Regular expression for matching IP addresses in CIDR notation

$ npm i cidr-regex

import cidrRegex from "cidr-regex";

// Contains a CIDR IP address?
cidrRegex().test("foo 192.168.0.1/24");
//=> true

// Is a CIDR IP address?
cidrRegex({exact: true}).test("foo 192.168.0.1/24");
//=> false

cidrRegex.v6({exact: true}).test("1:2:3:4:5:6:7:8/64");
//=> true

// Extract CIDRs from string
"foo 192.168.0.1/24 bar 1:2:3:4:5:6:7:8/64 baz".match(cidrRegex());
//=> ["192.168.0.1/24", "1:2:3:4:5:6:7:8/64"]

Returns a regex for matching both IPv4 and IPv6 CIDR IP addresses.

Returns a regex for matching IPv4 CIDR IP addresses.

Returns a regex for matching IPv6 CIDR IP addresses.

Type: boolean
Default: false (Matches any CIDR IP address in a string)

Only match an exact string. Useful with RegExp#test() to check if a string is a CIDR IP address.

• ip-bigint - Convert IPv4 and IPv6 addresses to native BigInt and vice-versa
• ip-regex - Regular expression for matching IP addresses
• is-cidr - Check if a string is an IP address in CIDR notation
• is-ip - Check if a string is an IP address
• cidr-tools - Tools to work with IPv4 and IPv6 CIDR network lists

© silverwind, distributed under BSD licence

Based on previous work by Felipe Apostol