ICANN WHOIS!

Whoisology is a searchable domain name reverse whois / ownership database with over one billion individual domain name records that are updated pretty regularly.

Whois domain information such as registrar, domain status, expiration date, and name servers.

Domain name lookup tool that allows you to get information about domain registration from WHOIS server.

SmartWhois is a useful network information utility that allows you to look up all the available information about an IP address, hostname or domain, including country, state or province, city, name of the network provider, administrator and technical support contact information.

With over 1.5K new gTLDs created so far and more on the horizon the days of everyone rolling their own WHOIS data parser are over. However you have nothing to fear, JsonWHOISAPI frees you from the countless hours it takes to build and maintain separate parser for all these gTLDs while giving every user 1000 FREE requests each and every month! We like being fair, so only pay for what you use with our PAYG pricing model.

An API that gathers social and whois data about a domain. It can also take a screenshot of the domain and logs historical screenshots. We provide a fast and reliable screenshot service. The api refreshes each image every month, but also logs all old screenshots allowing you to gather an index of historical appearance. For the best practices please check out our docs.

A JSON API for getting domain whois data and taking website screenshots.

Bulk Whois API is a provider of parsed WHOIS data in JSON with simple API, competitive pricing, top notch support, and more. Pay no more than necessary for WHOIS data that your business needs.

Active Whois Browser is useful network information utility what allow finding information about owners of internet domains and IP adresses. Lookup country, persons and postal adresses of who use domain or IP address.

DomainHostingView is a utility for Windows that collects extensive information about a domain by using a series of DNS and WHOIS queries, and generates HTML report that can be displayed in any Web browser. The information displayed by the report of DomainHostingView includes: the hosting company or data center that hosts the Web server, mail server, and domain name server (DNS) of the specified domain, the created/changed/expire date of the domain, domain owner, domain registrar that registered the domain, list of all DNS records, and more... »

A simple, reliable, and fast lookup, of the whois database systems, for Internet domains.Also has a lookup pulling all DNS records for fully qualified domain names.

Check the whois record of any domain name to find domain names available to register cheap. A domain name whois & availability checker to help you succeed.

Comprehensive API that delivers parsed Whois results, domain availability information, website screenshots, PageRank, Alexa rank, and other domain data.

With domain-check you can search in more than 1500 top-level domains (TLD) and second-level domains (SLD), if the domain is free or registered. When the domain name is registered, the domain-checker shows domain name information like ownership, administrative contact and currently used nameservers (DNS).You can also lookup multiple top level domains for your search term (multi domaincheck), search for information about top level-domains (top level-domain lookup), lookup ip addresses (IPv4 and IPv6) and you can inform about your currently used ip-address (ip address locator). »