Beef Cross Reference AI Sire Database Search Form Search by NAAB Code Instructions: Enter the NAAB code without leading zeros. For example, 8AN39, not 008AN00039. * NAAB Code Search by Registration Number Instructions: Enter the registration number of the bull you are searching for in the text field. * Registration Number Search by Full Registration Name Instructions: Enter the registration name of the sire in the text field, and click on 'Search'. Don't worry if you don't know the exact name; we'll give you a list of anything close, and let you pick from there. * Reg. Name Search by Short Name Instructions: Enter the registration name of the animal in the text field, and click on 'Search'. Don't worry if you don't know the exact name; we'll give you a list of anything close, and let you pick from there. * Short Name