Moving a live domain: the record change is the shortest part
Prepare, rehearse and verify a server migration, so the record change costs only the TTL you chose in advance.
24 minutesTechnical content last reviewed on 3 Aug 2026
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What this lesson builds
- Publishing a domain's records and verifying them
- Saying what an output proves, and what it leaves open
End of the course
Diagnosing a failure: what each output proves
Read what each output actually proves, narrow an unknown failure down to one component, and fix it without destroying the evidence that explained it.
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