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: 205.255.128.0/28
Addresses: 16 (2⁴)
First IP: 205.255.128.0 (0.128.255.205.in-addr.arpa)
Last IP: 205.255.128.15 (15.128.255.205.in-addr.arpa)

/8 Operated By: ARIN

Related Networks

205.0.0.0/8
204.0.0.0/8
206.0.0.0/8
205.255.128.0/27
205.255.128.0/32
205.255.128.15/32

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