netmask
Parse and lookup IP network blocks
ipterate
A small utility library to allow you to iterate through all IPs within a given subnet. Remains efficient no matter how many IPs there are in the range.
neoip
IP address utilities for node.js, forked from `indutny/node-ip`.
ip-toolkit
A utility library for manipulating IPv4 and IPv6 address in Node.js.
ip-sub
A set of utilities for IP/prefix validation and subnet matching.