District of Columbia SSN lookup

Area numbers assigned to District of Columbia fell in these old-system blocks: 577-579. Use this page to see which prefixes matched District of Columbia and then check an individual number.

Area number range

577-579

Published area blocks tied to this lookup page.

Area count

Distinct area numbers in this assignment block.

What this page tells you

Location match

Use these prefixes to see whether the first three digits point to District of Columbia before you run a full lookup.

District of Columbia area numbers

The first three digits of an old-style SSN could point to District of Columbia when they fell inside one of these published ranges.

577-579

Areas 577 through 579

District of Columbia SSN patterns by year

These rows show the issued area and group combinations linked to District of Columbia. Open any pattern as a full lookup by swapping in the last four digits.

Social Security number	First year	Last year	Likely age today	Status
577-01-####	1936	1950	76 to 108 yrs	Valid
577-03-####	1936	1950	76 to 108 yrs	Valid
577-05-####	1936	1950	76 to 108 yrs	Valid
577-07-####	1936	1950	76 to 108 yrs	Valid
577-09-####	1936	1950	76 to 108 yrs	Valid
577-10-####	1936	1950	76 to 108 yrs	Valid
577-12-####	1936	1950	76 to 108 yrs	Valid
577-14-####	1936	1950	76 to 108 yrs	Valid
577-16-####	1936	1950	76 to 108 yrs	Valid
577-18-####	1936	1950	76 to 108 yrs	Valid
577-20-####	1936	1950	76 to 108 yrs	Valid
577-22-####	1936	1950	76 to 108 yrs	Valid
577-24-####	1936	1950	76 to 108 yrs	Valid
577-26-####	1936	1950	76 to 108 yrs	Valid
577-28-####	1936	1950	76 to 108 yrs	Valid
577-30-####	1938	1951	75 to 106 yrs	Valid
577-32-####	1939	1952	74 to 105 yrs	Valid
577-34-####	1941	1953	73 to 103 yrs	Valid
577-36-####	1942	1954	72 to 102 yrs	Valid
577-38-####	1944	1955	71 to 100 yrs	Valid
577-40-####	1945	1956	70 to 99 yrs	Valid
577-42-####	1947	1958	68 to 97 yrs	Valid
577-44-####	1948	1959	67 to 96 yrs	Valid
577-46-####	1950	1960	66 to 94 yrs	Valid
577-48-####	1951	1961	65 to 93 yrs	Valid
577-50-####	1953	1962	64 to 91 yrs	Valid
577-52-####	1954	1963	63 to 90 yrs	Valid
577-54-####	1956	1964	62 to 88 yrs	Valid
577-56-####	1957	1965	61 to 87 yrs	Valid
577-58-####	1959	1966	60 to 85 yrs	Valid

How to use this page

If an SSN starts with one of the prefixes above, District of Columbia is a likely issue location under the old system.

To check the number further, run the full nine digits through the checker. The result page can then tell you whether the group fits the published record and what year range the number most likely falls into.

Example old-style prefix for this page: 577-01-0001

Check a District of Columbia SSN

Enter a full SSN to check whether it fits the old record for District of Columbia.

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