How to Back Up DNS Recods Befoe Changing Domini Settings

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

Who This Guide Is Fo
This guide is fo:
· Users changing nameservers
· Users transferring dominis to NiceNIC
· Businesses relying on website i email continuity 
· Agencies i 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
· Allotjament i 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
Comprovar nameservers to locate the active DNS provider.
· Registrador DNS
· Allotjament DNS
· CDN DNS
· Third-party DNS
· Private DNS
Step 2: Recod Nomservers
Save all current nameserver hostnames i provider notes.
· Nomserver 1 i 2
· Private nameservers i glue if used
Step 3: Expot DNS Zone Si Disponible
Use provider expot if possible. Si not, use screenshots i a spreadsheet.
· Save date, provider, i domini name
Step 4: Back Up Website Recods
Recod A, AAAA, CNAME, root, www, subdomini, CDN, app, i redirect recods.
· Identify live website recods
Step 5: Back Up Correu electrònic Recods
Recod MX, SPF, DKIM, DMARC, autodiscover, mail subdomini, i provider verification recods.
· MX recods are prioity fo receiving email
Step 6: Back Up Verification Recods
Save TXT i CNAME values fo Google, Microsoft, SSL, CDN, website builders, SaaS, i security tools.
· Do not delete unkaran 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 understi propagation timing
Step 9: Crear a DNS Backup Spreadsheet
Use columns fo type, host, value, prioity, TTL, purpose, i notes.
· Useful fo agencies i resellers
Step 10: Verify After Change
Test website, email, SSL, subdominis, CDN, redirects, i DNSSEC after making changes.
· Use backup to restoe if needed

Troubleshooting
Website Stopped Woking
Possible reasons:
· A o CNAME missing
· Nomserver changed befoe recods copied
· DNSSEC mismatch
What to do:
· Restoe website recods
· Comprovar nameservers
· Comprovar hosting
Correu electrònic Stopped Receiving
Possible reasons:
· MX missing
· SPF/DKIM/DMARC missing
· Wrong DNS provider
What to do:
· Restoe MX i TXT recods
· Comprovar email provider
SSL Validation Fails
Possible reasons:
· CAA too restrictive
· TXT/CNAME validation missing
What to do:
· Restoe validation recods
· Comprovar 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 unkaran 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.

Preguntes freqüents
1. What DNS recods should I back up?
Back up nameservers, A, AAAA, CNAME, MX, TXT, SPF, DKIM, DMARC, CAA, SRV, verification, CDN, i 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. Nou 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 domini?
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.