WhoisXML API - Domain, IP, and DNS data provider
DNS Diagnosis - Free AI DNS record diagnostics tool.
Oribi - Analytics for marketing & product teams
AdGuard DNS - Soon you'll be able to create your own private DNS server that will protect your personal data, block ads and trackers, and allow you to control access to specific Internet content.
Abstract APIs - Simple, powerful APIs for everyday dev tasks
BrandHunt V2 - Search/track domain & social media handles in real time.