ASPR - American Show Pony Registry - open to Registered Hackneys, Registered ASPC Shetlands, and Shetland/Hackney crosses. ASPR is a breed and performance registry. ASPR x ASPR will = ASPR (as will ASPR x ASPC and ASPR x Hackney).
NSPR - National Show Pony Registry - open to get of one registered ASPC pony OR one AMHR registered mini - ASPC or AMHR parent and get must be DNA tested. NSPR is a performance only registry - not a breed registry. NSPR x NSPR = grade. NSPR x ASPC = NSPR, NSPR x AMHR = NSPR, ASPC x any other breed = NSPR, AMHR x any other breed = NSPR.