DNS Checker

A fast DNS checker that validates domain records across common types using Google Public DNS or a custom resolver for troubleshooting and verification by IT teams.

Tool coming soon!

We're working hard to get this tool ready for you.

Request Feature / Support

1,224+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

AI Web Tool Generator

Build Your Own Custom Web Calculator in Seconds

Type what tool or calculator you need below. Our AI will build it instantly for your site.

About This Tool

The tool accepts inputs: domain_name, record_type, dns_server, and optional timeout. It performs a DNS query to the specified resolver and returns a structured list of answer, authority, and additional sections.
Conceptually, it mirrors standard DNS resolution: querying root hints, following delegations, and seeking the requested data. It normalizes results into a uniform schema regardless of the record type.
Who benefits: network admins, web developers, security teams, site reliability engineers. Unique differentiators: ability to target Google Public DNS or a custom resolver, consistent output schema, and explicit handling of common error codes. Core features include input validation, multiple record types, TTL reporting, error classification (NXDOMAIN, SERVFAIL), and an exportable JSON structure.
Use cases include verifying post-migration records, diagnosing intermittent resolution failures, and auditing DNS configurations for compliance and security.

Save your calculation history with a free account

How to Use

Provide inputs: domain_name, record_type, dns_server (optional), timeout (optional).
Choose DNS server: Google Public DNS or a custom resolver.
Run query: Execute the DNS lookup for the specified record type.
Review outputs: Inspect records array, TTLs, and status codes to determine correctness.
Export results: Save or transmit the structured JSON for logs or reports.

Frequently Asked Questions

Find Quick Answers

What record types are supported?

Supported types include A, AAAA, MX, NS, TXT, CNAME, SOA, and SRV. Additional types can be added; complex records may be returned as multiple entries within the records array.

How are TTLs and values represented?

TTL is provided in seconds for each record. Values are presented in a uniform field per type: IPs for A/AAAA, hostnames for MX/NS/SOA/CNAME, and raw strings for TXT.

Does the tool validate DNSSEC?

The tool reports DNSSEC-related flags when the responder provides DNSSEC data; full validation requires additional checks against DS records and validation status.

What happens on NXDOMAIN or timeouts?

NXDOMAIN yields a negative status with any available delegation information. Timeouts return a failure status with elapsed time and may include partial results if some records responded.

Need to run multiple calculations?

Create a free account today to unlock unlimited daily runs, access advanced parameters, save your history, and request custom features.

Related Tools

Other useful calculators and utilities you might like

Spotify to MP3 Converter

Convert Spotify tracks and playlists to MP3 format instantly with our free online converter.

Road Distance Calculator

Calculate the driving distance and travel time between two addresses with our free online road dista...

Age Calculator

Calculate your exact age in years, months, and days from any birth date to any target date.

Currency Converter

Convert currencies instantly with real-time exchange rates and historical data support.

Your Feedback Matters

Help Us to Improve