Copyright (c) 2026 MindMesh Academy. All rights reserved. This content is proprietary and may not be reproduced or distributed without permission.
2.2.1. Azure DNS Fundamentals
Azure DNS hosts your DNS zones on Azure's global infrastructure. It provides both public and private DNS hosting.
Public DNS Zones:
- Host your internet-facing domain names (e.g., contoso.com)
- Authoritative DNS hosting (Azure answers queries for your zones)
- Global anycast network (low latency worldwide)
- Support for all standard record types: A, AAAA, CNAME, MX, TXT, SRV, NS, SOA
VNet DNS Settings:
Each VNet can specify DNS servers:
| Setting | Behavior |
|---|---|
| Default (Azure-provided) | 168.63.129.16 – resolves Azure names and forwards to internet |
| Custom DNS servers | Forward all queries to your DNS servers |
| Azure DNS Private Resolver | Advanced hybrid scenarios |
⚠️ Exam Trap: Changing VNet DNS settings requires VMs to release and renew their DHCP lease (reboot or ipconfig /renew).
Written byAlvin Varughese
Founder•15 professional certifications