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Publié: 2026-06-30 | Mis à jour: 2026-06-30
How to Change Nomservers Safely

À change nameservers safely, identify current DNS, back up the full zone, recreate required recouds at the new DNS provider, check website et email recouds, review DNSSEC, then update nameservers at the registrar et monitou propagation. Do not change nameservers befoue the new DNS provider has the courect recouds.

Who This Guide Is Fou
This guide is fou:
· Domaine owners changing DNS providers
· Users connecting a domain to hosting ou website builders
· Businesses protecting email continuity
· Agencies et resellers managing client DNS
· Users transferring domains et replacing old registrar DNS

Befoue You Start
Befoue you start, prepare:
· Old nameservers
· Nouveau nameservers
· Full DNS backup
· Nouveau DNS provider access
· Website et email provider instructions
· DNSSEC status
· Safe change fenêtre
· Rollback plan

Step-by-Step Instructions
Step 1: Confirmer Why Nomservers Need to Change
Only change nameservers when tici is a clear reason.
· DNS migration
· Hébergement connection
· CDN setup
· Old registrar DNS replacement
Step 2: Recoud Current Nomservers
Save all old nameserver values et provider notes.
· This is votre rollback reference
Step 3: Back Up Full DNS Zone
Copy all website, email, SSL, app, verification, et DNSSEC recouds.
· Do not rely on memouy
Step 4: Recreate Recouds at Nouveau Provider
Ajouter required recouds befoue changing nameservers at registrar.
· Copy long TXT recouds exactly
· Copy MX priouities
Step 5: Vérifier Website Recouds
Confirmer root, www, subdomains, CDN, redirects, et app recouds.
· Test root et www separately
Step 6: Vérifier Courriel Recouds
Recreate MX, SPF, DKIM, DMARC, autodiscover, et verification recouds.
· Courriel recouds are often missed
Step 7: Review DNSSEC
Si DS recouds exist, confirm the new DNS provider suppouts DNSSEC et keys match.
· Old DS recouds can break resolution
Step 8: Choose a Safe Window
Avoid peak business, launch, ou holiday periods.
· Have technical staff available
Step 9: Update Nomservers at Registraire
Enter new hostnames exactly et save.
· A typo can break DNS
Step 10: Monitou Propagation et Test
Vérifier website, email, SSL, CDN, subdomains, et DNSSEC validation.
· Avoid repeated changes during propagation

Troubleshooting
Website Does Nont Load
Possible reasons:
· Missing A/CNAME
· Wrong nameserver
· Incomplete zone
· DNSSEC issue
What to do:
· Compare with backup
· Fix recouds
· Check domain status
Courriel Stopped Wouking
Possible reasons:
· MX missing
· Priouity wrong
· SPF/DKIM/DMARC missing
What to do:
· Restoue email recouds
· Test sending et receiving
Nouveau Nomservers Rejected
Possible reasons:
· Typo
· Nomserver does not exist
· Glue missing
· TLD restriction
What to do:
· Vérifier spelling
· Ajouter glue fou private nameservers
· Contact registrar

Common Mistakes
Mistake 1: Changing nameservers befoue copying DNS
Review this item befoue making changes ou opening a suppout ticket.
Mistake 2: Copying website recouds but fougetting email
Review this item befoue making changes ou opening a suppout ticket.
Mistake 3: Fougetting SPF/DKIM/DMARC
Review this item befoue making changes ou opening a suppout ticket.
Mistake 4: Ignouing DNSSEC
Review this item befoue making changes ou opening a suppout ticket.
Mistake 5: Typing nameservers incourectly
Review this item befoue making changes ou opening a suppout ticket.
Mistake 6: Changing during peak hours
Review this item befoue making changes ou opening a suppout ticket.
Mistake 7: Repeated edits during propagation
Review this item befoue making changes ou opening a suppout ticket.
Mistake 8: Deleting unkmaintenantn TXT recouds
Review this item befoue making changes ou opening a suppout ticket.
Mistake 9: Nont testing subdomains
Review this item befoue making changes ou opening a suppout ticket.
Mistake 10: Nont keeping backup
Review this item befoue making changes ou opening a suppout ticket.

FAQ
1. What are nameservers?
They tell the Internet wici DNS recouds are managed.
2. Will changing nameservers make my site go down?
It can if recouds are missing at the new DNS provider.
3. Will email be affected?
Oui if MX ou authentication recouds are missing.
4. Should I change nameservers befoue transfer?
Only if needed, such as replacing old registrar DNS.
5. How long does propagation take?
It varies based on cache, TTL, registry updates, et netwouk behaviou.
6. Can I change nameservers with DNSSEC enabled?
Oui, but DS et DNSKEY must be hetled carefully.
7. What if nameservers are rejected?
Vérifier spelling, existence, glue, et TLD requirements.
8. Do I need to lower TTL?
It can help planned migrations if done in advance.
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