Understanding DNS: How Domain Names Actually Work

Learn how DNS translates domain names to IP addresses and how DNS resolution works step by step.

By RiseTop Team · May 2026 · 8 min read

DNS is the internet phonebook that translates human-readable domain names into machine-readable IP addresses.

How DNS Resolution Works

  1. Browser cache check
  2. OS resolver cache check
  3. Recursive resolver query
  4. Root nameserver lookup
  5. TLD nameserver lookup
  6. Authoritative nameserver returns the IP

Essential DNS Records

RecordPurposeExample
AIPv4 address93.184.216.34
AAAAIPv6 address2606:2800:220:1::
CNAMEAliaswww to example.com
MXMail servermail.example.com
TXTText dataSPF, verification
Lookup DNS Records Free

Frequently Asked Questions

What is DNS propagation? +
When you change DNS records, it takes time to spread across all DNS servers. This typically takes 1-48 hours, though most updates complete within 4-6 hours.
What is DNS caching? +
DNS caching stores lookup results temporarily to speed up future requests. Browser, OS, and resolver caches all contribute.
How do I check DNS records? +
Use RiseTop DNS Lookup tool to query any domain records, or use nslookup or dig in your terminal.

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