# IPCheck.ing

> Open-source IP toolbox: lookup, connectivity tests, WebRTC and DNS leak detection, speed test, MTR, Whois, ASN history, and browser fingerprint.

## Tools

- [IP Lookup](https://ipcheck.ing/tools/#ip-lookup): Show your public IPv4 and IPv6 addresses with ASN, geolocation, and ISP organization, sourced from multiple providers in parallel.
- [Query Any IP](https://ipcheck.ing/tools/#query-any-ip): Look up ASN, geolocation, and organization for any IPv4 or IPv6 address — not just your own.
- [Connectivity Test](https://ipcheck.ing/tools/#connectivity-test): Test whether common global services (Google, Cloudflare, GitHub, OpenAI, etc.) are reachable from your network.
- [WebRTC Leak Test](https://ipcheck.ing/tools/#webrtc-leak-test): Detect IPv4 and IPv6 addresses leaked by your browser through WebRTC, including local network addresses.
- [DNS Leak Test](https://ipcheck.ing/tools/#dns-leak-test): Identify which DNS resolvers your traffic actually uses by triggering lookups against unique test domains.
- [Speed Test](https://ipcheck.ing/tools/#speed-test): Measure download, upload, latency, and jitter against the Cloudflare speedtest backend.
- [Global Ping Test](https://ipcheck.ing/tools/#ping-test): Ping a host from multiple Globalping probes worldwide to see latency from different regions.
- [Global MTR Test](https://ipcheck.ing/tools/#mtr-test): Run an MTR (combined traceroute and ping) from multiple Globalping probes worldwide.
- [Proxy Rule Test](https://ipcheck.ing/tools/#rule-test): Test which proxy rule a given domain or IP would match in rule-based clients (Clash, sing-box, Surge style).
- [DNS Resolver](https://ipcheck.ing/tools/#dns-resolver): Query DNS records (A, AAAA, MX, TXT, NS, CNAME) for any domain across multiple resolvers in parallel.
- [Censorship Check](https://ipcheck.ing/tools/#censorship-check): Test whether a website is reachable from regions with known internet restrictions.
- [Whois Lookup](https://ipcheck.ing/tools/#whois): WHOIS / RDAP lookup for domains and IPs, with automatic RDAP fallback for new gTLDs.
- [MAC Vendor Lookup](https://ipcheck.ing/tools/#mac-vendor-lookup): Look up the manufacturer (OUI) for a MAC address.
- [Browser Info](https://ipcheck.ing/tools/#browser-info): Show your browser fingerprint: user agent, languages, timezone, GPU, screen, and stable fingerprint hash.
- [Online Security Checklist](https://ipcheck.ing/tools/#security-checklist): Interactive checklist of personal online privacy and security hygiene items, with progress tracking.
- [Invisibility Test](https://ipcheck.ing/tools/#invisibility-test): Run a battery of proxy- and VPN-detection checks against your connection and score how identifiable your disguise looks to a website.
- [Service Status](https://ipcheck.ing/tools/#service-status): Check the live operational status of popular services (Claude, OpenAI, Cursor, Notion, GitHub, Cloudflare, ElevenLabs, LangChain) in one place.
- [In-depth DNS Leak Test](https://ipcheck.ing/tools/#in-depth-dns-leak-test): Capture every recursive resolver exit IP your browser actually uses (typically 20–40 per run), with EDNS Client Subnet (ECS) and DNSSEC support analysis.

## Resources

- Source code: https://github.com/jason5ng32/MyIP
- Languages: en, zh, fr, tr
- Full content for AI agents: https://ipcheck.ing/llms-full.txt