The fictional company that buys NBC’s parent company in later 30 Rock seasons is Kabletown.
Kabletown enters the series as a Philadelphia-based media and cable company that acquires the fictional NBC corporate structure. Its takeover becomes a recurring storyline in the fourth season, changing the pressures faced by Jack Donaghy, Liz Lemon, and the rest of the TGS staff. Kabletown executive Hank Hooper later becomes an important authority figure in the series.
The plot mirrors a real corporate event: Comcast’s acquisition of NBC Universal, then partly owned by General Electric. 30 Rock turns that merger into satire, replacing the real buyer with the deliberately awkward name Kabletown. The storyline also plays with the contrast between NBC’s New York identity and a new parent company based in Philadelphia.
A common mix-up is Sheinhardt Wig Company, another fictional corporation in the show’s ownership hierarchy. Sheinhardt is associated with the earlier corporate structure, while Kabletown is the later acquirer. The joke works because 30 Rock continually exaggerates the layers of ownership, branding, and executive bureaucracy surrounding a television network.