[redthrowaway]

Any reason why all CloudFlare connections bounce through TeliaSonera in Switzerland? It seems grossly inefficient to cross the Atlantic twice just to get from Massachusetts to California.

Also, MIT -> Facebook : MA, MI, Singapore, Ireland, CA?

How accurate is the data?

[csvoss]

The data is as of March 2014, and therefore out of date -- I'm working on updating it right now. :)

As I remember from when the data was fresh, sometimes you do get crazy hops across the Atlantic like that, though.

[hhw]

Maxmind data is also often just wrong, updated or not. As a hosting provider with a number of IP ranges, we have to deal with submitting corrections to them, Google, ip2location, etc. all the time. Not sure why none of them seem to use very accurate methods to discern IP location.

Since you're doing a traceroute anyhow, you'd be better off analyzing the transit hops, and specifically the city codes used in the reverse DNS entries.

[beambot]

International hops make the traffic less illegally intercepted by domestic espionage organizations...?

[darkk]

Do you verify geoip data using RTT to the hop and speed of light in optical fiber?