Number

"Area numbers that are currently in use are the following; 001 to 595, 600 to 649, 700 to 728.

Any purported Social Security number with an area number outside of these ranges is invalid. Area numbers are assigned to various states...New York is assigned the area numbers from 050 to 134. North Dakota, by contrast, is assigned only the area numbers 501 and 502...

Anyone who presents a Social Security number in the 700 to 728-area band needs to regarded with suspicion. These area numbers were assigned in only a few limited circumstances.

The 700 series of numbers were issued to people in the railroad retirement system in the first half of the century and to some refugees from the Vietnam conflict during the period of 1975-1980. Anyone who legitimately has a Social Security number in this range will be either quite elderly or a Southeast Asian refugee."

This is what John said.