how to check i-140 status and which center?

Just got the receipt number, it starts with LIN, what center is this? and how can I check the status?

many thanks,

所有跟帖： 

• USCIS.GOV -greatstar- ♂ (84 bytes) () 09/13/2006 postreply 07:08:47

• LIN = Lincoln, Nebraska or NSC -greatstar- ♂ (51 bytes) () 09/13/2006 postreply 07:14:07

• 回複：how to check i-140 status and which center? -neon06- ♀ (147 bytes) () 09/13/2006 postreply 07:14:04