The Full Form of UBL is Ultimate Band List.

Artistdirect began as an online music retailer and distribution company. It hosted the Ultimate Band List (UBL), a database with information on over 600,000 artists, concerts, record labels, and other music-related resources. In 1997, it partnered with the band Blink-182 to create Loserkids.com, an online store and community site for fans of the music and fashion of cutting-edge Alternative rock, punk, metal, and hard rock artists It featured merchandise from various brands including Hurley, Dickies, and Ben Sherman. In the early 2000s Artistdirect combined the database of the Ultimate Band List and online store with free audio and video streams, music news, album reviews, and movie trailers.