get-fqdn
Lookup the fully qualified domain name ("FQDN") of the current server's IP (default) or a custom IP. 90x faster than `hostname -f` and works with Node v6.4+.
dns-lookup-sync
Synchronous version of dnsPromises.lookup - Resolves a host name (e.g. 'nodejs.org') into the first found A (IPv4) or AAAA (IPv6) record
punycode
A robust Punycode converter that fully complies to RFC 3492 and RFC 5891, and works on nearly all JavaScript platforms.
domain-browser
Node's domain module for the web browser. This is merely an evented try...catch with the same API as node, nothing more.