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Subnet Calculator

Plan IP address spaces and subnets — Azure-ready.

Address Space (CIDR Notation)

Quick:

Address Space Summary

Network Address—

Subnet Mask—

Wildcard Mask—

CIDR Prefix—

Gateway—

First Usable IP—

Last Usable IP—

Broadcast—

Total IPs—

Cloud-Usable IPs—

IP Class—

Binary Network—

ℹ️

32-bit Address Map

Network bits

Subnet bits

Host bits

Subnet Splitter

Split into subnets of each

#	Network	Gateway	First Usable	Last Usable	Broadcast