IP range calculator

Last update: 2026-07-28

Use CIDR notation, such as 2001:db8::/64, or a dotted IPv4 netmask.

Network address
192.168.1.0
Address type
Unicast
Address scope
Private
First address
192.168.1.0
Last address
192.168.1.255
Mask
255.255.255.0
Wildcard mask
0.0.0.255
Broadcast address
192.168.1.255
Addresses in range
256

Enter an IPv4 or IPv6 address with a CIDR prefix. IPv4 also accepts a dotted netmask, for example 192.168.1.10 255.255.255.0.

The first and last addresses include the network and broadcast addresses. IPv6 does not use broadcast addresses, so the calculator shows its inclusive range instead.