North America's largest MSO is piling up broadband subscribers again, with a big boost from the now-defunct Adelphia Communications .

Comcast Corp. (Nasdaq: CMCSA, CMCSK), which ended the second quarter with 9.34 million cable modem subscribers, proclaimed earlier this week that it has now signed up 10 million data customers. That makes it the first U.S. or Canadian broadband provider to hit this milestone, although AT&T Inc. (NYSE: T) will easily surpass the mark as well when the feds approve its pending deal to take over BellSouth Corp. (NYSE: BLS).

Comcast rightly credits this achievement partly to its takeover of numerous Adelphia cable systems. As a result of its joint $17.6 billion purchase of Adelphia with Time Warner Cable Inc. (NYSE: TWC) last month, Comcast took charge of Adelphia's systems in south Florida, Boston, Pittsburgh, Hartford, Conn., Colorado Springs, Colo., and Vermont. In addition, as part of the complicated Adelphia purchase, Comcast swapped its huge systems in Los Angeles and Dallas for Time Warner's cable systems in Minneapolis, Memphis, Tenn., Jackson, Miss., Louisiana, and northeastern Florida.

Get all the details at Cable Digital News.

— Alan Breznick, Site Editor, Cable Digital News