The data, from network giant Akamai reveals the average global net speed is only 1.7 Mbps (megabits per second) although some countries have made strides towards faster services.
And Masan in South Korea stands at the top with Internet speed of 12 Mbps.
At the second spot is Hong Kong with 9 Mbps, followed by Japan with 7.8 Mbps.
Rounding up the top 5 are Romania and Latvia with 6.3 Mbps speed each.
In the speed league table, the UK is ranked 27th out of 201 countries, with an average speed of 3.8 Mbps.
This is below the 5.2 Mbps average speed calculated by regulator Ofcom in its annual broadband report.
“Other countries have got faster,” the BBC quoted David Belson, head of market intelligence at Akamai, as saying.
Even in South Korea, which tops the speed league table and is often perceived as enjoying super-fast broadband as the norm, the average speed is a relatively slow 12 Mbps, with the average maximum hitting 33 Mbps.
“100 Mbps is available in South Korea but it is often at prices that are not affordable by the general public. It can cost several hundred dollars a month,” said Belson.
Asia dominates the list of fastest wired cities with more than half of the top 100 cities in Japan. Only 12 US cities make the list.
Top 10 average net speed by region:
1. South Korea 12 Mbps
2. Hong Kong 9 Mbps
3. Japan 7.8 Mbps
4. Romania 6.3 Mbps
5. Latvia 6.3 Mbps
6. Sweden 6.1 Mbps
7. The Netherlands 5.9 Mbps
8. Czech Republic 5.4 Mbps
9. Denmark 5.3 Mbps
10. Switzerland 5.2 Mbps.