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Which company holds the phone exchange?

Incumbent local telephone company territories from PUCO, the exchange areas the legacy landline carrier holds. Cable, fiber and wireless providers compete inside them and are not mapped.

1,227 of 1,233 ZIPs have data.

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AT&T Ohio · 429 Frontier · 373 altafiber (Cincinnati Bell) · 74 Brightspeed (formerly CenturyLink) · 226 Windstream · 70 Independent local companies · 55 No data · 6

Source

PUCO Telecom map service, layer 7 ILEC Company Service Area (incumbent local exchange carriers, fetched 2026-09-08) by resident share of 2020 census blocks

PUCO telephone

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Quick answers

Which phone companies serve Ohio?

Across Ohio's ZIP codes: AT&T Ohio, 429 ZIP codes; Frontier, 373 ZIP codes; altafiber (Cincinnati Bell), 74 ZIP codes; Brightspeed (formerly CenturyLink), 226 ZIP codes; Windstream, 70 ZIP codes; Independent local companies, 55 ZIP codes; No data, 6 ZIP codes. Incumbent local telephone company territories from PUCO, the exchange areas the legacy landline carrier holds.

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Cracked Buckeye, "Phone", https://crackedbuckeye.com/topics/phone/, built 2026-10-31, accessed [date].

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