What each DNS record does
The eight record types you can add, in the order you are likely to need them.
Updated 02 Sept 2026
A zone is a list of records, and every record answers one kind of question about your domain. The editor offers eight types. Most sites use three of them and never touch the rest.
The three you will actually use
A maps a name to an IPv4 address — this is what points your domain at a web server. AAAA does the same for an IPv6 address; add it alongside the A record, never instead of it.
CNAME makes one name an alias for another. The usual job is pointing www at the bare domain so both reach the same site. A CNAME cannot sit on the apex of a zone: the editor refuses it there, because a name with a CNAME is not allowed to carry anything else and an apex always carries at least the nameserver records.
এমএক্স names the mail servers for the domain, with a priority number. Lower numbers are tried first, so 10 is the primary and 20 is the backup. Nothing about email works until these are right — see setting up email.
The rest, and when they matter
টিএক্সটি holds free text, and almost all of it now serves mail authentication: এসপিএফ says which servers may send as you, ডিকিম carries the signing key, ডিমার্ক says what a receiver should do when a message fails. These are the records that decide whether your mail is trusted — why messages land in spam is mostly a story about them.
NS delegates a subdomain to somebody else nameservers. SRV advertises a service on a port, which chat and voice software use. সিএএ names the certificate authorities allowed to issue for your domain; if you add one, include the authority that issues your certificate or renewals will start failing.
Adding one
Why was my record rejected?
Each type is checked before it is saved. An A record needs four numbers, a সিএএ record looks like 0 issue "letsencrypt.org", and a name that already carries another record will not also take a CNAME. The message names which of these it was.
Do I need both an A and an AAAA record?
Only if the server has an IPv6 address. Where one exists, add both — visitors on IPv6-only networks reach you directly instead of through a translator. Where it does not, an AAAA record pointing nowhere is worse than none.