IPv4 Range Calculator

NetworkCalculator.ca

CIDR calculator  Who else uses this IP calculator?

Fill in the IP address range
1234
From
To

   

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Fill in the IP address range
From  e.g. 10.0.0.0  e.g. 10.0
To e.g. 10.0.1.255  e.g. 10.15

   

Fill in the IP range or block and the calculator will display the network IP in CIDR notation, usable IPs, IP broadcast address, network mask, and wildcard mask.

  • All IP address parts must contain an integer not greater than 255
  • Total address To must be greater than total address From
  • Blank field = 0

You cannot create a subnet from just any IP address ranges. There are networking specifications to respect. The calculator displays the resulting IP addresses aligned to boundries corresponding to these specifications (if you do not enter them correctly).

The smallest possible subnet is 4 IPs: a network number, 2 usable IPs, and an IP broadcast address.

Private IPv4 addresses as per RFC 1918

10.0.0.0    - 10.255.255.255
172.16.0.0  - 172.31.255.255
192.168.0.0 - 192.168.255.255

Automatic Private IP addresses reserved by IANA.

169.254.0.0 - 169.254.255.255