Back to All Blogs1 min read14 Sept 2026
Web Fundamentals
How DNS Works: From a Domain Name to an IP Address
“A clear walkthrough of resolvers, authoritative servers, caching and DNS records.”
How DNS Works
Humans prefer names such as:
nextgen-cto.inNetworks route traffic using IP addresses.
DNS connects those worlds.
Generating diagram...
Common Record Types
| Record | Purpose |
|---|---|
| A | IPv4 address |
| AAAA | IPv6 address |
| CNAME | Alias |
| MX | Mail server |
| TXT | Verification / text |
| NS | Authoritative nameserver |
DNS Caching
DNS answers normally have a TTL.
TTL = 3600Note
What people call “DNS propagation” is often simply caches around the world expiring at different times.
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