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More than 5 sources of open information!

All tools in one place

Check availability, latency and routing of websites, servers and IP addresses from different locations.

Why check-host.org

One request — the full picture of who owns an address, where it is located and how it is reachable.

  • Five geolocation databases

    DB-IP, MaxMind, IP2Location, IPinfo, IPtoASN and regional registries side by side — see where the sources agree and where they differ.

  • ASN and network owner

    The autonomous system, ISP and IP range show which network actually announces the address and serves the domain.

  • Checks from many countries

    Ping, HTTP, ports and DNS run from nodes around the world, so you see availability the way your users do.

Latest news

Updates and announcements of the service.

New

check-host.org now speaks 40 languages and has a dark theme

The whole site, including tool guides and legal pages, is now available in 40 languages. A dark theme follows your system settings and can be switched in the header.

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How to read traceroute and MTR results

What hops, loss and response times mean in traceroute and MTR, why loss on a middle hop is often not a problem, and how to find where packets really get lost.

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How to check if a website is down for everyone or just for you

A website does not open — is it down for everyone or only for you? A step-by-step check with HTTP, ping, DNS and traceroute from 25 locations around the world.

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All news

Data sources

IP info compares independent open databases.