326
Area code
OH
United States geographic area code, in service since 2020-03-08. Part of the 326/937 overlay complex — ten-digit dialing required.
Statusin service
Introduced2020-03-08
JurisdictionOH, US
Local dialing10D
Time zoneEastern
Last verified2026-09-17
Utilization 12.9% of assignable prefixes assigned
As of 09/17/2026
0%102 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 2020-01-22, 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 | FRACTEL, LLC | 30 | 29.4% |
| 02 | ONVOY, LLC - OH | 14 | 13.7% |
| 03 | ONVOY SPECTRUM, LLC | 10 | 9.8% |
| 04 | MULTIPLE OCN LISTING | 9 | 8.8% |
| 05 | TON80 COMMUNICATIONS, LLC | 8 | 7.8% |
| 06 | 5 | 4.9% | |
| 07 | NEW CINGULAR WIRELESS PCS, LLC - IL | 4 | 3.9% |
| 08 | COMMIO, LLC | 3 | 2.9% |
| 09 | TELEPORT COMMUNICATIONS AMERICA, LLC - OH | 2 | 2% |
| 10 | METROPCS, INC. | 2 | 2% |
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- 2018-07-03 NPA 326 to Overlay NPA 937 (Ohio)
- 2020-03-08Area code 326 entered service (created from 937).
Planning letters & orders
Primary documents| Date | Document | Subject |
|---|---|---|
| 2018-07-03 | PL-517 ↗ | NPA 326 to Overlay NPA 937 (Ohio) |