What is DNS over HTTPS (DoH)?

DNS over HTTPS (DoH) is an IETF standard protocol (RFC 8484) that encrypts DNS queries via HTTPS, protecting your browsing and lookup privacy from eavesdropping and man-in-the-middle tampering.

Why do different resolvers show different TTLs?

Time-To-Live (TTL) values decrease every second as records sit in a recursive resolver cache. Resolvers that answered recent queries will report a lower remaining TTL than authoritative servers.

In-Browser DNS Record Inspector via DoH

Query A, AAAA, MX, TXT, CNAME, NS, SOA, and CAA records directly via encrypted DNS over HTTPS.

Security Guarantee: 100% Client-Side In-Browser Execution. Computations run locally within browser RAM. Zero remote telemetry.

Technical Overview & Architecture

Query authoritative and recursive Domain Name System records (A, AAAA, MX, TXT, CNAME, NS, SOA, PTR, SRV, CAA) directly from your browser using encrypted DNS-over-HTTPS (DoH) endpoints with zero server logging.

The tool uses the browser fetch API to dispatch secure HTTPS requests to public DoH JSON APIs. Results are parsed into formatted tables showing Record Name, Type, TTL, and target IP/data payload.

Key Capabilities & Features

Encrypted RFC 8484 Protocol: Queries DNS-over-HTTPS endpoints using strict application/dns-json headers, circumventing ISP transparent DNS interception.
All Standard Record Types: Supports A (IPv4), AAAA (IPv6), MX (Mail Exchange), TXT (SPF/DKIM), CNAME, NS, SOA, PTR, SRV, and CAA verification.
Multi-Resolver Switcher: Compare resolution results between Cloudflare DNS (1.1.1.1), Google Public DNS (8.8.8.8), and Quad9 (9.9.9.9).
Raw JSON & Response Code Diagnostics: Inspect full DoH response trees with TTL counters and RFC status codes (NOERROR, NXDOMAIN, SERVFAIL).

Step-by-Step Usage Guide

Enter Domain Name: Type any domain (e.g., example.com or mail.google.com).
Select Record Type & Resolver: Choose which record type to look up and select your preferred DoH resolver.
Inspect & Copy Results: View formatted TTL and IP target data or toggle raw JSON output.

Frequently Asked Questions (FAQ)

What is DNS over HTTPS (DoH)?: DNS over HTTPS (DoH) is an IETF standard protocol (RFC 8484) that encrypts DNS queries via HTTPS, protecting your browsing and lookup privacy from eavesdropping and man-in-the-middle tampering.
Why do different resolvers show different TTLs?: Time-To-Live (TTL) values decrease every second as records sit in a recursive resolver cache. Resolvers that answered recent queries will report a lower remaining TTL than authoritative servers.