Free DNS Record Checker

Look up all DNS records for any domain instantly. A, AAAA, MX, TXT, NS, SOA, CNAME, CAA with provider identification and reverse DNS.

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Understanding DNS records

DNS (Domain Name System) is the Internet's directory service. It translates human-readable domain names into IP addresses and other machine-readable data that servers need to route traffic and deliver email.

Each record type serves a specific purpose: A/AAAA for web hosting, MX for email routing, TXT for authentication and verification, NS for delegation, SOA for zone management, CNAME for aliases, and CAA for certificate security.

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What is DNS?

DNS translates domain names to IP addresses. Every time you visit a website or send an email, DNS is involved.

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DNS propagation

DNS changes take time to propagate based on TTL values. Lower the TTL before making changes to speed up propagation.

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DNS and email security

SPF, DKIM, DMARC, MTA-STS, and TLS-RPT are all DNS-based protocols that protect your email from spoofing and interception.

Frequently Asked Questions

DNS records are entries in the Domain Name System that map domain names to IP addresses and other data. Common types include A (IPv4), AAAA (IPv6), MX (mail servers), TXT (text data), NS (name servers), SOA (zone authority), CNAME (aliases), and CAA (certificate authorization).

An MX (Mail Exchange) record specifies which mail servers accept email for your domain and in what priority order. Lower priority values indicate preferred servers.

TXT records store text data and are commonly used for email authentication (SPF, DKIM, DMARC), domain ownership verification (Google, Microsoft, Facebook), and security policies (MTA-STS, TLS-RPT).

Reverse DNS maps an IP back to a hostname via PTR records. Forward-Confirmed rDNS (FCrDNS) verifies the PTR hostname resolves back to the original IP. This is critical for email deliverability.

Propagation depends on the TTL (Time To Live) of each record. Changes can take from minutes to 48 hours. Lower your TTL before making changes to speed up propagation.

CAA (Certificate Authority Authorization) records specify which CAs can issue SSL/TLS certificates for your domain, helping prevent unauthorized certificate issuance.

Go beyond DNS lookups

DNS records are the foundation. Run a full email audit to check SPF, DKIM, DMARC, TLS, blocklists, IP reputation, and more.

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Other free tools

SPF Checker DKIM Checker DMARC Checker BIMI Checker Blocklist Checker Header Analyzer MTA-STS Checker TLS-RPT Checker