Introduction
DNS records are the instructions that tell the internet how to handle a domain name. They help connect domains to websites, email servers, name servers, and verification systems. Understanding common DNS record types makes it easier to manage a domain and troubleshoot website or email issues.
Common DNS Record Types
DNS stores information using resource records. Different record types serve different purposes.
Record Type | Purpose |
|---|---|
A | Maps a domain name to an IPv4 address |
AAAA | Maps a domain name to an IPv6 address |
CNAME | Creates an alias from one domain name to another |
MX | Identifies mail servers for a domain |
NS | Specifies authoritative name servers for the domain |
TXT | Stores text-based information such as verification data |
These records are the building blocks of practical DNS operation.
Why DNS Records Matter
DNS records are essential because they control how a domain behaves on the internet. Incorrect DNS records can cause websites to stop loading, emails to fail, or security verification to break.
For example:
If the A record is wrong, the website may point to the wrong server.
If the MX record is missing, email may not be delivered.
If TXT records are misconfigured, email authentication may fail.
If NS records are incorrect, the domain may become unreachable.
Conclusion
DNS records are the building blocks of practical DNS operation. They allow domain names to connect to web servers, mail servers, verification systems, and other internet services.
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