Kit Rx: Domain registration facts (RDAP whois)
https://api.kit-rx.com/v1/domain/whoisOverview
Registration facts for a domain from its registry's RDAP server, located through the IANA bootstrap file: registrar name, IANA ID and abuse contact, created, updated and expiry dates, age and days to expiry, EPP status codes, transfer lock, nameservers, DNSSEC delegation flag, and the registry RDAP URL and terms link. No registrant contact data. Registries whose terms bar reuse (Nominet, CentralNic, Google Registry) are not queried.