Online Traceroute
Trace your AS-level network path from your device to the edge. See every autonomous system and transit provider your traffic crosses.
How Traceroute Works
Your Connection
Your device connects to your ISP, which assigns you an IP address and routes your traffic onto the internet.
ISP Network
Your traffic enters your ISP's autonomous system (AS), where it is routed through their internal network infrastructure.
Transit Providers
Data crosses peering points and transit networks, passing through one or more intermediate autonomous systems along the way.
Edge Server
Your request arrives at the destination network's edge server, completing the route across the internet.
Understanding Your Results
Each row in the traceroute output represents a network your traffic passes through. Here is what each column means.
| Column | Description | Example |
|---|---|---|
| Hop | The position of this network in the path, starting from your device | 1, 2, 3 |
| AS Number | The unique identifier for the autonomous system that operates this network | AS13335 |
| Organization | The name of the company or provider that owns and operates this AS | Cloudflare, Inc. |
| Confidence Level | How certain the tool is about the identified path based on available routing data | High, Medium, Low |
Traceroute FAQ
What is a traceroute?
A traceroute is a network diagnostic tool that maps the path your data takes from your device to a destination server. It identifies each network hop along the way, showing which autonomous systems and transit providers your traffic passes through. This helps you understand your internet routing and diagnose connectivity issues.
What is an AS (Autonomous System) number?
An AS (Autonomous System) number is a unique identifier assigned to a network or group of networks operated by a single organization. Every ISP, cloud provider, and large enterprise has one or more AS numbers. When you run a traceroute, the AS numbers reveal which organizations handle your traffic at each step of the journey.
Why do I see multiple hops in my traceroute?
Multiple hops appear because your data typically crosses several networks to reach its destination. Your traffic starts at your ISP, then may pass through one or more transit providers or internet exchange points before arriving at the destination network. Each of these network boundaries represents a hop in the traceroute.
How is this different from a command-line traceroute?
A command-line traceroute (tracert on Windows, traceroute on macOS/Linux) shows individual router IP addresses and latency at each hop. Our tool maps the path at the AS level, showing which organizations and networks your traffic crosses rather than individual routers. This gives you a clearer picture of your internet routing topology.
What does the confidence level mean in results?
The confidence level indicates how certain the tool is about the identified network path. High confidence means the AS path data is well corroborated by multiple sources. Medium or lower confidence may appear when routing data is ambiguous or when the path includes networks with limited public routing information.
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