vasco-santosis-loopback-addr
Check if a IP address is a loopback address
Various Internet Engineering Task Force (IETF) standards reserve the IPv4 address block 127.0.0.0/8 and the IPv6 address ::1/128 for this purpose. The most common IPv4 address used is 127.0.0.1. Commonly these loopback addresses are mapped to the hostnames, localhost or loopback. For more information check rfc5735 and rfc3513.
Install
npm i is-loopback-addr
Usage
import { isLoopbackAddr } from 'is-loopback-addr'
console.log(isLoopbackAddr('127.0.0.1')) // true
console.log(isLoopbackAddr('192.168.0.1')) // false
console.log(isLoopbackAddr('22.2.0.1')) // false
console.log(isLoopbackAddr('::1')) // true
console.log(isLoopbackAddr('2001:8a0:7ac5:4201:3ac9:86ff:fe31:7095')) // false
Contribute
Feel free to dive in! Open an issue or submit PRs.
License
MIT © Vasco Santos