// REFERENCE

CNAME record

Type number: 5

An alias pointing a name to another name (e.g. www → example.com). It can't coexist with other records on the same name or be used at the domain apex. A CNAME to a removed resource risks subdomain takeover.

Related tools

Work with this in:

Subdomain takeover
DNS tool

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

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