XHLNA-TV channel 21 is the television call sign for the TV Azteca television station in Nuevo Laredo, Tamaulipas, Mexico. The station is affiliated to the Azteca 13 network and is part of Azteca 13 Noreste. This channel also broadcasts local news and programming. XHLNA also broadcasts in HDTV on digital channel 50.1 (virtual channel 21.1). This station was among the first in Mexico to broadcast a digital signal. Azteca 13 Noreste programming can be seen on its analog channel
XHLNA-TV broadcasts in HDTV on channel 50.1 and tested Azteca 13 programming in 3D on August 20, 2011 on sub-channel 50.2  On November 30, 2012, XHLNA started broadcasting Proyecto 40 programming on subchannel 50.2.