According to promo, N@N has acquired Mom (CBS series). It says coming soon (no clue exactly when). Mom is currently showing Paramount, TVLand, FXX, as well as local syndicator networks.
CBS just finished with season 5 and renews for season 6.
N@N website didn't include Mom page link yet.

Mom also recently aired on CMT before along with Last Man Standing and Reba, before Full House joined CMT.

EDIT: according to regular zap2it, Mom will air on N@N at 1AM EST on late Jun 11, with 4 airings after Friends. Two and a Half Men will be off the lineup when Mom joins the lineup.

Two and a Half Men will move to TVLand starting Mon Jun 11 on same date Mom will move to N@N from TVLand

Zap2it and other tvguide has just updated, it turns out Mom is NOT airing in N@N after all in June. It's still unclear when or if it will air in N@N at later date.
Two and a Half Men returns back at 1AM with two airings

According to zap2it, Mom reschedules N@N on Mon Jul 2 at 2:30am with 4 airings because of off the clock