Global broadband penetration is increasing—and speeding up, reports Akamai in its State of the Internet Report from 4Q15.

According to Akamai, during the fourth quarter of 2015, a 0.2 percent quarterly increase occurred in the number of unique IPv4 addresses connecting to Akamai’s Intelligent Platform. At 810 million, the number of unique addresses has risen by 1.7 million since 3Q15.

As well, global average connection speeds increased 23 percent year over year (YoY) during the fourth quarter, and 8.6 percent from 3Q15.

Leading the pack with the fastest connection speed was South Korea, which saw an increase of 30 percent quarter over quarter to an average speed of 26.7 Mbps. South Korea also reported a YoY growth rate of 20 percent during 4Q15, which shows that the country is aggressively increasing the speed of its broadband connection.

Half of the other countries in the top 10 for 4Q15 were Northern European: Sweden, Norway, the Netherlands, Finland and Denmark all cracked the list and reported speeds of 19.1, 18.8, 17.0, 16.6 and 16.1 Mbps, respectively.

Unfortunately for operators and consumers, the U.S. did not make the top-10 list of countries with the fastest global connection speeds. What’s more, Akamai cited a recent Pew Research study indicating that broadband adoption in the U.S. has plateaued, with an increasing number of Americans (13 percent) opting to access the Web using smartphones instead. This figure has increased by 8 percent since 2013.

In light of these figures, it will be very interesting to see Akamai’s next report and to track the continued growth through 2016.