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DNS Record Types Explained

Understanding different DNS record types

A

Address Record

Maps a domain name to an IPv4 address. The most common DNS record type used to point domains to web servers.

AAAA

IPv6 Address Record

Maps a domain name to an IPv6 address. Used for modern IPv6 networks and servers.

MX

Mail Exchange Record

Specifies mail servers responsible for receiving email on behalf of a domain. Includes priority values.

TXT

Text Record

Holds text information for various purposes including SPF, DKIM, DMARC for email authentication and domain verification.

NS

Name Server Record

Specifies authoritative name servers for a domain. Delegates DNS management to specific providers.

CNAME

Canonical Name Record

Aliases one domain name to another. Often used for subdomains pointing to main domains.

SOA

Start of Authority Record

Contains administrative information about the domain including primary name server, admin email, and zone serial numbers.

PTR

Pointer Record

Used for reverse DNS lookups, mapping an IP address to a domain name. Often used for email server verification.

CAA

Certification Authority Authorization

Specifies which Certificate Authorities are allowed to issue SSL certificates for the domain.

Frequently Asked Questions

Everything you need to know about DNS lookup

What is DNS?

DNS (Domain Name System) is like the phonebook of the internet. It translates human-readable domain names (like google.com) into IP addresses that computers use to connect to each other.

How long does DNS propagation take?

DNS propagation typically takes 24-48 hours for global propagation, but most changes are visible within a few hours. The TTL (Time To Live) setting on your DNS records determines how long DNS resolvers cache the information.

What is the difference between A and CNAME records?

An A record directly maps a domain to an IP address. A CNAME record aliases one domain name to another domain name. Use A records for root domains and CNAMEs for subdomains pointing to other domains.

What are MX records used for?

MX (Mail Exchange) records specify which mail servers are responsible for receiving email on behalf of your domain. They include priority values to determine the order of mail server usage.

What is TTL in DNS?

TTL (Time To Live) tells DNS resolvers how long to cache a DNS record before requesting a fresh copy. Lower TTLs (300-600 seconds) are good for frequent changes, while higher TTLs (3600-86400 seconds) improve performance for stable records.

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