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dnsmigrator

Oracle Cloud DNS Hetzner DNS

Migrate DNS from Oracle Cloud to Hetzner.

13 record types move as they are. 2 things work differently at Hetzner, 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
  • PTR
  • TLSA
  • HTTPS
  • SVCB
  • DS

Alias records are converted

Oracle Cloud alias records become CNAMEs below the apex. At the apex they need static addresses, and the preview shows which ones.

A typical Oracle Cloud zone at Hetzner

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

Oracle Cloud Hetzner

  • ExactA@

    192.0.2.70

  • ExactAAAA@

    2001:db8::70

  • 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.

  • ExactCNAMEwww

    example.com.

How the move works

  1. 1

    Connect Oracle Cloud

    Connect Oracle Cloud with read-only access (API signing key (tenancy, user, fingerprint, key)).

  2. 2

    Connect Hetzner

    Connect Hetzner (Hetzner Cloud API token (per project)). 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 Hetzner

    We snapshot the Hetzner zone, write in batches, and leave Oracle Cloud untouched.

  5. 5

    Verify

    We query Hetzner'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 Oracle Cloud

  • Only public zones in the commercial realm (oraclecloud.com) are supported. Private resolver zones are skipped.
  • Apex NS records are fixed by Oracle Cloud, and records marked as protected can't be changed.
  • DNSSEC key-signing-key rollovers still need a manual promote step in Oracle Cloud after the DS record is updated at the registrar.

Access we need: An IAM policy with “read dns” for the preview; “manage dns” to apply.

Good to know about Hetzner

  • Uses the Hetzner Console (Cloud API) DNS. The old DNS Console at dns.hetzner.com and its API were shut down in May 2026.
  • The Cloud API has no DNSSEC signing, so turn DNSSEC off at the registrar before switching nameservers.
  • Only registrable domains can be zones. Subdomains such as dev.example.com can't be their own zone.

Access we need: A Read token for the preview; a Read & Write token to apply.

Questions

Will there be downtime moving from Oracle Cloud to Hetzner?

Not if both providers serve the same answers during the switch. The records are copied to Hetzner 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 Oracle Cloud?

No. We never write to Oracle Cloud. 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 Hetzner and publish its new DS record. The cutover plan walks you through each step.

Related migrations

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