What does the code [START] mean?
This is a dummy code used to indicate the point where the traceroute starts. Since I already know the locations of the traceroute servers themselves, the first location displayed/mapped is taken directly from the location of the traceroute server and not from the code. 2.3. Why are the codes in the code database biased towards the United States? This project started out as an attempt to map Internet hosts in the United States only. Now that it’s been expanded, I hope to add more international codes as well. 2.4. Isn’t it possible for two different ISPs to use a single code to mean different things? Yes. This isn’t a problem for codes like “LAX” which almost universally will mean Los Angeles, CA, USA, but a code like “POR” might mean Portland, OR, USA for one ISP and Portland, ME, USA for another– and these two Portlands are 3000+ miles apart. I haven’t run into this situation so far, but, if I do, I’ll alter the list of patterns to separate these cases (eg, “POR” found in an alter.net