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What is DNS Checker?

DNS Checker is a professional tool for querying and comparing DNS records across major DNS resolvers. It’s designed for developers, system administrators, and anyone who needs to verify DNS propagation and troubleshoot DNS issues.

Try DNS Checker

Check DNS records across multiple resolvers instantly.

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Overview

DNS Checker provides a simple yet powerful interface to:
  • Query Multiple Resolvers: Check DNS records from Google, Cloudflare, Quad9, and more
  • Compare Results: See differences across different DNS providers
  • Support All Record Types: A, AAAA, MX, CNAME, TXT, NS, SOA, and more
  • Real-Time Results: Get instant DNS query results

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Key Features

Multiple Resolvers

Query Google DNS, Cloudflare, OpenDNS, Quad9, and other major resolvers.

All Record Types

Support for A, AAAA, MX, CNAME, TXT, NS, SOA, PTR, and more record types.

Fast Queries

Get results in seconds from all resolvers simultaneously.

Dark Mode

Beautiful dark theme for comfortable viewing.

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Who Needs DNS Checker?

Web Developers - Verify DNS changes for websites - Check SSL/TLS certificate DNS records - Troubleshoot domain connectivity issues - Validate DNS propagation

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Supported DNS Resolvers

Query DNS records from these major providers:
Public DNS: - Google DNS (8.8.8.8) - Cloudflare (1.1.1.1) - Quad9 (9.9.9.9) - OpenDNS
Alternative: - AdGuard DNS - CleanBrowsing - Comodo Secure DNS - Level3
Regional: - Verisign - DNS.WATCH - UltraDNS - Custom resolvers

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DNS Record Types

  • A: IPv4 address records - AAAA: IPv6 address records - MX: Mail exchange records - CNAME: Canonical name records - TXT: Text records (SPF, DKIM, verification) - NS: Nameserver records
  • SOA: Start of Authority - PTR: Reverse DNS lookup - SRV: Service records - CAA: Certificate Authority Authorization - DNSKEY: DNSSEC keys - DS: Delegation Signer

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Common Use Cases

DNS Propagation: - Check if DNS changes have propagated - Verify records across different regions - Monitor DNS update status - Troubleshoot propagation delays
Troubleshooting: - Diagnose website connectivity issues - Verify email server configuration - Check SSL certificate DNS records - Debug CDN DNS setup

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Why Use DNS Checker?

Fast & Reliable Get results from multiple resolvers in seconds.

Secure All queries are performed securely over HTTPS.

User-Friendly Clean, intuitive interface for easy DNS checking.

Developer-Friendly Perfect for technical users who need detailed DNS information.

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Technology

DNS Checker is built with:
  • Frontend: React with responsive design
  • DNS Queries: Modern DNS-over-HTTPS (DoH) protocols
  • UI: Tailwind CSS with dark mode support
  • Performance: Optimized for fast queries

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Get Started

Explore Features

Learn about all DNS checking capabilities

Usage Guide

Learn how to use DNS Checker effectively