Martian CIDR

Check if an IP address is from reserved subnet.

Certain IP subnets are reserved for special-use by Internet Assigned Numbers Authority (IANA). A Martian packet is an IP packet which specifies a source or destination address from such subnet. If seen on the public internet, these packets cannot actually originate as claimed, or be delivered.

You can check if some packet is a Martian packet like that:

import isMartianIP from 'martian-cidr'
console.log(isMartianIP('10.0.0.1')) // true

ES modules only

Version 2.0.0 introduces a breaking change: the support for CommonJS is removed, minimal Node.js version becomes 14.

Install

npm install --save martian-cidr

Running tests

npm run test

Author

Tom Adler

License

MIT