Free Whois Lookup - Whois IP Search & Whois Domain Lookup

Whois Footprinting for beginners - Hackercool Magazine

Find Out More about an IP Address via WHOIS Lookup and WHOIS API

Whois IP Lookup & Whois Domain Lookup Free Domain Tools

How to use IP address with whois, after digging it using shell_exec PHP? - Stack Overflow

IP whois API - IP lookup announcement - WhoAPI Inc.

How to Find The Location Of Your Servers with Traceroute and WHOIS

Quick Ways to Find the Owner of IP Address

New release of IP2Location.io IP Geolocation Go SDK - query for an enriched data set based on IP address and provides WHOIS lookup API : r/golang

Online Whois Lookup of IP address and Domains

The results of a Whois lookup on the IP address of the Web servers