The Form 477 Filing Interface is now available!

Data for June 30, 2022 are due by September 1, 2022.


  • Broadband Data Collection: The FCC's first Broadband Data Collection (BDC) opened on June 30, 2022. All facilities-based providers of mobile or fixed broadband internet access must submit their filings by September 1, 2022. Broadband service providers must submit BOTH the FCC's Form 477 and the Broadband Data Collection filings. Please see the Broadband Data Collection page for more info


  • Census Geography Codes:  2020 Census geography codes must be used when you’re creating and filing your data as of December 31, 2021 (due March 1, 2022).  To ease revisions, filings of data as of June 30, 2021 and before will continue to rely on 2010 Census codes.
    • Census Bureau Geocoding API: The Census Bureau's Geocoding API  offers the same functionality and more. It can return 2010 or 2020 geographies and has additional features.
    • FCC Census Block API: The FCC's Census Block API is now available for generating 2010 and 2020 Census geographies.


  • New Login:  A CORES Username and Password are required to log in to the Form 477 filing interface. For info on getting a CORES username and password, click here and for a preview of the new login procedure, click here.


  • Where's my FRN?:  If you log into the Form 477 filing interface and don't see your FRN(s) listed in the drop-down box but have already associated the FRN(s) with you CORES username, please send an email containing your CORES username and FRN to



Friday, July 1, 2022