CAF Phase II Auction

Colorado Broadband Office Funding, News

This page will be a go-to source for CAF Phase II Auction information for Coloradans. New information, resources, and events will be posted here as they are made available. OIT encourages any parties interested in applying for CAF Auction funding to contact us and we will help you through the process.
Updated: February 8, 2018

About the CAF Phase II Auction

The Connect America Fund (CAF) Phase II program is in full swing. While the incumbent provider in Colorado (CenturyLink) did accept the allocated funds in our state (and is actively upgrading locations) there is money remaining in the fund for additional projects. Under the rules, any funding not accepted by the Incumbent Local Exchange Carrier (ILEC) in others states is to be ‘auctioned off’ in a reverse funding auction to any organization (private entities only) interested in serving specific areas. The FCC is finalizing the specifics of how the auction will work and we expect the process to begin some time in early 2018.

This program is an opportunity to fund solutions in traditionally difficult to reach areas and the Broadband Office will be actively engaging stakeholders in an attempt to maximize the investment in Colorado. We are currently analyzing the guidelines and available areas to help identify potential opportunities in the state. We will be following up with a comprehensive toolkit to help you understand the program and determine if it is something you wish to pursue. The Broadband Office will be offering its assistance to entities looking to apply to the program and if successful, helping them navigate the process of accepting the funds.

Update:   The FCC has release a number of documents in the last week including  FCC-18-6A1 outlining the details of the CAF Phase II Auction and DA-18-111A1 providing a revised final list of census blocks and block groups eligible for bidding.

Past Updates:

January 8 Update:   The Broadband Office has produced a maps using the final data. These are available in the same folder as the previous maps. Additionally, the Census block and block group data has been uploaded to the folder in both KML (Google Earth) and Shapefile (GIS software) format.

December 28 Update:  The final list of eligible census blocks has been released. See Public Notice DA 17-1219 for details. Please note that the minimum geographic area for bidding is the Census Block Group. The Broadband Office is currently working to produce maps with the updated data.

FCC Resources

Visit the FCC’s CAF Phase II Auction page for detailed information about the program and supporting documents:


Important Documents:


Important Dates and Deadlines:

Auction Application Tutorial Available (via Internet) By March 13, 2018
Short-Form Application (FCC Form 183) Filing Window Opens March 19, 2018; 12:00 noon ET
Short-Form Application (FCC Form 183) Filing Window Deadline March 30, 2018; 6:00 p.m. ET
Auction Bidding Tutorial Available (via Internet) By June 28, 2018
Mock Auction Begins During week of July 16, 2018
Auction Begins July 24, 2018

Eligible Areas:

View the Final Map of Eligible Areas (revised 2/6/2018)

Download the Final List of Eligible Census Blocks (released 2/6/2018)

Download the Final List of Eligible Census Block Groups (released 2/6/2018)


State Resources

The Broadband Office has created a series of maps utilizing the preliminary eligible areas data in order to help potential applicants in Colorado to identify opportunities. In this folder you will also find summaries of CAF eligible areas and funding by County, by Census Tract, by Broadband Fund project areas, and by Provider.

These general maps can help identify opportunities for entities in Colorado. The figures represented in these maps are not final and not comprehensive. If you plan to apply for CAF II Auction funding, we would recommend more thorough data analysis. Please contact us if you would like any additional maps or any assistance from the Broadband Office.


There are no scheduled events. Please contact us if you would like to set up a one-on-one meeting.

Past Events:

CAF II Auction Seminar | December 5, 2017 | 1:00 PM – 4:00 PM