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tm_cidrcontains Function ​

The tm_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 ​

sh
tm_cidrcontains("192.168.2.0/20", "192.168.2.1")
true

tm_cidrcontains("192.168.2.0/20", "192.168.2.0/22")
true

tm_cidrcontains("192.168.2.0/20", "192.126.2.1")
false

tm_cidrcontains("192.168.2.0/20", "192.126.2.0/18")
false

tm_cidrcontains("fe80::/48", "fe80::1")
true

tm_cidrcontains("fe80::/48", "fe81::1")
false
  • tm_cidrhost calculates a full host IP address within a given IP network address prefix.
  • tm_cidrsubnet calculates a subnet address under a given network address prefix.
  • tm_cidrsubnets calculates a sequence of consecutive IP address ranges within a particular CIDR prefix.
  • `tm_cidrnetmask converts an IPv4 address prefix given in CIDR notation into a subnet mask address.