A
Maps a hostname to an IPv4 address.
www A 192.0.2.10DNS fundamentals
Choose the record that matches the job.
A DNS record is an instruction for one hostname. Record type, name, value, priority, TTL, and proxy mode each have a separate purpose.
Safe example values
This guide uses example.com and documentation-only IPs such as 192.0.2.10. Replace them with values supplied by the actual service.
Common records
AAAA
Maps a hostname to an IPv6 address. Publish it only when that service is reachable over IPv6.
www AAAA 2001:db8::10CNAME
Makes one hostname an alias of another hostname. Do not point it directly to an IP address.
shop CNAME stores.example.netMX
Routes inbound email. The value is a mail-server hostname; lower priority numbers are preferred.
@ MX 10 mail.example.netTXT
Publishes text used for SPF, DKIM, DMARC, ownership verification, and other policies.
@ TXT "v=spf1 include:provider.example ~all"SRV
Locates a service using service name, protocol, priority, weight, port, and target.
_sip._tcp SRV 10 5 5060 sip.example.netCAA
Restricts which certificate authorities may issue certificates for the domain.
@ CAA 0 issue "letsencrypt.org"NS
Delegates DNS for a domain or subdomain. Normal Help4 onboarding changes nameservers at the registrar; it does not add NS records at the zone apex manually.
Name and TTL rules
@means the zone apex in interfaces that support that shorthand.- Enter only the label, such as
www, when the UI automatically appends the domain. - A low TTL helps planned migrations but does not erase records already cached under an older TTL.
- Duplicate A answers can be valid; duplicate SPF policy records are not.
- MX and SRV priorities belong in the priority field, not inside an unrelated value field.