DNS records

Address records, mail and text records, plus the SPF and DMARC policy that decide whether the domain can send mail. Looked up by our resolver when you press the button — nothing is stored.

Domain or IP address Look up

What you get

• A, AAAA, CNAME, MX, NS, TXT and CAA records.
• SPF and DMARC as a policy line, because those two decide whether your mail lands or is thrown away.
• An IP address gives the reverse lookup (PTR) instead of a zone.

The game behind this: Decode the Hostname — read a router's reverse DNS name

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