Open a domain from My domains: click its name, or choose DNS records in its ⋯ menu. Open the site under the name opens the domain in a new tab.
The DNS records page of novacard.uk, light themeThe DNS records page of novacard.uk, dark theme

At the top

FactWhat it shows
Connected toThe app the domain opens, with Open the app, or No app yet
Renews / ExpiresThe date, and whether auto-renew is on. See Renewal
DNSThe state of its DNS and when Jobbit last checked it
NameserversJobbit, or Your own, and the nameservers themselves
DNS stateMeaning
Setting up DNSJobbit is creating the domain’s DNS
DNS propagatingThe registry is switching the domain to Jobbit’s nameservers
DNS activeEverything works
External DNSThe domain uses nameservers of its own
DNS issueSomething is wrong. The note says what
Check again, the round arrow next to Add a record, reloads the records and the state.

Records Jobbit sets

Records marked Set by Jobbit make the connected app open at the domain. Records marked Set by Jobbit for email let the app send email from it. Jobbit keeps them up to date and they cannot be changed here; their menu only has Copy the value.
The menu of the A record set by Jobbit, light themeThe menu of the A record set by Jobbit, dark theme

Add a record

Add a record adds one of your own, for example to verify the domain with Google or point a subdomain at a shop.
FieldWhat to enter
TypeA, AAAA, CNAME, MX or TXT. The hint under it says what each is for
Name@ for the domain itself, or a subdomain such as shop. The line under it shows the full address
ValueAn IPv4 address for A, an IPv6 address for AAAA, the target for CNAME, the mail server for MX, the text for TXT
TTLHow long other servers may keep the answer. Auto suits most records
PriorityFor MX only: lower numbers are tried first
Cloudflare proxyFor A, AAAA and CNAME. Visitors reach the server through Cloudflare, which hides its address
The Add a DNS record dialog with a CNAME record, light themeThe Add a DNS record dialog with a CNAME record, dark theme
The Add a DNS record dialog with an MX record, light themeThe Add a DNS record dialog with an MX record, dark theme

Change or delete a record

A record of your own has Copy the value, Edit and Delete in its ⋯ menu.
The menu of the CNAME status record with Copy the value, Edit and Delete, light themeThe menu of the CNAME status record with Copy the value, Edit and Delete, dark theme
Delete asks first. The record stops working once DNS caches expire.
The Delete the DNS record dialog, light themeThe Delete the DNS record dialog, dark theme

When records cannot be edited

Records can be changed here only when the domain is registered and uses Jobbit’s nameservers. A domain still being registered, or one with nameservers of its own, shows Records cannot be edited here. For your own nameservers, change the records with that DNS provider.
The DNS records page of a domain with its own nameservers, light themeThe DNS records page of a domain with its own nameservers, dark theme