Originally posted by Niza
Yes. You can't find the type of application (I-140 or I-131 etc.) from the WAC number. But there are some information you can find. Like... If the number is WAC-YY-DDD-5NNNN. Then you know WAC is California Service Center. YY is the year (OCT 01, 2002 to Sep 30, 2003 will be "03"). DDD is the working day when the application was recieved. In "5nnnn" 5 is alway common (don't know why. "NNNN" is the application number given on that day.