TellMeMyThings

Enter a domain on the left to quickly pull high-signal information that’s useful during onboarding, audits, and troubleshooting: Microsoft 365 tenant presence, mail posture (MX/SPF/DMARC), and registration / DNS hosting details.

This tool uses public DNS and metadata lookups to help you quickly access commonly saught information. Results can vary slightly depending on DNS propagation and registrar privacy policies.