Azure DNS

 

• Enables you to host your DNS zone and manage your DNS records.
• DNS zone allows you to configure a private and public DNS zone.
• Alias recordsets:
  • A – maps the host to IPv4.
  • AAAA – maps the host to IPv6.
  • CNAME – create a record to point to another domain.
• A limit of 20 alias record sets per resource.
• Uses Anycast networking to route users to the closest name servers.
• You can monitor your DNS zone metrics using Azure Monitor.
  • QueryVolume – query traffic received.
  • RecordSetCount – the number of recordsets in your DNS.
  • RecordSetCapacityUtilization – percentage of utilization of your recordset capacity.
• Azure Private DNS allows you to use your custom domain name in your private VNet.
• Alias record allows you to point your naked domain or apex to a traffic manager or CDN endpoint.

Private DNS

• Allows you to manage and resolve domain names in a virtual network.
• Configure a split-horizon DNS to create zones with the same name.
• It also supports all types of DNS records types: A, AAAA, CNAME, MX, PTR, SOA, SRV, and TXT.
• A virtual network can be linked to only one private zone. But you can link multiple virtual networks to a single DNS zone.
• Private IP space in the linked virtual network allows reverse DNS.

Security

• To prevent accidental zone deletion, you can apply a ‘CanNotDelete’ lock.
• Create a custom role to ensure it doesn’t have a zone delete permission.
• You can deploy a DNS firewall to mitigate DNS-related security issues.

Pricing

• Billed on the number of hosted DNS zones.
• You are charged based on the number of DNS queries received.