LITTLE ROCK, Ark., March 7, 2013 /PRNewswire/ -- Comcast, the nation's largest Internet service provider, announced it is increasing the speeds of two of its most popular XFINITY™ Internet speed plans, Blast! and Extreme 50, in Arkansas starting today for no additional cost. Customers will enjoy more than twice as fast Internet speeds on multiple devices, allowing them to surf, chat, stream HD movies and TV shows, or game online with double the speed. Also for no additional cost, Comcast in April will increase the speed of its widely used Performance plan by more than 60 percent. "As customer demands and technology evolve, we continue to increase our broadband speeds to deliver the best, fastest and most reliable Internet experience possible for our customers," said Tim Collins, Comcast Regional Senior Vice President. "Whether chatting, surfing, streaming, gaming, Skyping or downloading, families will get the superfast, high-performing Internet service they need, with no extra charge." Specifically, the Blast! plan is increasing download speeds from up to 25 Mbps to speeds up to 50 Mbps and upload speeds from up to 4 Mbps to up to 10 Mbps, while Extreme 50 customers will receive download speeds up to 105 Mbps (formerly 50 Mbps) and upload speeds up to 20 Mbps (formerly 15 Mbps). The Performance plan is increasing to speeds up to 25 Mbps from 15 Mbps downstream and to 5 Mbps from 2 Mbps upstream. To activate the new speeds when they become available, customers just need to re-start their cable modems. For the third year in a row, the Federal Communications Commission has shown that Comcast delivers speeds to customers that are even faster than the advertised speeds. Comcast is not only delivering the nation's fastest Internet, but it is also providing the fastest in-home Wi-Fi with its latest XFINITY Wireless Gateway, an all-in-one device that gives customers reliably fast speeds with the most coverage in their home so everyone can get online and do more on their devices all at the same time.