IPv4 Subnet Calculator

This calculator and tool allows you to type an IP address in and get information on a particular subnet. Enter an IP or range in CIDR notation.

Network: 34.0.12.122/31
Addresses: 2 (2¹)
First IP: 34.0.12.122 (122.12.0.34.in-addr.arpa)
Last IP: 34.0.12.123 (123.12.0.34.in-addr.arpa)

/8 Operated By: ARIN

Related Networks

34.0.0.0/8
33.0.0.0/8
35.0.0.0/8
34.0.12.120/30
34.0.12.122/32
34.0.12.123/32

You can also use some of the other examples such as:

0.0.0.0/0
1.0.0.0/8
127.0.0.1
30.0.0.0/8
192.168.0.0/16