= WhoisXMLAPI
https://dns-history.whoisxmlapi.com/api
They do have <historic reverse IP search> at https://dns-history.whoisxmlapi.com/api but their data is not obviously more complete than <viewdns.info>, e.g.: as of March 2025:
* 62.22.60.56
* https://viewdns.info/reverseip/?t=1&host=62.22.60.56 has traveltimenews.com from 2011
* https://dns-history.whoisxmlapi.com/api is empty
* 66.175.106.158
* https://viewdns.info/reverseip/?host=66.175.106.158&t=1 has a hit from 2011
* https://dns-history.whoisxmlapi.com/api is empty
Their whois data seems much better quality however.
As of 2025, you can do historical whois for free on the API demo under https://whois-history.whoisxmlapi.com/ but it only shows the 3 newest records.
To unlock that, you have to create an account, which gives you 500 credits, and then:
* https://tools.whoisxmlapi.com/whois-history-search[]: each full historical whois report for a domain costs 50 points
* https://tools.whoisxmlapi.com/reverse-whois-search[]: each historical reverse whois search search costs 1 point
They do normalize <Gmail dot trick>, but not for the `googlemail` trick.
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