Network Fingerprint - What Your Connection Reveals

Every site you visit sees your network, not just your browser. Below is your own network fingerprint - the public IP, network operator (ASN), organization, reverse DNS and connection traits that together identify the network you are browsing from. The IP-based details come from a standard geolocation lookup of your public IP; the connection traits are read in your own browser. There is no sign-in, and no personal profile is built.

Your Network Fingerprint

IPv4
Public IP (IPv4)
216.73.217.177
Reverse DNS (PTR)
None published
Network / ASN
AS16509 Amazon.com, Inc.
Organization
Anthropic, PBC
ISP
Amazon.com
Approx. location
Columbus, United States
Connection type
Checking…
Estimated downlink
Checking…
Estimated latency (RTT)
Checking…

Your browser can also leak your local/private IP addresses over WebRTC — check that separately with the WebRTC Leak Test.

Understanding This Tool

What It Does

This tool reads your own network fingerprint - the bundle of network-level details that every website you visit can already see about the connection you are browsing from. On page load it determines your public IP (from the request your browser sent), works out whether it is IPv4 or IPv6, and looks up the reverse DNS name. For normal public connections it sends your public IP to a standard IP geolocation service to resolve your network operator (ASN), organization, ISP and approximate city/country. Your browser then adds three connection hints - the rough connection type, an estimated download speed and an estimated latency - where it chooses to expose them. There is no scanning of you or your network, no active probing, and no input required.

Understanding the Results

  • Public IP: The address your browser presents to the internet right now, taken from the current request, and labelled with its version - IPv4 (the classic dotted form like 203.0.113.5) or IPv6 (the longer colon-separated form). If you use a VPN or proxy, this is the exit address it gives you, not your home address.
  • Reverse DNS (PTR): The hostname your IP points back to, if your network operator has published one (for example a name ending in your ISP's domain). It often hints at your provider or region. When no PTR record exists it shows "None published" - that is normal and not a problem.
  • Network / ASN: Your network operator - the autonomous system that routes your traffic, shown by its AS name (with the AS number as a fallback). This is the entity that actually carries your packets, such as your ISP, mobile carrier, or VPN provider.
  • Organization: The organization the IP block is registered to. It usually matches your ISP or carrier, but on corporate, hosting, or VPN ranges it can name a different entity.
  • ISP: The internet service provider associated with the IP. On a VPN this typically reads as the VPN/hosting company rather than your home ISP.
  • Approx. location: An approximate city and country derived from a geolocation database, not from GPS. It is a best guess for the IP and can be off by a city, a region, or sometimes a country - treat it as rough, not exact.
  • Connection type: A coarse label your browser reports (such as 4G), surfaced through the Network Information API. It describes the effective class of connection, not your exact technology, and shows "Not exposed by this browser" when your browser does not provide it.
  • Estimated downlink: A browser-supplied estimate of your download bandwidth in Mbps. It is an estimate, not a measured speed test, and reads "Not exposed by this browser" where unavailable.
  • Estimated latency (RTT): A browser-supplied estimate of round-trip time in milliseconds. Like the other connection figures it is an estimate the browser may round or withhold, showing "Not exposed by this browser" when it does.

Common Use Cases

  • See what a site learns from your connection: Get a plain view of the IP, network operator, organization and location any website can read about you the moment you arrive, with no extra tracking required.
  • Confirm your VPN is working: Check that your apparent IP, ASN, organization and ISP have switched to the VPN's network rather than your home provider - a quick sanity check that the tunnel is actually in use.
  • Identify your ISP or carrier: Find out which network operator (ASN) and ISP your traffic is attributed to, handy when troubleshooting with support or verifying a new connection.
  • Spot CGNAT or proxy situations: If the organization or ISP string reads like a carrier-grade NAT range, a hosting company, or an unexpected proxy, that can be a hint your connection is shared or relayed rather than coming straight from your own line. The tool does not detect or flag this for you - it simply shows the registered org/ISP for you to interpret.
  • Compare networks side by side: Open the tool on Wi-Fi, then on mobile data or a different VPN region, and see how the IP version, ASN, organization and approximate location change between them.

Pro Tips & Best Practices

  • A VPN changes the IP-derived fields, not the browser hints: Connecting through a VPN updates your public IP, ASN, organization, ISP and location, but the connection type, downlink and latency come from your browser and reflect your real device link.
  • Firefox and Safari hide the connection metrics: The Network Information API behind connection type, downlink and latency is mainly a Chromium feature, so on Firefox and Safari those rows usually read "Not exposed by this browser." That is expected, not an error.
  • Reverse DNS is set by the network operator: Whether a PTR record exists, and what it says, is controlled by your ISP or hosting provider - not by you - so "None published" simply means they did not configure one.
  • Local IPs leak separately over WebRTC: This page reports your public network details. To check whether your browser also exposes your local/private IP addresses, run the separate WebRTC Leak Test.

