Cloud / DNS platform

How to change DNS records at Azure DNS

Microsoft's managed DNS, configured through the Azure portal.

Where the DNS settings live

  1. In the Azure portal search for DNS zones and open it.
  2. Click the zone for your domain.

Adding a record

  1. Click + Record set.
  2. Enter the Name (use @ for the root), pick the Type, set the TTL.
  3. Enter the value and click OK/Add.

Editing or deleting a record

  1. Click the record set in the list, change the value, and click Save.
  2. Use Delete at the top of the record-set blade to remove it.

Changing the nameservers

  1. The zone overview shows the four assigned nameservers — copy them to your registrar.

Azure DNS nameservers

These are the values you would set at your registrar to let Azure DNS run your DNS. Always confirm them in your own account — several providers assign per-account values.

  • Four assigned per zone, e.g. ns1-01.azure-dns.com

Gotchas at Azure DNS

  • Azure groups records into "record sets" — several values of the same type and name live in one set.
  • Azure uses an alias record set to point a root domain at an Azure resource.

After you save

DNS changes are not instant. Resolvers keep the old answer until the previous record's TTL expires, so a record with a 4-hour TTL can take 4 hours to change everywhere — occasionally longer if an ISP ignores TTLs. Check what the world currently sees before assuming something is broken, and see the troubleshooting page if it still looks wrong after the TTL has passed.

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