https://www.whoxy.com/
WHOIS API | WHOIS Lookup API | Domain WHOIS API
WHOIS API lets you quickly lookup a domain name's WHOIS data. You get fully parsed WHOIS fields in XML or JSON format at just $2 per 1000 domains!
whois apilookup domain
https://hexillion.com/
Hexillion: Whois API and Internet tools for cybersecurity investigations, troubleshooting,...
whois apiinternet toolscybersecurityinvestigationstroubleshooting
https://whoapi.com/
Whois API and Domain Availability API - developed by WhoAPI Inc.
Mar 12, 2026 - WhoAPI Inc. is a software company that has been developing APIs since 2011. Whois API, Domain Availability API, Blacklist API and others.
whois apidomain availabilitydeveloped byinc
https://www.autowhois.com/
WHOIS API in JSON format for $1.00 and 99.9% Success Rate
With support for 1596 TLDs and 99.9% success rate, our WHOIS API can fetch parsed WHOIS in JSON and XML format for any domain name on the Internet.
whois apijson formatsuccess rate
https://whois.whoisxmlapi.com/
WHOIS API | 374M+ active domains & 7,596 TLDs tracked | WhoisXML API
whois apiactivedomainstldstracked
https://networksdb.io/
NetworksDB IP Intelligence, Company to IP, IP address owners, Reverse Whois + DNS, free tools & API
Apr 8, 2026 - The free tools below allow to find IP addresses and domains owned by companies and organisations. Mass reverse DNS, reverse Whois, lists of registered domains.
reverse whoisfree toolsipintelligencecompany
https://reverse-whois.whoisxmlapi.com/
Reverse WHOIS tools to find domains by registrant data | WhoisXML API
Our reverse WHOIS service line includes a lookup tool, an API, and a web-based search dashboard to find connected domains given registrant details.
reverse whoiswhoisxml apitoolsfinddomains
https://www.whoisxmlapi.com/
WhoisXML API: #1 for Domain, WHOIS, IP, DNS & Threat Intelligence
whoisxml apithreat intelligencedomainipdns
https://main.whoisxmlapi.com/
WhoisXML API: #1 for Domain, WHOIS, IP, DNS & Threat Intelligence | WhoisXML API
whoisxml apithreat intelligencedomainipdns
https://whois-history.whoisxmlapi.com/database
WHOIS History Database | See past domain owners | WhoisXML API
Use our domain history database to dig into 25.5B+ historical WHOIS records to strengthen security platforms, deepen cybercrime investigations, and more.
whois historywhoisxml apidatabaseseepast
https://whois-history.whoisxmlapi.com/
WHOIS History | Check domain history ownership | WhoisXML API
Get access to 25.5B+ historical WHOIS records via API calls, lookup tools, and database download. 10+ years tracking across 7,596 TLDs. Learn more.
whois historycheck domainwhoisxml apiownership