Frequently Asked Questions

A network fingerprint is the set of network-level attributes your connection reveals - your public IP, network operator (ASN), organization, ISP, reverse DNS, and a few browser-reported connection traits. It describes the network you browse from. A browser fingerprint is different: it combines device and browser details like fonts, screen size, and canvas rendering to recognize a specific browser. This tool only looks at network-level information. It does not perform any browser, canvas, or operating-system fingerprinting.

No. It shows the network you are connected through - your ISP, network operator, organization, an approximate city, and your public IP - which point to a provider and a general area, not to you as an individual. The location is an approximate database guess, not your exact address, and the tool does not build any unique score or personal profile. It only displays attributes that any website you visit can already see.

Connection type, estimated downlink, and estimated latency come from the browser's Network Information API, which only some browsers (mainly Chromium-based ones like Chrome and Edge) provide. Browsers such as Firefox and Safari deliberately do not expose it, so those fields show "Not exposed by this browser." When they are shown, they are the browser's own estimates, not a measured speed test.

Yes, for the IP-based fields. Through a VPN your public IP, ASN, organization, ISP, and approximate location reflect the VPN's exit server rather than your home connection, which is a good way to confirm the VPN is active. The browser-reported connection hints (type, downlink, latency) are not affected by the VPN, because they describe your device's actual link. Note that your browser can still leak local IPs over WebRTC - check that with the separate WebRTC Leak Test.

The tool requires no input and does not ask you to sign in or build any personal profile, and the page itself is served with no-store headers so the result page is not cached in your browser. To resolve your ASN, organization, ISP, and location it does send your public IP to a standard IP geolocation service, the same kind of lookup any IP information service makes, and that result is briefly cached on our server (keyed by IP, for up to 24 hours) to avoid repeat calls. That is a short-lived performance cache, not a per-user profile. There is no port scanning, device discovery, or active probing of your connection.

Frequently Asked Questions

What is a network fingerprint, and how is it different from a browser fingerprint?
A network fingerprint is the set of network-level attributes your connection reveals - your public IP, network operator (ASN), organization, ISP, reverse DNS, and a few browser-reported connection traits. It describes the network you browse from. A browser fingerprint is different: it combines device and browser details like fonts, screen size, and canvas rendering to recognize a specific browser. This tool only looks at network-level information. It does not perform any browser, canvas, or operating-system fingerprinting.
Can this tool identify me personally?
No. It shows the network you are connected through - your ISP, network operator, organization, an approximate city, and your public IP - which point to a provider and a general area, not to you as an individual. The location is an approximate database guess, not your exact address, and the tool does not build any unique score or personal profile. It only displays attributes that any website you visit can already see.
Why do the connection metrics say "Not exposed by this browser"?
Connection type, estimated downlink, and estimated latency come from the browser's Network Information API, which only some browsers (mainly Chromium-based ones like Chrome and Edge) provide. Browsers such as Firefox and Safari deliberately do not expose it, so those fields show "Not exposed by this browser." When they are shown, they are the browser's own estimates, not a measured speed test.
Does using a VPN change what this tool shows?
Yes, for the IP-based fields. Through a VPN your public IP, ASN, organization, ISP, and approximate location reflect the VPN's exit server rather than your home connection, which is a good way to confirm the VPN is active. The browser-reported connection hints (type, downlink, latency) are not affected by the VPN, because they describe your device's actual link. Note that your browser can still leak local IPs over WebRTC - check that with the separate WebRTC Leak Test.
Is anything stored when I use this tool?
The tool requires no input and does not ask you to sign in or build any personal profile, and the page itself is served with no-store headers so the result page is not cached in your browser. To resolve your ASN, organization, ISP, and location it does send your public IP to a standard IP geolocation service, the same kind of lookup any IP information service makes, and that result is briefly cached on our server (keyed by IP, for up to 24 hours) to avoid repeat calls. That is a short-lived performance cache, not a per-user profile. There is no port scanning, device discovery, or active probing of your connection.
Last reviewed: Reviewed by the

How this tool works: This tool runs in your browser and on our server in real time. Depending on the tool, results are computed directly from the input you provide or retrieved from live, authoritative data sources at the moment you run a lookup. We do not sell your data, and your lookups are kept private — any history shown here is stored only on your device.

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