The Mexican version of the hit celebrity singing format made its debut on the Hispanic network this past Sunday, making it the number two most-watched network in the US in key demos.

Last night’s highly anticipated U.S. premiere of ¿Quién Es la Máscara? (The Masked Singer) reached 3.8 million Total Viewers 2+, who tuned-in to all or part of the telecast on Univision.

Airing from 8 to 10:30 p.m. ET as part of Univision’s Domingos en Familia (Family Sundays), ¿Quién Es la Máscara? delivered an average audience of 1.4 million Total Viewers 2+, 522,000 Adults 18-49 and 226,000 Adults 18-34, positioning Univision ahead of CBS, NBC and FOX in the time period among Adults 18-49 and Adults 18-34.

Additionally, Univision delivered more Total Viewers 2+ than FOX during the premiere of “¿Quién Es la Máscara?”.

Hosted by Omar Chaparro and featuring Yuri, Carlos Rivera, Consuelo Duval and Adrián Uribe as panelists, the premiere ranked as the second most-watched program on broadcast television during primetime with Adults 18-34 and among the top five with Adults 18-49. For the entire night, the reality competition series propelled Univision ahead of CBS, NBC and FOX among Adults 18-34, as well as NBC and FOX with Adult 18-49 viewers.

Quién Es la Máscara? positioned Univision as the No. 1 Spanish-language network with double-digit audience advantages over Telemundo from 8-10:30 p.m. among Total Viewers 2+ (+65 percent advantage), Adults 18-49 (+56 percent advantage) and Adults 18-34 (+52 percent advantage), and outperformed Telemundo’s entire original primetime line-up of Exatlón Estados Unidos and La Voz II.

Furthermore, ¿Quién Es la Máscara? led Univision to a first-place finish on Spanish-language television for the entire night with double-digit audience advantages over Telemundo across all key demos.