Up to Nascar??
And Jayski has this.,. Who owns the Nextel Cup car numbers? NASCAR owns and assigns car numbers to an owner(s). NASCAR reserves the right to revoke or transfer car numbers to another owner/team at any time. Car numbers are non-assignable and non-transferable, except by NASCAR. NASCAR works with teams and sponsors when a specific number is requested. If duplication of numbers occur, which usually happens with the part-time teams, the fastest qualifier usually gets to use the number unless one team is considered full-time. In 2002, the #27 was used by Scott Wimmer for Bill Davis Racing and by Kirk Shelmerdine, both part time, however, Wimmer was listed in the #27 and Shelmerdine in the #`172 and when they attempted the same races, Wimmer got to use the #27 and Shelmerdine ran the #72, so NASCAR uses it's judgement in deciding who runs the number.(9-6-1999/9-17/2003)