In March 1968, Mario Rincón Espinosa, the head of Tele Nacional, S.A., requested and received a concession to build a UHF station in Tijuana.
The next year, Rincón Espinosa was granted authorization to cut power in half; on several occasions in 1976, the Secretariat of Communications and Transportation (SCT) reached out to seek revised technical information and was not given a response.
It originally operated as a rebroadcaster of Televisa's XEW television[6] for all but two hours a day, when it aired a limited slate of Mexican movies and independent programs.
[9] Entravision acquired operating control in 2000, resulting in a lawsuit from Telemundo, which claimed it had right of first refusal and wanted to purchase the outlet for $30 million.
[12] In January 2017, NBC announced that it was hiring people for KNSD with the intention of launching a new Telemundo O&O station in San Diego, replacing XHAS-TDT (whose affiliation expired on June 30, 2017).
[14] It was announced in October 2022 that Intermedia, owner of XHILA-TDT in Mexicali, would take over programming for the station on November 2, to be called "Canal 33".
While it competes with the local newscasts on Univision-affiliated sister station KBNT-CD seen in the same timeslots, as the two stations share studio facilities in Entravision's building, XHAS focuses its newscasts more on issues affecting Tijuana (competing against locally programmed XEWT-TDT (channel 12)), while KBNT-CD focuses more on San Diego.