![]() When you setup a virtual machine within this VNET it will automatically get assigned IP by a DHCP service and DNS lookup services by an internal IP address 168.63.129.16. Now as you might know within each subnet Azure also reserves the first 4 IP addresses to Azure related services, so for instance if we have a 10.0.0.0/16 subnet the x.x.x.2, x.x.x.3: Is reserved by Azure to map the Azure DNS Server IPs to the VNet space. When setting up a virtual network it will by default use the internal Azure DNS service. ![]() How does DNS lookup work within Microsoft Azure?Īzure provides internal name resolution for VMs and role instances (including app services) for all services that reside within a virtual network. With the latest addition of DNS Proxy to Azure Firewall ( ) and looking at some of the questions I get on this blog I guess it was time to write a bit about how DNS lookup works within Microsoft Azure.
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