FREE ROUTE DIAGNOSTICNetwork Tools

Free Traceroute Tool & Shareable Network Report

Trace packet paths across global internet routers. Measure intermediate hop latency, detect packet loss, and generate branded shareable PDF network reports.

Quick Definition

Traceroute is a network diagnostic utility that records the route (the specific gateway routers and peering points) traversed by packets across an IP network, measuring the round-trip latency incurred at each consecutive hop from probe source to destination.

Cloud Traceroute & Route Inspector

Uzvera Cloud Probe
๐ŸŒ Probe Location Notice: This public traceroute originates from Uzvera's cloud infrastructure probe location, measuring network route hops and latency between Uzvera's data center and the destination host.
Quick test:
REMOTE AGENT TRACEROUTE

Need to run traceroute from an actual client computer?

Uzvera Desktop allows technicians to execute traceroutes, ping probes, and speed tests directly from customer endpoints and publish branded reports back to your management dashboard.

NETWORK ROUTING GUIDE

How Network Routing and Traceroute Work

The engineering principles of TTL decrements, ICMP time exceeded packets, and asymmetric internet routing.

The Mechanics of Time-To-Live (TTL) Probing

When an IP packet enters the internet, its header contains an 8-bit integer called Time-To-Live (TTL). Every router that forwards the packet decrements the TTL by 1. If TTL hits 0, the router discards the packet to prevent infinite routing loops and transmits an ICMP Type 11 (Time Exceeded) message back to the sender.

Traceroute exploits this behavior methodically:

  1. It sends a packet with TTL = 1. The first gateway router drops it and replies, revealing Hop 1.
  2. It sends a packet with TTL = 2. The second router drops it and replies, revealing Hop 2.
  3. This sequence continues incrementing until the packet finally arrives at the destination host, which replies with an ICMP Echo Reply or TCP acknowledgment.

Why Asterisks (* * *) Do Not Always Mean Packet Loss

One of the most frequent misconceptions in network diagnostics is assuming that a timeout asterisk (*) indicates a dead connection. In modern internet backbones:

ICMP Rate Limiting: High-capacity enterprise core routers prioritize forwarding production transit traffic (MPLS / BGP) in hardware ASICs. Generating software ICMP responses requires routing to the CPU control plane. To defend against CPU saturation, routers aggressively rate-limit ICMP generation. If subsequent hops respond, your traffic is passing through unharmed.

Asymmetric Routing: The Return Path Reality

Internet traffic rarely takes the identical physical route in both directions. Outbound packets from Uzvera to your destination might traverse Level3/Lumen fiber across Chicago, while returning packets from the target may route through Telia/Arelion across Atlanta. Traceroute latency measurements represent the total round-trip time across both asymmetric legs.

COMMON QUESTIONS

Frequently Asked Questions: Traceroute & Route Diagnostics

Technical answers regarding network hops, asterisks, and client report sharing.

What does traceroute do and how does it map network hops?

Traceroute maps the exact sequence of Layer-3 routers (hops) that data packets traverse to reach a remote server. It works by sending packets with incrementing Time-To-Live (TTL) values. When the TTL reaches 0 at a router, that router discards the packet and replies with an ICMP Time Exceeded message, revealing its IP address and round-trip latency.

Why do some hops display asterisks (* * *) or timeout?

Asterisks on an intermediate hop do not necessarily indicate a broken network. Many Tier-1 backbone routers and firewall appliances (such as Cisco or Juniper border gateways) deliberately deprioritize or drop ICMP TTL Exceeded responses to protect their control plane from denial-of-service attacks. If subsequent hops respond normally and the final destination is reached, the connection is healthy.

What is the difference between this web traceroute and running traceroute locally?

A web-based traceroute measures the network path originating from Uzvera's cloud data center probe to the target destination. In contrast, running traceroute from your local terminal measures the path from your local ISP / office router. Web traceroutes are ideal for verifying whether a server is accessible from global cloud backbone networks.

How can IT technicians use shareable Uzvera reports with clients?

When diagnosing ISP routing issues or packet loss for a client, technicians can click 'Share Report' to generate a clean, unlisted URL or 'Download Branded PDF'. The resulting report contains no confusing advertising, includes formal Uzvera verification metadata and a QR code, making it suitable for attaching to ISP escalation tickets or client deliverables.

What latency benchmarks indicate a healthy network route?

Within the same metropolitan or regional area, hop latency should typically remain under 15ms to 30ms. Transcontinental cross-country routes (e.g., US East to West Coast) typically measure 60ms to 80ms, while transoceanic intercontinental routes (e.g., US to Europe or Asia) range from 100ms to 200ms depending on undersea fiber cable paths.