avoid manually assigning this address to any device when it belongs to a router's DHCP address range. Otherwise, IP address conflicts can result as the router can assign this address to a different device than the one already using it.