Free Hosting Lookup Tool·Provider · IP · ASN · CDN · Latency

Website hosting lookup: who hosts this site?

Instantly find who hosts any website. Identify hosting providers, server IP addresses, ASN details, CDN networks, and mail servers — with global datacenter latency tested from 10 locations.

10 global probes
ASN + IP intelligence
Enter a domain to discover its hosting provider.
Try github.com, linear.app, or your own domain.
INFRASTRUCTURE & HOSTING ANALYSIS

Web infrastructure, fully decoded.

A single lookup reveals the complete technology stack — web host provider, ASN network, server location, CDN, and real-time global latency.

Hosting provider fingerprinting

Identify web hosting platforms instantly via IP ranges, ASN, and HTTP headers — supporting Cloudflare, AWS, Vercel, Netlify, Azure, GCP, Fastly, and more.

Interactive datacenter location map

Visualize global edge locations and datacenter footprints on an interactive map — easily spot primary server hosts and connected peer datacenters.

10 global ping & TTFB probes

Measure website latency and Time to First Byte (TTFB) simultaneously from New York, London, Frankfurt, Singapore, Tokyo, Sydney, and 4 other global probes.

Complete web infrastructure stack

Beyond web hosting: automatically surface CDN networks, DNS providers, mail servers, SSL certificate issuers, and web server software in a single audit.

FAQ

Website hosting & infrastructure, explained.

We resolve the domain name to its target IP address and match it against IP CIDR blocks and ASN (Autonomous System Number) data published by cloud providers. Major hosts like AWS, Cloudflare, Vercel, and Google Cloud are mapped with high accuracy.
An Autonomous System Number (ASN) identifies the network operator managing a set of IP addresses. For example, AS13335 is Cloudflare and AS16509 is Amazon. Checking the ASN reveals who actually owns the underlying server network.
Reverse proxies and CDNs like Cloudflare mask origin server IP addresses for security and performance. When proxied, the public IP belongs to the CDN provider, intentionally hiding the underlying host (such as DigitalOcean or Hetzner).
Our hosting lookup tool tests Time to First Byte (TTFB) and network response times from 10 globally distributed datacenters. This provides a clear baseline of origin server performance across different geographical regions.
Web hosting stores and executes your application code, databases, and server logic. A Content Delivery Network (CDN) caches static assets across global edge servers to accelerate content delivery and reduce load on the main origin host.
This lookup tool provides real-time infrastructure data. Historical hosting tracking and DNS migration logs require periodic snapshot indexing, which is planned for upcoming advanced tool features.