Managing DNS records
You edit the records of the zones we host on the DNS page. A change takes effect on our nameservers immediately; when the rest of the world sees it depends on the record's TTL.
Record types
| Type | What it is for | Example value |
|---|---|---|
| A | an IPv4 address | 203.0.113.10 |
| AAAA | an IPv6 address | 2001:db8::10 |
| CNAME | points to another name | example.com. |
| MX | a mail server, with a priority | 10 mx.example.com. |
| TXT | text data: SPF, DKIM, verifications | "v=spf1 mx -all" |
| SRV | where a service lives | 10 5 5060 sip.example.com. |
| CAA | which certificate authorities may issue certificates | 0 issue "letsencrypt.org" |
Adding and editing a record
- Open the zone on the DNS page.
- Under Add a record, enter the name, type, value and TTL, then click Add.
A name and type can have several values (two MX servers, for example). Enter them one value per line: saving replaces every value under that name and type. A record set can hold at most 50 values.
TTL
The TTL says how many seconds other servers may keep the record cached. It defaults to 3600 (one hour) and can be set between 60 and 604,800 (one week).
Tip: a day before a planned move, lower the TTL of the record you are about to change to 300. The switch then spreads within minutes, and you can raise it again afterwards.
What you cannot change
- Records that serve your hosting, your mail or the system are managed by us and are labelled Managed by a service. The service needs them to work, so they cannot be edited or deleted.
- A CNAME at the zone apex (on
example.comitself) is not possible, because the DNS standard requires other records there. Use A and AAAA records instead.
Importing a zone file
Import zone file loads a BIND-format zone file of up to 128 KiB. Before importing, a preview shows what would be added, what would change and what is left out on purpose.
See also: Nameservers and your DNS zone.