commissioner. 1  a person authorized to do certain things by a commission or warrant. 2  a member of a commission (sense). 3  an official in charge of a certain government bureau, commission, departmental office, etc.
According to the Social Security Administration, your nine-digit Social Security Number (SSN) is divided into three parts: 1. The first three digits are known as the area number. Until June 25, 2011, this is generally the State or territory where your SSN was assigned. Thereafter, the number was randomly assigned.
Serial Number. The last four digits of the Social Security number are assigned consecutively from 0001 to 9999 upon application. Before 1965, groups of numbers were assigned to an area at one time, so some were issued out of order. These days, the series issue strictly in order.