Trace Route is a computer network tool used to determine the route taken by packets across an IP network. An IPv6 variant, traceroute6, is also widely available.
The traceroute tool is available on practically all Unix-like operating systems. Variants with similar functionality are also available, such as tracepath on modern Linux installations and tracert on Microsoft Windows operating systems. Windows NT-based operating systems also provide PathPing, which provides similar functionality. 
- ↑  Connolly,Gene Michael. (May 2003), DISTRIBUTED TRACEROUTE APPROACH TO GEOGRAPHICALLY LOCATING IP DEVICES, University of Maine.