Use this checklist before a significant domain or DNS change:
- Confirm the exact domain and authoritative DNS provider.
- Record the current nameservers.
- Save the current DNS records, especially custom MX, TXT, SRV, CAA, and verification records.
- Check whether DNSSEC is active and record its DS/key state.
- Know the current TTLs and allow enough time for caches.
- For document-root or domain removal changes, create a current hosting backup.
- Change one logical component at a time when possible.
- After the change, test web, email, and any third-party services that depend on DNS.
Good change records make troubleshooting much faster if the new configuration does not behave as expected.
