There are changes to Form 477 for filings as of December 31, 2019!

Filing Form 477:

• Filing Interface 
• Who Must File Form 477? (PDF) updated 12/23/19
• Obtain an FRN (FCC Registration Number) or username from FCC CORES if you do not already one. 
  • Reset an FRN password or username password if necessary.
• For help, send an e-support request or call 1-877-480-3201 or 1-717-338-2824 (TTY).

Instructions, Guides & FAQs:

• Changes to Form 477 in 2019 and 2020 (PDF) new
• Instructions (PDF) updated 12/23/19
• Resources for Each Form Section: Formatting Info, Templates, Sample Files updated 12/23/19
• Glossary of Form 477 Terms (PDF) updated 12/23/19
• Creating Fixed Broadband Deployment Data
• Using CSV Files in Excel
• Interface User Guide (PDF) updated 1/14/20
• Frequently Asked Questions (PDF) 
• Videos & Webinars
• Resources for Filings through June 30, 2019 updated 12/23/19

Geographical Resources:

• Overview of Census Tracts (PDF)
• List of Valid 2010 Census Tracts (Excel)
• U.S. Census Bureau - Census Tract Maps
• Visualizing Census Tracts in Google Earth (PDF)
• Overview of Census Blocks (PDF)
• List of 2010 Census Blocks by State
• U.S. Census Bureau - Census Block Maps
• Using Census's Geocoder (PDF)
• Find Your Service Area Census Blocks Using QGIS (PDF)

Data & Reports:

• Fixed Broadband Deployment Map
• Fixed Broadband Deployment Census Block Data
• Mobile Broadband and Voice Deployment Data
• Internet Access Services Reports
• Voice Telephone Services Reports
• Broadband Progress Reports
• Additional Form 477 Data
• How State Commissions Can Obtain Form 477 Subscription Data

Form 477 Orders and Other Releases

Form 477 General Questions: email 477info@fcc.gov or call 202-418-0940.