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An FCC Registration Number (FRN) is a 10-digit number that is assigned to a business or individual registering with the FCC. This unique FRN is used on all business transactions with the FCC.

The current COmmission REgistration System (CORES) will be retired during the Spring of 2017; after the system is retired, customers wishing to create a new FCC Registration Number (FRN) or modify an existing FRN will need to create an FCC Username Account in the updated CORES system. This Username Account will allow customers to create new FRNs, modify existing FRNs, and associate existing FRNs to their Username Account.

At this time, there are no changes to how other FCC systems associate resources (applications, licenses, etc.) to FRNs.

News releases related to the FCC Registration Number.



Username Login

Note: The Username is the email address associated with your FCC Username Account.








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Customer Service
For assistance, please contact the User Registration System and CORES Help Desk at 202-418-4120 (Mon.-Fri. 8 a.m.-6 p.m. ET) or email CORESHelpDesk@fcc.gov with your questions and concerns.