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Akamai monitors global Internet conditions around the clock. With this real-time data it identify the global regions with the greatest attack traffic, cities with the slowest Web connections (latency), and geographic areas with the most Web traffic (traffic density). – http://wwwnui.akamai.com/gnet/globe/index.html

As per Forbes & Akamai followings are top 10 fastest web countries in world.

No. 10: United Kingdom
Last year’s megabytes per second (Mbps) speed averaged 7.1 Mbps, up 48% from a year ago. In the second quarter of 2013, average speeds for broadband internet connections were 8.4 Mbps, according to Akamai.

No. 9: Sweden
Those Nordics got the best of everything, don’t they? Except weather. The Swedes had speeds averaging 7.4 Mbps, up 44% from a year ago. In the second quarter of 2013, average connection speeds were 8.4 Mbps.

No. 8: USA
The U.S. had average connection speeds of 7.4 Mbps, 28% faster than in 2011.  second quarter 2013 got even faster for the netizens of the U.S., with speeds averaging 8.7 Mbps, according to Akamai.

No. 7: The Czechs
Average connection speeds in the Czech Republic back in 2012 were 8.1 Mbps, up 36% from a year ago. In the first quarter, broadband connection speeds were an even better 9.8 Mbps.

No. 6: The Netherlands
Also faster than us, The Netherlands had an average broadband connection speed of 8.6 Mbps, up 29% from 2011. In the second quarter, broadband connection speeds averaged 10.1 Mbps.

No. 5: Even Latvia is Faster
Latvia internet speeds are faster than they are in the U.S., with 2012 averages of 8.9 Mbps, up 22% from a year ago. In the Second quarter of 2013, internet speeds in Latvia hit 10.6 Mbps.

No. 4: Hong Kong
Hong Kong benefits in part from its old colonial days under the British flag, with top rate infrastructure and money from the world over. Internet speeds averaged 9.3 Mbps last year, up 21% from a year ago. In the second quarter, broadband connection speeds averaged 10.8Mbps.  This compares to average mainland China internet speeds of just 1.7 Mbps, according to Akamai.

No. 3: Switzerland
In 2012, average broadband connection speeds were 8.7 Mbps, up 34% from 2011. By the second quarter months of 2013, they rose to 11 Mbps.

No.2 : Japan
Japan’s average internet speed was 10.8 Mbps in 2012, up from 11% a year ago. By the second quarter of 2013, average connection speeds rose to 12 Mbps.

The Fastest Web On EarthSouth Korea
South Korea’s Samsung beats Apple, and South Korea’s internet beats the United States. When it comes to broadband connection speeds, the Koreans averaged 13.3 Mbps last year, but that was a surprising 6.4% drop from a year ago. By the second quarter of 2013, internet speeds were a bit higher at 14 Mbps.
Average Connecton Speed - Top Ten Countries