The band comes out from a nu metal project put up by Francesco and Marco in January 2004. At the beginning they had in mind a home project with just two members. A couple of months later, Francesco decides to leave his two metal bands (Hour Of Penance & Rust Of Reason) and complete his new one. At the bass there is Fabrizio, dear friend and ex member of Rust Of Reason also. Then the band starts looking for a drummer. After checking out some offers, here comes Stefano, californian rock and nu metal drummer and an old friend of Francesco and Fabrizio. The band starts to practice in April 2004 and gets ready to face its first labour, a 5 tracks demo that will be released in winter. At last the band completes its line up with DjSponda at the turntables. Francesco calls him and asks him to cooperate with NOTANUMBER. After recording "Urban Decay" demo and after our first live, on the 31st of january 2005 DjSponda officially joins the band.