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 About Operating Company Number Codes

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OCNs (Operating Company Number) codes, also known as company codes, are assigned by NECA.  The OCN is a four digit number used to identify local telecommunications providers. It is used on ASRs (Access Service Request) as well as in the NPA-NXX ordering process. A telecommunications provider can have more than one OCN, if they offer different types of service or operate in a several different states. The main OCN number assigned to the provider is referred to as the Parent OCN.

 

 

 

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