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check-host.hostrainbow.in
● 60+ locations monitoring right now

Check if a website, server, or port is really down — from everywhere.

A free hosting checker that runs real ping, HTTP, TCP, UDP, and DNS tests from dozens of independent global nodes, so you know whether it's down for everyone or just down for you.

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No signup required Real checks, real nodes Free, forever
dispatching check to global nodes…

Diagnose it step by step

Start broad and narrow down: look up the IP and its owner, confirm the domain and DNS are healthy, then work down the stack to ping, HTTP, and specific ports. Jump to any step directly if you already know what you're checking.

1Geo + ASN

IP / domain info lookup

Start here — enter any IP or domain and see geolocation, ISP, ASN, and VPN/proxy/Tor/hosting flags in one click.
2RDAP

WHOIS lookup

Check who owns the domain, when it was registered, and when it expires.
3Resolver

DNS checker

Confirm it resolves correctly — look up A, AAAA, MX, TXT, NS, CNAME, or SOA records worldwide.
4ICMP

Ping test

Measure latency and packet loss to the host from multiple countries at once.
5Layer 7

Website / HTTP checker

Confirm the site actually loads, and see its status code and response time globally.
6Layer 4

TCP port checker

Verify a specific port — SSH, MySQL, a custom API — accepts connections.
7Layer 4

UDP port checker

Check UDP services like DNS, VoIP, or game servers for a response.

Built for hosting providers and the people they support

HostRainbow runs and maintains this tool the same way it runs its own hosting infrastructure — reliable, transparent, and fast to answer one question.

Global vantage points

Checks fan out to dozens of independent monitoring nodes across continents, not just one data center.

Real-time results

Each node reports back live as its check completes — no waiting on a batch job or a cached snapshot.

No account, no tracking pixels

Run a check and read the result. Nothing is saved to an account because there isn't one.

Every common protocol

Ping, HTTP, TCP, UDP and DNS in one interface instead of five separate tools.

Frequently asked questions

What does this host checker actually test?
It dispatches real ping (ICMP), HTTP, TCP, UDP, or DNS checks from dozens of independent monitoring nodes around the world, then reports the response time, status, and resolved IP from each location — so you can tell whether a site or server is down everywhere or just from your own connection.
Is this hosting checker free to use?
Yes. Running a ping test, HTTP check, TCP or UDP port check, or DNS lookup is free and doesn't require an account.
How do I check if a website is down for everyone or just me?
Run an HTTP check on the domain. If nodes in multiple countries report a failed connection or a bad status code, the site is down globally rather than blocked or slow on your own network.
How do I test if a port is open on my server?
Use the TCP check, enter your server's hostname or IP and the port number (for example 443 for HTTPS or 22 for SSH), and run the test. A successful handshake from a node means the port is open and reachable from the public internet.
Why do results differ between locations?
Latency, routing, firewall rules, DNS propagation, and regional blocks can all cause a host to respond differently depending on where the check is performed from — which is exactly why checking from a single node in your own browser isn't reliable on its own.
How do I look up the details of an IP address or domain?
Use the IP / Domain Info tab. It returns geolocation (country, region, city, timezone), the ASN and network owner, and privacy flags such as VPN, proxy, Tor exit node, and hosting/datacenter detection, all from one lookup.
Can I check who owns a domain or when it expires?
Yes — use the WHOIS tab. It returns the RDAP record for the domain, including its registration and expiry dates, current status codes, nameservers, and DNSSEC status.