Instant intelligence for domains, IPs & HTTP • fast • shareable • developer-first

Site Info Check tools

Analyze DNS, IP addresses, HTTP behavior, and domain WHOIS instantly — with clean outputs that are easy to understand, export, and share with your team.

Free
Core tools
JSON
Consistent output
TLS
Security insights
Fast
Minimal friction
Live-style preview
Example output highlights
HTTP and SSL posture
Headers, redirects, HSTS, cookies, TLS chain & more.
Domain identity
WHOIS metadata, registrar, nameservers, status codes.
Network context
IP geodata, ASN/ISP, reverse DNS, risk signals (where available).
Tip
Build reports faster by copying the output blocks into tickets, docs, or incident notes.

Core Tools

Purpose-built modules with clear results, thoughtful UI, and consistent fields.

Pro UX: fast feedback • predictable outputs • readable errors
Network

IP Info

Geolocation, ISP/organization, ASN context, reverse DNS, and quick signals that help you triage faster.

Open IP Info →
IPv4 • IPv6
Web

HTTP Info

Headers, security headers, redirect chains, cookies, HTTP versions, and TLS/certificate insights.

Open HTTP Info →
Headers • TLS • Status
Domain

Domain Info

Registrar, creation/expiry dates, nameservers, statuses, and registration footprint.

Open Domain Info →
Registrar • NS • Dates
Network

What's My IP

Your current public IP address and quick network context.

Network

Hostname To IP

Get IP from hostname and DNS insights right away.

Open Hostname To IP →
IPv4 • IPv6 • DNS

How it works

A simple flow designed for speed — with clean outputs and clear failure states.

1
Enter a target
Domain, URL, IPv4 or IPv6 (depending on the tool).
2
We query multiple sources
Network, DNS, headers, TLS chain, WHOIS — where applicable.
3
You get a readable report
Well-structured sections + consistent fields + share-ready output.

Designed for real workflows

Incident response

Quickly check redirects, TLS posture, and domain footprint when you’re triaging alerts.

Security reviews

Verify security headers, cookie flags, and certificate chain details in one place.

Dev debugging

Confirm server behavior, caching headers, and HTTP versions without extra tooling.

Support & ops

Identify DNS/registrar changes and share results with customers or internal teams.

Ready when you are
Start with the tool you need — in seconds.

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Whether you’re debugging, investigating, or documenting — Site Info Check keeps the signal high and the noise low.

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