Area code

OH

United States geographic area code, in service since 1947-01-01. Part of the 380/614 overlay complex — ten-digit dialing required.

Created 740. Created 380. Overlaid with 380 .

Statusin service

Introduced1947-01-01

JurisdictionOH, US

Local dialing10D

Time zoneEastern

Last verified2026-09-17

Utilization 100.6% of assignable prefixes assigned As of 09/17/2026

0%797 of ~792 assignable NXX values (200–999 excl. N11)100%

Prefix-level assignment does not equal number-level exhaustion; thousands-block pooling extends capacity. First assignment on record 2001-01-05, most recent 2025-04-07.

Area codes serve rate-center geographies, not municipal boundaries. “OH” identifies the jurisdiction, not an exact city footprint.

Top assignees

Ranked by assigned prefixes · initial assignee ≠ current carrier

Largest initial assignees in area code 614
Rank	Assignee	Prefixes	Share
01	OHIO BELL TEL CO	254	31.9%
02	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH	96	12%
03	AERIAL COMMUNICATIONS, INC.	89	11.2%
04	NEW CINGULAR WIRELESS PCS, LLC - IL	46	5.8%
05	PAETEC ITEL, LLC	44	5.5%
06	LEVEL 3 COMMUNICATIONS, LLC - OH	41	5.1%
07	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH	35	4.4%
08	LEVEL 3 TELECOM OF OHIO, LLC - OH	29	3.6%
09	TELEPORT COMMUNICATIONS AMERICA, LLC - OH	24	3%
10	BANDWIDTH.COM CLEC, LLC - OH	21	2.6%

Important: these are initial assignees from NANPA CO-code records — the carrier a prefix was originally assigned to. Because of number portability, the current serving carrier of any individual number may differ.

Change history

Recorded events for this NPA

2015-02-20 NPA 380 to Overlay NPA 614 (Ohio) overlay
1997-04-07 Declaration of Jeopardy Situation in NPA 614 (Ohio) jeopardy
1947-01-01Area code 614 entered service.

Planning letters & orders

Primary documents

NANPA planning letters for area code 614
Date	Document	Subject
2015-02-20	PL-477 ↗	NPA 380 to Overlay NPA 614 (Ohio)
2002-03-25	PL-317 ↗	Suspension of 614/380 NPA Overlay (Ohio)
2001-08-17	PL-297 ↗	Revison of PL-290; Creating 380 NPA (Ohio)
2001-08-02	PL-290 ↗	NPA 380 to Overlay NPA 614 (Ohio)

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