Website hosting checker

Find who hosts any site with this free website hosting checker. Paste a URL to see the provider, IP, and network details. No signup needed.

How the website hosting checker works

You type in a domain. The tool runs a DNS lookup to grab the A and AAAA records. This gives us the raw IP addresses. We then query Border Gateway Protocol routing tables. Every IP block on the internet belongs to an Autonomous System Number. The ASN maps directly to the organization that owns the physical servers.

You get the exact network owner back. This is not a guess based on HTTP headers. Header strings are easily spoofed or stripped by proxies. ASN data is registered with regional internet registries. It is the ground truth for network ownership. When a network advertises a route, it claims ownership of that prefix.

• The registered organization name for the IP block.
• The resolved IPv4 and IPv6 addresses.
• The Autonomous System Number and its public description.

When you need to find who hosts a website

Developers use this when migrating infrastructure. You might want to know if a competitor runs on AWS or Google Cloud before pitching a similar stack. It also helps when troubleshooting latency. If a user in Europe reports slow load times, checking the host IP confirms whether the origin server is actually in a European data center. Sometimes you just need to verify data residency requirements by confirming the physical location of the IP block.

Vendor verification is another common use case. A client might claim their application is hosted on a specific premium cloud provider. The ASN data will quickly prove them right or wrong. This saves you from building assumptions on top of incorrect infrastructure claims. You get facts instead of marketing pitches.

Limits of the online Website hosting checker

Content delivery networks complicate everything. If a site routes traffic through Cloudflare or Fastly, the resolved IP belongs to the CDN. The tool will correctly report the CDN as the host. It cannot see the origin server hidden behind the proxy. Anycast routing means the same IP resolves to different physical data centers depending on where you run the lookup from. You will need to check the DNS history or look for specific origin headers to find the real backend.

Shared hosting and reseller agreements also muddy the waters. A white label hosting brand might just resolve to the parent company ASN. You will see the massive infrastructure provider instead of the boutique brand name you recognize. The network data is accurate, but the business relationship is opaque.

How to use the website hosting checker

1. Paste the target domain or full URL into the input field.
2. Click the check button to trigger the DNS and network lookup.
3. Read the returned organization name to identify the primary hosting provider.
4. Note the IP address and ASN for further network troubleshooting if needed.

Common hosting indicators and what they mean

Use this reference to interpret the network data returned by the lookup.

Frequently asked questions

Is this website hosting checker completely free?

Yes. You can run as many lookups as you need without creating an account or paying a fee.

Why does the result show Cloudflare instead of the actual host?

The site routes its traffic through the Cloudflare proxy network. The tool accurately reports the IP owner, which is Cloudflare, but it cannot see the origin server hidden behind the CDN.

How accurate is the hosting provider name?

The ASN data is highly accurate because it comes directly from regional internet registries. However, if a company uses a reseller, you might see the parent infrastructure provider instead of the brand name you recognize.

Can I check multiple domains at once?

No. You need to enter one URL or domain per lookup. Run them sequentially if you have a list to check.