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Copper phone line retirement in Colby, WI

Frontier has filed with the FCC to retire copper phone service in the Colby exchange, as of March 3, 2026.

Get a plan for your lines Check a specific line

Or call 623-307-5548

What has been filed

  • Frontier has asked the FCC for permission to stop offering legacy voice service called AT&T Residential Local Service in the Colby exchange, as of March 3, 2026.

    FCC docket 25-327 · names this exchange

  • Frontier has asked the FCC for permission to stop offering residential and business legacy TDM-based voice service in portions of Wisconsin, on or after November 16, 2026.

    FCC docket 26-170 · covers portions of the state

  • Frontier has asked the FCC for permission to stop offering business copper phone services (business lines, PBX trunks, ISDN and similar) in portions of Wisconsin, on or after November 16, 2026.

    FCC docket 26-171 · covers portions of the state

Areas served by the Colby exchange

Besides Colby, the exchange serves Abbotsford and Unity.

ZIP codes: 54421, 54488. Exchange boundaries don't follow ZIP codes exactly, so check your phone number to be sure.

What usually runs on these lines

  • Fire alarm and security panels that dial out
  • Elevator emergency phones
  • Fax machines
  • Gate and call boxes
  • Card terminals and ATMs
  • Main business lines and phone systems

Get a plan for your lines in Colby

Tell us what runs on your Frontier lines. We'll tell you which are affected and what we'd replace them with: business VoIP for phones and fax, and Ooma AirDial for alarm panels, elevator phones and other equipment. No obligation.

Prefer to talk? Call 623-307-5548.

What are your lines used for? (check any)

Nearby areas

Based on public FCC filings and telephone exchange data, updated as new filings appear. Not legal or regulatory advice.