Skip to content
dnsmigrator

Azure DNS Dynu

Migrate DNS from Azure DNS to Dynu.

9 record types move as they are. 1 things work differently at Dynu, 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

TTLs below 60s are raised

Dynu's minimum TTL is 60 seconds. Shorter TTLs are raised to 60s and shown as translated.

A typical Azure DNS zone at Dynu

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

Azure DNS Dynu

  • UnsupportedA@

    Not migrated

    @ is an alias to an Azure resource. It needs static IP addresses at Dynu.

  • 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.

  • ExactAapp

    192.0.2.30

  • ExactCNAMEwww

    example.com.

How the move works

  1. 1

    Connect Azure DNS

    Connect Azure DNS with read-only access (Service principal (client ID + secret)).

  2. 2

    Connect Dynu

    Connect Dynu (API key (API-Key header)). 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 Dynu

    We snapshot the Dynu zone, write in batches, and leave Azure DNS untouched.

  5. 5

    Verify

    We query Dynu'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 Azure DNS

  • Azure alias records point at Azure resource IDs, which don't exist outside Azure.
  • Apex CNAMEs are not allowed. Use an alias record to an Azure resource or A/AAAA records.

Access we need: Reader on the DNS zone for the preview, DNS Zone Contributor to apply.

Good to know about Dynu

  • Wildcard records are a domain setting in Dynu and can't be migrated as DNS records.
  • TLSA, SSHFP, HTTPS/SVCB and other advanced types are read but not written, because the API's encoding for them is ambiguous.
  • Web redirects are separate objects and aren't migrated.

Access we need: Dynu API keys have full account access; there is no read-only key, so reset the key after the migration.

Questions

Will there be downtime moving from Azure DNS to Dynu?

Not if both providers serve the same answers during the switch. The records are copied to Dynu 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 Azure DNS?

No. We never write to Azure DNS. 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 Dynu and publish its new DS record. The cutover plan walks you through each step.

Related migrations

Ready to see your own zone?

Start a free preview