380
Area code
OH
United States geographic area code, in service since 2016-02-27. Part of the 380/614 overlay complex — ten-digit dialing required.
Statusin service
Introduced2016-02-27
JurisdictionOH, US
Local dialing10D
Time zoneEastern
Last verified2026-09-17
Utilization 19.2% of assignable prefixes assigned
As of 09/17/2026
0%152 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 2016-04-07, most recent 2026-09-16.
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| Rank | Assignee | Prefixes | Share |
|---|---|---|---|
| 01 | ONVOY, LLC - OH | 42 | 27.6% |
| 02 | TELEPORT COMMUNICATIONS AMERICA, LLC - OH | 14 | 9.2% |
| 03 | NEW CINGULAR WIRELESS PCS, LLC - IL | 10 | 6.6% |
| 04 | MULTIPLE OCN LISTING | 9 | 5.9% |
| 05 | FRACTEL, LLC | 9 | 5.9% |
| 06 | AERIAL COMMUNICATIONS, INC. | 8 | 5.3% |
| 07 | BANDWIDTH.COM CLEC, LLC - OH | 7 | 4.6% |
| 08 | 5 | 3.3% | |
| 09 | ONVOY SPECTRUM, LLC | 4 | 2.6% |
| 10 | COMMIO, LLC | 4 | 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)
- 2016-02-27Area code 380 entered service (created from 614).
Planning letters & orders
Primary documents| 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) |