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: 87.128.16.2/31
Addresses: 2 (2¹)
First IP: 87.128.16.2 (2.16.128.87.in-addr.arpa)
Last IP: 87.128.16.3 (3.16.128.87.in-addr.arpa)

/8 Operated By: RIPE NCC

Related Networks

87.0.0.0/8
86.0.0.0/8
88.0.0.0/8
87.128.16.0/30
87.128.16.2/32
87.128.16.3/32

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