// REFERENCE

🌐 DNS record types

What each DNS record type is for, an example and its security implications.

// Basic

a
A record aaaa
AAAA record cname
CNAME record txt
TXT record ns
NS record soa
SOA record ptr
PTR record (reverse DNS)

// Email

mx
MX record spf
SPF record (in TXT) dkim
DKIM record (in TXT) dmarc
DMARC record (in TXT)

// Security & DNSSEC

caa
CAA record dnskey
DNSKEY record ds
DS record rrsig
RRSIG record nsec
NSEC record nsec3
NSEC3 record tlsa
TLSA record (DANE) sshfp
SSHFP record cert
CERT record

// Services

srv
SRV record https
HTTPS record svcb
SVCB record naptr
NAPTR record uri
URI record

// Other

loc
LOC record dname
DNAME record

Types per the IANA DNS parameters registry and their RFCs. Educational content.