Using the script HostSearcher.pl, we use the Google search parameter q=site:<TLD> feature, e.g. for Malaysia (<TLD>=my)
- wget -U \"Mozilla/5.0\" 'http://www.google.com/search?q=site:my&num=100&hl=en&hs=xEp&lr=&client=firefox-a&rls=org.mozilla:en-US:official_s&as_qdr=all&start=900&sa=N'
to find up to 1000 www hosts in the specified TLD. For each found site, we ping the host to measure the Round Trip Time (RTT) and also use https://api.ipdata.co to get its location. We filter out hosts that do not have reasonable ping RTTs for the specified country, and also those identified as not being in the right location (country) according to https://api.ipdata.co. We then browse the host web site, looking for possible location information (e.g. street address, map etc.). We use this information together with Google maps (see https://support.google.com/maps/answer/18539?co=GENIE.Platform%3DDesktop&hl=en) to get the latitude and longitude.