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Hosting Checker

Free, no signup. See which public network and edge platform a domain exposes — and the specific DNS or response-header evidence for it.

Built by Patrick Stox

Checks run from our server; we fetch the URL you enter and don't keep the results. This queries public DNS and makes one public web request. A CDN or reverse proxy can hide the origin provider; this tool never treats edge evidence as proof of the origin. Anonymous run-level outcome counters may be used for aggregate research; URLs, domains, IPs, and identifiers are never included, and no statistic is released below 100 runs.

Feedback
Report a bug

Found something broken in Hosting Checker? Let us know what happened — this goes straight to a private triage queue, not a public list.

What will be sent 
 No tool inputs, uploads, pasted source, complete results, query parameters, or URL fragments are attached automatically. You can edit or remove the selected passage above. Browser and anti-abuse metadata is processed for spam prevention. 
  
 
  
 
 
  
 
 
  
 
Sample report
Illustrative example — fixed public signals, not a domain lookup
Cloudflare is proxying this site; the origin host is not visible from this public check.
  • Evidence: server: cloudflare and cf-ray were present.
  • IP & network: the displayed addresses belong to the public edge network.
  • DNS & mail: an MX answer is listed separately and is not called the web host.
  • Transfer: Content-Encoding: br means Brotli was observed on this response.
 
 
 
How to use it
  1. Enter a bare domain such as example.com.
  2. Choose Check hosting and read the delivery verdict with its evidence.
  3. Separate the observed IP network, CNAME, and response-header fingerprints from the mail-host MX records.
  4. If a proxy is detected, treat the origin as unknown unless you can verify it through your own account or configuration.
 
 
     
 Local data 
Saved targets, named lists, and recent check summaries remain only in this browser.
 
   
 
     
How to read the result
  • Delivery verdict summarizes the strongest supported edge or ASN evidence.
  • Origin not visible means a proxy or edge platform terminates the public request.
  • IP network is the ASN organization for the observed A/AAAA address, not necessarily the hosting brand.
  • CNAME and MX are raw public DNS answers; MX describes email.
 
Data sources & freshness
The endpoint performs bounded public A/AAAA, CNAME, and MX lookups and one web request. Team Cymru ASN DNS data enriches observed IPs with network organization, registry, and country. A deterministic fingerprint table checks selected headers and CNAMEs for supported edge platforms, while transfer inspection reports compression and only documented protocol hints.
 
Features
  • Public IP, ASN, CNAME, and MX evidence in one report.
  • Supported CDN and edge fingerprints from DNS and headers.
  • Compression and protocol-hint summary.
  • Explicit distinction between delivery network, origin host, and mail host.
 
Limitations
A Cloudflare, Fastly, or similar result describes the public edge and may conceal the origin. ASN country is not a physical server location. Private DNS, multi-CDN routing, geographic answers, reseller relationships, and infrastructure without a supported fingerprint can make the picture incomplete.
 
Frequently asked questions
Can a hosting checker identify the origin host behind Cloudflare?
Usually not. A reverse proxy publishes its own edge IPs and headers while deliberately hiding the origin. The checker reports Cloudflare as the delivery layer and leaves the origin unclaimed.
Is the reported country the server location?
No. Country and registry values come from public ASN data for the observed IP network. They are not proof of the physical datacenter, origin server, or where site data is stored.
Why does the tool show a CDN instead of my web host?
Public DNS and HTTP requests terminate at the CDN or edge proxy when one is configured. That is the infrastructure visible to visitors; the underlying host may not expose a public fingerprint.
Does the MX record show who hosts the website?
No. MX records describe mail delivery. The report lists them separately because email and web hosting are often provided by different companies.
Next stepHTTP Header Checker — verify it with a direct check.

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Feature requests for Hosting Checker
 

Upvote what you want most. New ideas can be submitted from the floating Feedback menu;
      requests appear here once approved, and the most-wanted rise to the top.

   
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Über das Tool
Ermittle öffentliche IP-, ASN-, CNAME- und MX-Evidenz sowie CDN-/Edge-Fingerabdrücke, Kompression und dokumentierte Protokollhinweise. Der Bericht trennt Delivery-Netz, Origin-Host und Mail-Host und zeigt die Belege hinter jedem Schluss.
Ein Proxy oder Edge kann den Origin verbergen; die Ausgabe behauptet ihn nicht ohne eigene Verifikation.
Funktionen
  • Öffentliche IP-, ASN-, CNAME- und MX-Evidenz in einem Bericht
  • Unterstützte CDN- und Edge-Fingerabdrücke aus DNS und Headern
  • Zusammenfassung von Kompression und Protokoll-Hinweisen
  • Explizite Trennung von Delivery-Netz, Origin-Host und Mail-Host
Funktionsweise
Der Endpoint führt begrenzte öffentliche A/AAAA-, CNAME- und MX-Abfragen sowie einen Web-Request aus. Team-Cymru-ASN-DNS-Daten reichern beobachtete IPs mit Netzwerkorganisation, Registry und Land an; eine deterministische Fingerabdrucktabelle prüft ausgewählte Header und CNAMEs.
Einschränkungen
  • Ein Cloudflare-, Fastly- oder ähnliches Ergebnis beschreibt den öffentlichen Edge und kann den Origin verbergen.
  • Das ASN-Land ist kein physischer Serverstandort; private DNS-Daten, Multi-CDN-Routing, geografische Antworten und nicht unterstützte Fingerabdrücke können das Bild unvollständig machen.
  • MX-Records beschreiben Mailzustellung und zeigen nicht, wer die Website hostet.
Häufig gestellte Fragen
Wie lese ich das Ergebnis?
Das Delivery-Urteil fasst die stärkste unterstützte Edge- oder ASN-Evidenz zusammen. „Origin nicht sichtbar“ bedeutet, dass ein Proxy oder Edge die öffentliche Anfrage beendet; die IP-Organisation ist nicht zwingend die Hosting-Marke.
Kann der Prüfer den Origin hinter Cloudflare erkennen?
Meistens nicht. Ein Reverse-Proxy veröffentlicht eigene Edge-IP-Adressen und Header und verbirgt absichtlich den Origin. Der Bericht weist Cloudflare als Delivery-Schicht aus und lässt den Origin offen.
Zeigt der MX-Record, wer die Website hostet?
Nein. MX-Records beschreiben Mailzustellung. Sie werden getrennt aufgeführt, weil E-Mail- und Webhosting oft von verschiedenen Unternehmen bereitgestellt werden.
Ist das gemeldete Land der Serverstandort?
Nein. Land und Registry stammen aus öffentlichen ASN-Daten zum beobachteten IP-Netz. Sie beweisen weder Rechenzentrumsstandort, Origin-Server noch den Speicherort von Website-Daten.