isInNetEx function

Determines if an IP address is in a specific subnet.

Parameters

IPaddress

A string containing IPv6/IPv4 addresses.

IPprefix

A string containing colon delimited IP prefix with top n bits specified in the bit field (i.e. 3ffe:8311:ffff::/48 or 123.112.0.0/16).

Return value

TRUE if the host is in the same subnet; otherwise, FALSE.

Also returns FALSE if the prefix is not in the correct format or if addresses and prefixes of different types are used in the comparison (i.e. IPv4 prefix and an IPv6 address).

Examples

isInNetEx(host, "198.95.249.79/32");
    true if the IP address of host matches exactly 198.95.249.79

isInNetEx(host, "198.95.0.0/16");
    true if the IP address of the host matches 198.95.*.*

isInNetEx(host, "3ffe:8311:ffff::/48");
    true if the IP address of the host matches 3ffe:8311:fff:*:*:*:*:*

See also

IPv6-Aware Proxy Helper API Definitions

IPv6 Extensions to Navigator Auto-Config File Format