// REFERENCE

SRV record

Type number: 33

Locates a specific service: host and port, with priority and weight (e.g. _sip._tcp, _ldap._tcp for Active Directory). Enumerating SRV is a classic in AD domain recon.

Related tools

Work with this in:

DNS tool
AD / BloodHound

https
HTTPS record svcb
SVCB record naptr
NAPTR record uri
URI record opt
OPT record (EDNS0)

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