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Use /afs/slac.stanford.edu/package/pinger/HostSearcher.pl to locate www hosts in the required TLD, e.g.for Malaysia (TLD=my):

Code Block

HostSearcher.pl --tld my --webonly --filter tld | tee my

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If GeoIPTools is working then select hosts that it says are in the correct TLD, e.g.

Code Block

grep MY my

Verify that they have roughly the right RTT. 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.

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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.

Criteria

The criteria are:
  1. The target needs to respond to pings.
  2. The target needs to respond 24x7x365
  3. The target needs to continue responding with the same address for multiple years.
  4. We need to be able to find the actual location (lat/long) of the target.
    1. The target must not be a proxy, i.e. the RTT must be such as one would expect given the apparent location of the host.
  5. Host needs to be representative of the country.
Given the above we get a list of hosts in the country (i.e. with the TLD of the country) from Google.  Then we test to see whether the host is pingable. We prefer to use www hosts as targets (since we can use the web to find out more about the site, such as city, street address etc.), and (less important) hosts that are associated with a university (e.g. have .edu or .ac in the hostname).  This is since Universities tend to stick around for many many years as opposed to commercial sites.  Also it is good to have a location diversity of the sites (e.g. not all in one city).