* [Robtex](https://www.robtex.com) - is an ip and domain name based researching websites that gives multiple servivessusch as Reverse DNS Lookup, Whois, and AS Macros.
719
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* [Robtex](https://www.robtex.com) - is an IPaddress and domain name based researching websites that offers multiple servicessuch as Reverse DNS Lookup, Whois, and AS Macros.
720
720
* [SameID](http://sameid.net)
721
721
* [SecurityTrails](https://securitytrails.com/dns-trails) - API to search current and historical DNS records, current and historical WHOIS, technologies used by sites and whois search for phone, email, address, IPs etc.