Azure Private DNS Google Cloud DNS
Migrate DNS from Azure Private DNS to Cloud DNS.
7 record types move as they are. Nothing else needs special handling.
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
- SRV
- PTR
A straightforward move.
A typical Azure Private DNS zone at Cloud DNS
Example records for example.com. Open any flagged row to read why it changed.
Azure Private DNS Cloud DNS
- 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.
| Status | Type | Name | At Cloud DNS | TTL | Details |
|---|---|---|---|---|---|
| Exact | A | @ |
| 5m | |
| Exact | AAAA | @ |
| 5m | |
| Exact | MX | @ |
| 1h | |
| Exact | TXT | @ |
| 1h | |
| Exact | CAA | @ |
| 1h | |
| Exact | TXT | _dmarc |
| 1h | |
| Exact | SRV | _sip._tls |
| 1h | |
| Exact | CNAME | www |
| 1h |
How the move works
- 1
Connect Azure Private DNS
Connect Azure Private DNS with read-only access (Service principal (client ID + secret)).
- 2
Connect Cloud DNS
Connect Cloud DNS (Service account key (JSON)). Write access is only used when you apply.
- 3
Review the preview
Check every record marked Review or Unsupported. Each one explains what changes and why.
- 4
Apply to Cloud DNS
We snapshot the Cloud DNS zone, write in batches, and leave Azure Private DNS untouched.
- 5
Verify
We query Cloud DNS's own nameservers for every record and compare the answers before you switch.
- 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 Private DNS
- Private zones only resolve inside Azure virtual networks linked to the zone, so changes can't be checked with public DNS lookups.
- Link the zone to your virtual networks after migrating; records auto-registered by VMs are skipped.
- Only A, AAAA, CNAME, MX, PTR, SRV and TXT records are supported; NS and CAA aren't.
Access we need: Reader on the resource group for the preview; Private DNS Zone Contributor to apply or create zones.
Good to know about Cloud DNS
- Routing policies (weighted round robin, geolocation, failover) don't carry over to most providers.
- Apex CNAMEs are not allowed.
Access we need: roles/dns.reader for the preview, roles/dns.admin to apply.
Questions
Will there be downtime moving from Azure Private DNS to Cloud DNS?
Not if both providers serve the same answers during the switch. The records are copied to Cloud DNS 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 Private DNS?
No. We never write to Azure Private 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 Cloud DNS and publish its new DS record. The cutover plan walks you through each step.
Ready to see your own zone?
Start a free preview