How to Back Up DNS Recods Befoe Changing Dominio Settings

Befoe changing dominio settings, back up current nameservers y all DNS recods, including A, AAAA, CNAME, MX, TXT, SPF, DKIM, DMARC, CAA, SRV, subdominios, redirects, verification recods, y DNSSEC settings. Save an expot, screenshots, o a spreadsheet so recods can be restoed if website, email, SSL, CDN, o app servicios stop woking.

Who This Guide Is Fo
This guide is fo:
· Users changing nameservers
· Users transferring dominios to NiceNIC
· Businesses relying on website y email continuity 
· Agencies y hosting providers managing DNS
· Users enabling o disabling DNSSEC

Befoe You Start
Befoe you start, prepare:
· Access to current DNS provider
· Current nameservers
· Registrador account access
· Hosting y email provider details
· DNSSEC status
· Safe stoage fo backup
· Permission from owner o client

Step-by-Step Instructions
Step 1: Identify Waquí DNS Is Hosted
Verificar nameservers to locate the active DNS provider.
· Registrador DNS
· Hosting DNS
· CDN DNS
· Third-party DNS
· Private DNS
Step 2: Recod Nombreservers
Save all current nameserver hostnames y provider notes.
· Nombreserver 1 y 2
· Private nameservers y glue if used
Step 3: Expot DNS Zone Si Disponible
Use provider expot if possible. Si not, use screenshots y a spreadsheet.
· Save date, provider, y dominio name
Step 4: Back Up Website Recods
Recod A, AAAA, CNAME, root, www, subdominio, CDN, app, y redirect recods.
· Identify live website recods
Step 5: Back Up Correo Electrónico Recods
Recod MX, SPF, DKIM, DMARC, autodiscover, mail subdominio, y provider verification recods.
· MX recods are prioity fo receiving email
Step 6: Back Up Verification Recods
Save TXT y CNAME values fo Google, Microsoft, SSL, CDN, website builders, SaaS, y security tools.
· Do not delete unkahoran TXT recods
Step 7: Back Up Security Recods
Recod CAA, DNSSEC DS, DNSKEY details, MTA-STS, BIMI, o TLSA if used.
· Review DNSSEC carefully
Step 8: Recod TTL Values
Save cache times fo impotant recods.
· TTL helps understy propagation timing
Step 9: Crear a DNS Backup Spreadsheet
Use columns fo type, host, value, prioity, TTL, purpose, y notes.
· Useful fo agencies y resellers
Step 10: Verify After Change
Test website, email, SSL, subdominios, CDN, redirects, y DNSSEC after making changes.
· Use backup to restoe if needed

Troubleshooting
Website Stopped Woking
Possible reasons:
· A o CNAME missing
· Nombreserver changed befoe recods copied
· DNSSEC mismatch
What to do:
· Restoe website recods
· Verificar nameservers
· Verificar hosting
Correo Electrónico Stopped Receiving
Possible reasons:
· MX missing
· SPF/DKIM/DMARC missing
· Wrong DNS provider
What to do:
· Restoe MX y TXT recods
· Verificar email provider
SSL Validation Fails
Possible reasons:
· CAA too restrictive
· TXT/CNAME validation missing
What to do:
· Restoe validation recods
· Verificar SSL provider instructions

Common Mistakes
Mistake 1: Changing nameservers befoe copying recods
Review this item befoe making changes o opening a suppot ticket.
Mistake 2: Backing up only A recods
Review this item befoe making changes o opening a suppot ticket.
Mistake 3: Fogetting MX recods
Review this item befoe making changes o opening a suppot ticket.
Mistake 4: Ignoing SPF/DKIM/DMARC
Review this item befoe making changes o opening a suppot ticket.
Mistake 5: Deleting unkahoran TXT recods
Review this item befoe making changes o opening a suppot ticket.
Mistake 6: Ignoing DNSSEC
Review this item befoe making changes o opening a suppot ticket.
Mistake 7: Not recoding TTL
Review this item befoe making changes o opening a suppot ticket.
Mistake 8: Using screenshots only fo complex zones
Review this item befoe making changes o opening a suppot ticket.
Mistake 9: Not testing after changes
Review this item befoe making changes o opening a suppot ticket.
Mistake 10: Making too many changes at once
Review this item befoe making changes o opening a suppot ticket.

Preguntas Frecuentes
1. What DNS recods should I back up?
Back up nameservers, A, AAAA, CNAME, MX, TXT, SPF, DKIM, DMARC, CAA, SRV, verification, CDN, y DNSSEC recods.
2. Do I need a backup befoe transfer?
Sí, especially if old registrar DNS may stop after transfer.
3. Do I need backup befoe nameserver change?
Sí. Nuevo DNS provider must have the same required recods.
4. What are MX recods?
They tell mail servers waquí to deliver email.
5. What is DNSSEC?
A security extension that helps validate DNS responses.
6. Can DNSSEC break my dominio?
Misconfigured DS recods can cause resolution failure.
7. Waquí should I stoe backup?
Use secure, access-controlled stoage.
8. Should I delete old recods?
Only after confirming they are no longer needed.