This is a route summurization calculator. Please enter some route values seperated by spaces (such as 1.2.3.4 1.2.3.5), or if it is a range enter between "-" (such as 172.16.128.0-172.16.159.255).

Enter network addresses to be summarized:

 

Route summarization

Subnet

 

 

The following are a few examples you can try to verify the page (use Try me! to show the example and Link to show an external verification of the example):

Test

Range

Summarization

Verfication link

1

172.16.128.0-172.16.159.255

172.16.128.0 255.255.224.0 Try Now!

 

2

100.16.0.0 100.17.0.0 100.18.0.0 100.19.0.0

should give: 100.16.0.0 255.252.0.0 Try Now

[Link]

3

151.100.1.0 151.100.2.0 151.100.3.0 151.100.4.0 151.100.5.0 151.100.6.0 151.100.7.0

171.100.0.0/21 (171.100.0.0 255.255.248.0) Try Now!

[Link]

4

172.16.0.0-172.31.255.255

should give 172.16.0.0/12 Try Now!

[Link]

An example is: