cidr

Simplifies IPv4/IPv6 CIDR network prefix management with counting, overlap checking, explanation, and subdivision. More information: https://github.com/bschaatsbergen/cidr.

• Explain a CIDR range:

cidr explain {{10.0.0.0/16}}

• Check whether an address belongs to a CIDR range:

cidr contains {{10.0.0.0/16}} {{10.0.14.5}}

• Get a count of all addresses in a CIDR range:

cidr count {{10.0.0.0/16}}

• Check whether two CIDR ranges overlap:

cidr overlaps {{10.0.0.0/16}} {{10.0.14.0/22}}

• Divide a CIDR range into a specific number of networks:

cidr divide {{10.0.0.0/16}} {{9}}