ask the attorney or whoever filled for you for A# and WAC#
Before INS send the notice of receipt to you, u can\'t ask them anything, maybe your application wasn\'t even opened in the mail room yet (they had about 2 mo. frontlog in the mail room!), nobody can\'t tell you anything, they don\'t even know about you yet.
Once the notice was sent, u\'ll find there both WAC# and A#.
The chances to call (949)831-8427 during the work hours are small, u need to try continuously for hours.
Anyway, even if u are lucky to get through, the IIO will ask for the same numbers, so get them from your attorney or whoever filled for you. Without those numbers it\'s like u don\'t exist for INS.