...
Verify that they have roughly the right RTT.
- RTTs of < 80ms from SLAC probably indicate the host is in North America.
- One can also use a ping server at a PingER, PerfSONAR or PlanetLab site (see http://www.slac.stanford.edu/comp/net/wan-mon/viper/tulipmap.html) that is supposedly near the target host and ensure that the RTT is suitably small.
Then you probably want to select hosts that are educational (e.g. have .edu or .ac. on the hostname) and representative of the country, e.g. in main cities, and do not overlap their location.
...
Go to the web site and look for information on the location (e.g. try Contact us). Also try Lat Long Finder entering information found about the location of the site. Try looking for the site on Google maps. The link https://support.google.com/maps/answer/18539?co=GENIE.Platform%3DDesktop&hl=en provides information on how to findd the lat long of a site in Google maps.
Criteria
The criteria are:
...