Cost / License
- Free
- Proprietary
Platforms
- Online

Domain Checker is described as 'Obtain domain name status information with this effective and intuitive application that allows you to batch process multiple entries. Domain Checker is a simple, but powerful whois lookup tool for users that require a domain availability analyzer' and is an app. There are more than 10 alternatives to Domain Checker for Web-based, Windows, Self-Hosted and SaaS. The best Domain Checker alternative is ip.me, which is free. Other great apps like Domain Checker are JsonWhois.io, WhoisAPI, Active Whois Browser and Whoisology.

JsonWhois is the leading cloud hosted Whois API. The service serves WHOIS records for domains and IP addresses through a fully RESTful API. Additionally, the service offers IP geolocation and URL to screenshot services. Free usage per month!.


WhoisAPI is the premier provider of freshly parsed whois data for domain names and IP addresses, also providing IP to geolocation, HTML to PDF, and domain availability RESTful HTTP APIs. Billing is performed on a pay as you go basis, free monthly use.




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.




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.

ICANN (Internet Corporation for Assigned Names and Numbers) WHOIS search lets you lookup any generic domain to find out the registered domain owner and related information.

Bulk Whois API is a provider of parsed WHOIS data in JSON with simple API, competitive pricing, and top notch support. We support all TLDs including new gTLDs as well as IP addresses. Spend no more than necessary to get WHOIS data for your business.

With WhoisXML API’s WHOIS Database Download, cybersecurity specialists get well-parsed WHOIS data in real-time for their investigations.

Bulk WHOIS and Domain Names API on steroids, Parsed and in JSON, Domain Availability Check, Domain and WHOIS Lookup
With Whoisology WHOIS Database Download, marketing professionals can come up with better domain branding strategies while protecting their brands and trademarks.