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cidrcontains Function

cidrcontains determines whether a given IP address or an address prefix given in CIDR notation is within a given IP network address prefix.

Note that both arguments must belong to the same address family, either IPv4 or IPv6. A family mismatch will result in an error.

Examples​

Code Block
> cidrcontains("192.168.2.0/20", "192.168.2.1")
true
> cidrcontains("192.168.2.0/20", "192.168.2.0/22")
true
> cidrcontains("192.168.2.0/20", "192.126.2.1")
false
> cidrcontains("192.168.2.0/20", "192.126.2.0/18")
false
> cidrcontains("fe80::/48", "fe80::1")
true
> cidrcontains("fe80::/48", "fe81::1")
false