Comcast's New Speed Limit: 105 Mbps?

Comcast in June may roll out a residential broadband service -- dubbed "Extreme 105" -- that offers a blistering 105 Megabits per second downstream, which would make it one of the fastest Internet services available in the U.S.

A user purporting to be a Comcast customer in eastern Pennsylvania posted a notice from his or her May statement on, indicating the 105-Mbps down and 10-Mbps upstream tier would be available around June 1.

The Extreme 105 service will be $199.95 per month, plus a one-time $249 installation fee, and will use an Arris WBM760 DOCSIS 3.0 modem, according to the post.

Comcast spokesman Charlie Douglas declined to comment.

Previously, Comcast executives have confirmed plans to offer a 100-Mbps service widely in 2010. The operator has deployed DOCSIS 3.0 to about 83% of its footprint, representing more than 40 million homes, chief technology officer Tony Werner said during a panel discussion this month at Cable Show 2010.

In the next 12 to 18 months, Comcast anticipates being able to offer 100-Mbps Internet service to many, if not all, of the markets where it has rolled out DOCSIS 3.0, Cathy Avgiris, senior vice president and general manager of communications and data services, said in an interview earlier this year.

Other MSOs in the U.S. that have hit the 100-Mbps mark include Cablevision Systems, which offers a 101-Mbps downstream service to its New York-area residential customers, while Mediacom Communications has introduced a 105-Mbps down and Suddenlink Communications is offering 107 Mbps in some Texas markets. 

In Canada, Shaw Communications offers a 100-Mbps service.