Comcast has added 18 live channels to its outside-the-home streaming service — bringing the lineup to 53 — but it remains devoid of live broadcast programming from ABC, CBS, Fox and NBC.

The nation’s biggest cable operator Xfinity TV Go app and web-streaming service now offers live feeds of Turner’s TBS, TNT and truTV; NBCUniversal’s USA Network, Bravo, E!, Syfy, mun2, Oxygen and Sprout; A+E Networks’ A&E and History; Scripps Networks Interactive’s Food Network, Cooking Channel, DIY Network, HGTV and Travel Channel; and the Starz premium channel.

Last November, the Xfinity TV Go app for Android and Apple iOS devices began offering 35 live-streaming TV channels for the first time over Wi-Fi connections. The 53 live channels, which include ESPN, CNN, CNBC and Fox News, also are available online at Xfinity.com/TV.

SEE ALSO: Comcast to Stream 35 Live TV Channels to Mobile Apps Outside the Home

While Comcast doesn’t offer live broadcast TV, it does provide on-demand access through Xfinity TV Go and the online service to shows from ABC, CBS, Fox and NBC. All told, the operator provides more than 25,000 VOD titles and the ability to download select movies and TV shows to watch offline later through the Xfinity TV Go app.

Comcast subs in Philadelphia, Chicago, San Francisco, Houston and Fresno, Calif., do have access to WatchABC, the authenticated live-streaming service from the Alphabet net for ABC-owned stations in those markets.

But so far, ABC’s limited app remains the only way pay-TV customers can access live programming outside the home. The Dyle mobile TV service, a joint venture of 12 broadcast groups, is available in 38 U.S. markets, but that requires users to buy specialized hardware or an antenna plug-in for tablets and smartphones. Then there’s also Aereo, the startup facing a Supreme Court hearing next month in a challenge by broadcasting companies that allege Aereo is stealing their signals.

SEE ALSO: CBS Chief Moonves: We Can Go Over-the-Top If Aereo Wins at Supreme Court

Comcast will “continue to aggressively expand both the live and on-demand offerings on the app and provide our customers with the ultimate selection of content across all devices,” Matt Strauss, senior VP and GM of video services for Comcast Cable, said in announcing the expanded service.