Speaking about new numbers for MMer spouses, I registered mine to be matched to my status some time ago. She never had a OP number and currently has no elite status.
Today, I go into her preview page and notice that she has a number that has three letters and five numbers, like KNC12345. Since I thought that the OP number array is two letters and five numbers, wonder if status-matched spouses of MMers get an added letter "C" to segregate them in the MileagePlus record system???