Check whether an IP(v4 or v6) is in an CIDR range

This is a simple module to validate IP address, check ip address version, check if ip is within a range.

Check if a string is an IP address

A library for parsing IPv4 and IPv6 IP addresses in node and the browser.

Fill in a range of numbers or letters, optionally passing an increment or `step` to use, or create a regex-compatible range with `options.toRegex`

Code that will validate an IP address for correct format and give additional information about the type of IP address.

Utilities for IPv4/IPv6 ranges/subnets/masks parsing/matching, string representations, ...

A library for converting IP range to CIDRs or CIDR to IP range.

Check if a string is an IP address in CIDR notation

Range header field string parser

Get your public IP address — very fast!

Module for working with CIDR (v4, v6)

TypeScript definitions for cidr-matcher

Pass two numbers, get a regex-compatible source string for matching ranges. Validated against more than 2.78 million test assertions.

Get your internal IP address

Check if a string is an IP address

Utility for normalizing a numeric range, with a wrapping function useful for polar coordinates

Regular expression for matching IP addresses (IPv4 & IPv6)

Simple utility to convert either CIDR notation or two IP addresses to an array of the range of IP addresses

A light weight native JavaScript implementation of GeoIP API from MaxMind