
WhoisXML API
WhoisAPI
zonefiles.io
Domainr
JsonWhois.io
IP Ninja
Dymo
Primitive
SecurityTrails
DomainTools
IP Ninja
SentryScore
DomainOps
UptimeRobot
WHOIS JSON API
Detectify
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Based on our record, SecurityTrails seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I'm having the same issue. https://securitytrails.com/ also had my "secret" staging subdomain. I made a catch-all certificate, so the subdomain didn't show up in CT logs. It's still a secret to me how my subdomain ended up in their database. - Source: Hacker News / over 1 year ago
WhoisAPI - WhoisAPI is the premier provider of freshly parsed whois data for domain names and IP addresses...
DomainTools - Domain name research, including comprehensive Whois Lookup, Reverse Whois Lookup and Whois History.
zonefiles.io - List of registered domain names updated daily
IP Ninja - Advanced Network Intelligence API featuring enriched Reverse IP lookups, historical hostname mapping, and fully parsed WHOIS data for IPs and domains. Built for security researchers and developers seeking structured, actionable network insights.
Domainr - Domainr is the only ICANN-accredited domain status API provider.
SentryScore - Find out how secure your business domain really is. Free instant scan โ SSL, email protection, breach history, security headers. Get your score in 60 seconds.