DNS Lookup

Query DNS records for any domain using Google DNS-over-HTTPS. Supports A, AAAA, MX, CNAME, TXT, NS, and SOA records. Free, instant, no API key needed.

Domain

Record Type

Enter a domain and click Look Up or a record type button.

About DNS Lookup Tool

Query DNS records for any domain using Google's public DNS-over-HTTPS (DoH) API. View A (IPv4), AAAA (IPv6), MX (mail exchange), CNAME (canonical name), TXT (text), NS (nameserver), and SOA (start of authority) records. All lookups are performed over HTTPS for privacy and security.

All Record Types

Query A, AAAA, MX, CNAME, TXT, NS, SOA, or all records at once. Get complete DNS information for any domain in a single interface.

DNS-over-HTTPS

Uses Google's secure DNS-over-HTTPS API for encrypted lookups. Your DNS queries are protected from eavesdropping and tampering.

No API Key

The Google DoH API is free and open — no registration or API key required. Just enter a domain and start querying immediately.

Instant Results

Results appear in a clean, sortable table with TTL values and record data. Toggle between individual record types or view everything at once.

📋 Common Use Cases

Pre-Commit Checking

Validate JSON, HTML, or other structured data before committing to your repository. Prevent broken configs from reaching production.

API Response Verification

Validate JSON responses from your API endpoints during development and testing. Ensure your data contracts are well-formed.

Configuration Debugging

Find syntax errors in JSON configuration files, package.json, or manifest files. Get line-level error details for quick fixes.

Code Quality Assurance

Validate HTML for accessibility and standards compliance. Catch missing tags, invalid attributes, and structural issues.

🪜 How to Use This Tool

Paste code or data to validate
Enter JSON, HTML, or other structured text into the input area. Syntax errors are highlighted in real time.

Review error details
See line numbers, column positions, and descriptions for each issue. Click errors to jump to the problematic location.

Fix and revalidate
Edit in place and see validation results update automatically. Iterate until your code is clean.

Copy validated code
Once valid, copy the code for use in your project. Some validators also format/beautify the output.

Frequently Asked Questions

Are these dev tools free?▼

Yes. All dev tools are completely free. No signup, no account.

Is my data sent to a server?▼

No. Base64 encoding, URL encoding, JWT decoding, hash generation, and regex testing all happen in your browser. Your tokens and secrets stay on your device.

Can I decode JWTs safely?▼

Yes. JWT decoding happens entirely in your browser. The token never leaves your device. Only the header and payload are decoded — signatures are not verified server-side.