About ns.lol

ns.lol is a fast, API-first DNS toolkit built for developers who live in the terminal.

What it does

Queries any domain for its complete DNS configuration in under a second: all record types, propagation across 17 global resolvers, zone health grading, email DNS auditing (SPF, DKIM, DMARC, MTA-STS, DANE), and security analysis (DNSSEC, CAA, dangling records, NS diversity).

How it works

curl https://ns.lol/example.com | jq

Same URL, content-negotiated. curl gets JSON, your browser gets a formatted report. No API keys, no accounts, no tracking.

Philosophy

API-first — every endpoint returns JSON by default for CLI tools, dig-style plain text, or HTML for browsers
No accounts — no signups, no API keys, no tracking pixels, no third-party scripts
Self-hostable — open source, run it yourself for unlimited usage
CLI included — same engine, runs locally with zero rate limits. Install the CLI

Infrastructure

Built on Cloudflare Workers (global edge) with dedicated Fly.io probes in US-West and EU for real UDP propagation queries. 17 public DNS resolvers queried in parallel.

Built by

ns.lol is part of the .lol family — free developer tools for DNS, TLS, and domain intelligence.

ns.lol — DNS toolkit (you are here)
certs.lol — TLS/SSL certificate scanner
yoke.lol — Full domain intelligence dashboard