Troubleshooting: my DNS change hasn't taken effect

If you've made a change and it 'isn't working', check these in order:

1. Confirm the record saved correctly — reopen it in the panel and check the value, host and type are exactly right (watch for @ vs a full name, and trailing dots).
2. Query our nameservers directly — dig @<transcom-ns> name TYPE should show the new value immediately. If it does, our side is fine and it's a caching issue elsewhere.
3. It's propagation — resolvers cache up to the record's TTL. If the old TTL was an hour, give it an hour. Use an external propagation checker to see the global picture.
4. Your own machine is cached — flush your local DNS cache, or test from a different network/phone on mobile data.
5. Check for a conflicting record — e.g. an old A record still present, or a CNAME clashing with other records on the same name.
6. Confirm the domain uses our nameservers — if the domain's NS at the registry points elsewhere, edits here won't take effect.

Still stuck? Send support the domain, the record you changed, and the output of your dig.