OCN (Operating Company Number) is a 4 character ID for North American phone companies.
OCN numbers are assigned by NECA and used to identify companies in other telecommunications resources such as the LERG.

Examples of OCN Numbers:
0001 = Pac West Telecom
985A = University Telecom
997C = Central Wisconsin Communications

NECA sells the list of OCN numbers, but the other sources make similar information available free.

See Also

Created by: admin, Last modification: Mon 31 of May, 2010 (19:54 UTC)
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