i bought a factory unlockeed at&t iphone 5 offline 16gb all the model numbers factor

i bought a factory unlockeed at&t iphone 5 offline 16gb all the model numbers factory unlocked i see on ebay are different then mine. can someone help me and tell me what does the model number mean mines is bought with no contract in march online apple store 2013


model # NE486LL/A

----------

sorry to resurrect