Subnet calculator
Type a CIDR like 192.168.1.0/24 and get every number you need.
InstantPlain English + technicalFree, no sign-up
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About the Subnet / CIDR calculator
Calculate a subnet from CIDR: network address, broadcast, first and last host, netmask, wildcard and number of hosts. IPv4 and IPv6.
Every result comes in two styles: plain English for everyone, and the exact technical detail for engineers, with the raw JSON one click away.