Remember that these are for mobile internet speed. There are lots of maps below - and below that I added a few notes on the data and so on. I also did a map of Mobile, Alabama - it seemed like it had to be done. To cut a long story short, I took the most recent global data on mobile internet speeds for a number of different cities (staring with Seattle, below) and produced a series of 3D maps of mobile internet speeds. One of the great things Ookla do, beyond offering Speedtest, is share their data as open data. Most of the world's ISPs and mobile carriers use Ookla data to help analyse their services.

The company behind Speedtest is Ookla, and they have their headquarters in Seattle, with another office in Dublin. Actually, their about page has a live ticker telling you how many Speedtest tests have been undertaken to date, if you want to have a look. Since 2006, more than 40 billion internet speed tests have been carried out by users of and it's used by over 10 million people every day.

Ookla speed map