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Hosting lookup·provider · ASN · datacenters · latency

Where in the world is your domain?

Identify any domain's hosting provider, IP, ASN, CDN, mail and DNS services — then see the global datacenter footprint and latency from 10 probe locations.

10 global probes
ASN + IP intelligence
Enter a domain to discover its hosting provider.
Try github.com, linear.app, or your own domain.
What you get

The infrastructure, fully decoded.

A single lookup reveals not just the host, but the entire stack — provider, network, server, datacenters and global latency.

Provider fingerprinting

Detect the hosting platform from IP ranges, ASN, and HTTP headers — Cloudflare, AWS, Vercel, Netlify, Azure, GCP, Fastly and more.

Datacenter map

See every edge location your provider operates worldwide on an interactive map — with primary edge highlighted and peer datacenters connected.

10 global probes

Latency and TTFB measured from New York, San Francisco, London, Frankfurt, Mumbai, Singapore, Tokyo, Sydney, São Paulo and Cape Town.

Full service stack

Beyond hosting: we surface the CDN, DNS provider, mail service, SSL issuer and web server — the entire infrastructure picture in one view.

Stop second-guessing.

Find your domain in the next 30 seconds.

Free forever. No login required. 1,100+ TLDs in one query — plus AI suggestions and the premium marketplace.

Start checking now Learn more
1,147
TLDs
200ms
Avg lookup
100
Suggestions/query
FAQ

Hosting, demystified.

We resolve the domain to its IP address, then match that IP against known network ranges and ASN (Autonomous System Number) records published by major providers. Most large hosts — AWS, Cloudflare, Vercel, Google Cloud — publish their CIDR blocks publicly, which lets us map any IP to its operator with high confidence.
An ASN is a unique number assigned to networks that exchange routing information on the public internet. AS13335 is Cloudflare, AS16509 is Amazon, AS15169 is Google. Knowing the ASN tells you who actually owns the IP space — useful when a site is fronted by a CDN but ultimately served from somewhere else.
Cloudflare and other CDNs proxy traffic in front of your origin server. The public IP belongs to the CDN; your real host (DigitalOcean, Hetzner, etc.) sits behind it. We surface both layers when possible — but if the CDN is in "proxied" mode, the origin is intentionally hidden.
Our probes measure TTFB (time to first byte) from 10 globally distributed datacenters. Latency reflects network round-trip plus server processing time. Results are representative — actual end-user latency depends on their ISP, the route their traffic takes, and local network conditions.
A host runs the actual application — your code, database, files. A CDN caches static content at edge locations close to users to speed up delivery. Many modern sites combine both: an origin host (e.g. AWS) behind a CDN (e.g. Cloudflare) for the best of speed and control.
This tool shows current state only. For historical infrastructure tracking — knowing when a domain migrated from one host to another — you would need a service that snapshots DNS and IP records over time. We may add this as a Pro feature.