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dnsmigrator

Cloudflare DNS CSC Global Domain Manager

Migrate DNS from Cloudflare to CSC.

8 record types move as they are. 5 things work differently at CSC, and the preview shows exactly which of your records they affect.

Free preview. Read-only. Nothing changes until you apply.

What works differently

Generated from the same provider capability data the migration engine uses.

Moves as-is

  • A
  • AAAA
  • CNAME
  • MX
  • TXT
  • NS
  • SRV
  • CAA

Proxied records lose the CDN

CSC has no equivalent of Cloudflare's proxy. Proxied records move as plain records pointing at your origin, which exposes the origin IP. Put a CDN in front before cutting over if that matters.

Apex CNAMEs need a different shape

CSC doesn't allow a CNAME at the apex and has no alias record for external hostnames. These become static A/AAAA records, which don't follow the target if its IPs change.

"Auto" TTLs get a real value

Cloudflare's automatic TTL has no equivalent, so those records get CSC's default of 14400s.

Domains registered at Cloudflare must transfer out

Cloudflare Registrar only allows Cloudflare's nameservers. If the domain is registered there, transfer it to another registrar before switching.

A typical Cloudflare zone at CSC

Example records for example.com. Open any flagged row to read why it changed.

Cloudflare CSC

  • UnsupportedCNAME@

    Not migrated

    @ is a CNAME at the zone apex. CSC doesn't allow that, and app.example-host.net isn't a target it can alias.

  • ExactMX@

    10 mx1.mail.example.net. +1

  • ExactTXT@

    "v=spf1 include:_spf.example.net -all"

  • ExactCAA@

    0 issue "letsencrypt.org"

  • ExactTXT_dmarc

    "v=DMARC1; p=reject; rua=mailto:dmarc@example.com"

  • ExactSRV_sip._tls

    100 1 443 sip.example.net.

  • ExactAmail

    203.0.113.25

  • ReviewAshop

    203.0.113.10

    TTL was "auto". Set to 14400s.

  • ExactCNAMEwww

    example.com.

How the move works

  1. 1

    Connect Cloudflare

    Connect Cloudflare with read-only access (Scoped API token).

  2. 2

    Connect CSC

    Connect CSC (API key + bearer (user) token). Write access is only used when you apply.

  3. 3

    Review the preview

    Check every record marked Review or Unsupported. Each one explains what changes and why.

  4. 4

    Apply to CSC

    We snapshot the CSC zone, write in batches, and leave Cloudflare untouched.

  5. 5

    Verify

    We query CSC's own nameservers for every record and compare the answers before you switch.

  6. 6

    Switch nameservers

    Lower TTLs a day or two ahead, remove any DS record if DNSSEC is on, then point the domain at the new nameservers at your registrar.

Good to know about Cloudflare

  • Proxied (orange-cloud) records hide the origin IP. Moving them to another provider sends traffic straight to the origin.
  • Apex CNAMEs are flattened by Cloudflare. Other providers need an ALIAS record or static A/AAAA records instead.
  • Cloudflare Registrar only allows Cloudflare nameservers, so domains registered there must be transferred out first.

Access we need: Zone → DNS → Read for the preview, Zone → DNS → Edit to apply.

Good to know about CSC

  • CSC applies zone edits asynchronously and allows one pending edit per zone, so an apply waits for earlier edits to finish.
  • Only A, AAAA, CNAME, MX, NS, SRV, TXT and CAA records can be managed; zones must be created by CSC.
  • Bearer tokens expire; refresh the token in CSCDomainManager if access stops working.

Access we need: An API user with zone view rights for the preview; zone edit rights on the migrated zones to apply.

Questions

Will there be downtime moving from Cloudflare to CSC?

Not if both providers serve the same answers during the switch. The records are copied to CSC and verified before you change nameservers, so resolvers get the same answer from either side while caches expire.

Do I have to delete anything at Cloudflare?

No. We never write to Cloudflare. Keep the old zone for a week after cutover so you can switch back instantly if anything looks wrong.

What about DNSSEC?

If DNSSEC is on, remove the DS record at your registrar and wait for it to expire before switching nameservers. Then enable DNSSEC at CSC and publish its new DS record. The cutover plan walks you through each step.

What happens to Cloudflare proxied records?

They move as ordinary records pointing at your origin server, because CSC can't proxy traffic. The preview lists every proxied record and the IP it would expose.

Related migrations

Ready to see your own zone?

Start a free preview