DNS Codes & Tables
Domain Name System records and resolution.All DNS pages
- DNS record types list: A, AAAA, CNAME, MX, TXT, NS, SOA, SRV, CAA, HTTPS and their numbersDNS record types with their IANA numbers: A 1, NS 2, CNAME 5, MX 15, TXT 16, AAAA 28, SRV 33, HTTPS 65, CAA 257 and more, with what each record holds.
- DNS response codes (RCODE): NOERROR, NXDOMAIN, SERVFAIL, REFUSEDDNS RCODE values from 0 NOERROR to 23 BADCOOKIE: what NXDOMAIN, SERVFAIL, REFUSED and FORMERR mean, NODATA vs NXDOMAIN, and what to check for each one.