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Per the IRS How EINs are Assigned and Valid EIN Prefixes webpage, the prefix for an EIN number indicates which campus assigned it. Valid EIN numbers start with the following prefixes.

Campus/
Other Location
Valid EIN Prefixes
Andover 10, 12
Atlanta 60, 67
Austin 50, 53
Brookhaven 01, 02, 03, 04, 05, 06, 11, 13, 14, 16, 21, 22, 23, 25, 34, 51, 52, 54, 55, 56, 57, 58, 59, 65
Cincinnati 30, 32, 35, 36, 37, 38, 61
Fresno 15, 24
Kansas City 40, 44
Memphis 94, 95
Ogden 80, 90
Philadelphia 33, 39, 41, 42, 43, 46, 48, 62, 63, 64, 66, 68, 71, 72, 73, 74, 75, 76, 77, 85, 86, 87, 88, 91, 92, 93, 98, 99
Internet 20, 26, 27, 45, 46, 47, 81, 82, 83, 84, 85
Small Business Administration (SBA) 31

Note that any link in the information above is updated each year automatically and will take you to the most recent version of the document at the time it is accessed.


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