🧮 Subnet Calculator

Quickly calculate network, broadcast, wildcard mask, and usable hosts.

Calculator

IP Address: Subnet (CIDR):

Network Address:

Broadcast Address:

First Host:

Last Host:

Subnet Mask:

Wildcard Mask:

Total Hosts:

CIDR:

About IP Networks

Class A — 1.0.0.0 to 126.255.255.255 — /8 — ~16M hosts
Class B — 128.0.0.0 to 191.255.255.255 — /16 — ~65K hosts
Class C — 192.0.0.0 to 223.255.255.255 — /24 — 254 hosts
Class D — 224.0.0.0 to 239.255.255.255 — Multicast
Class E — 240.0.0.0 to 255.255.255.255 — Experimental

Private IP Ranges

10.0.0.0/8
172.16.0.0/12
192.168.0.0/16