The "Arlanda Express" operates four times per hour, increasing to six times per hour during rush hour, to and from Stockholm Central Station, the largest railway station in Sweden and in the Nordic region. Operated by A-Train, the service uses seven X3 trains and calls at the north and south stations. The line is also served by 70 other regional and intercity trains daily, operated by SJ, SJ Norrlandståg and (with very limited service) Upptåget, and since December 2012 also by Stockholm Commuter Rail. These all stop at Arlanda Central.