Whoisology - Connected database of whois records and whois history
Mrdomain - Mrdomain is one of the leading hosting sites that provides you an opportunity to create your own website or online store in no time and without any hidden cost.
WhoisThisDomain - Domain name lookup tool that allows you to get information about domain registration from WHOIS server.
Combell - Combell offers professional web hosting, cloud hosting and servers for Linux and Windows.
JSON WHOIS API - Parsed domain WHOIS data from any WHOIS server via RESTful API with metered pay as you pricing.
Europe Registry - Europe Registry is an all-in-one website that lets you register a wide range of European domain names by providing complete coverage of European ccTLD domain names, including .eu, .de, .nl, .be, .es, .UK, and many others.