419
Area code
OH
United States geographic area code, in service since 1947-01-01. Part of the 419/567 overlay complex — ten-digit dialing required.
Statusin service
Introduced1947-01-01
JurisdictionOH, US
Local dialing10D
Time zoneEastern
Last verified2026-09-17
Utilization 101% of assignable prefixes assigned
As of 09/17/2026
0%800 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 2001-01-19, most recent 2024-02-07.
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| Rank | Assignee | Prefixes | Share |
|---|---|---|---|
| 01 | OHIO BELL TEL CO | 114 | 14.2% |
| 02 | FRONTIER NORTH, INC. - OH | 114 | 14.2% |
| 03 | BRIGHTSPEED OF NORTHWEST OHIO, INC. | 114 | 14.2% |
| 04 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 100 | 12.5% |
| 05 | NEW CINGULAR WIRELESS PCS, LLC - IL | 52 | 6.5% |
| 06 | ONVOY, LLC - OH | 50 | 6.3% |
| 07 | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 41 | 5.1% |
| 08 | QUALSTAR COMMUNICATIONS, INC. - OH | 29 | 3.6% |
| 09 | LEVEL 3 COMMUNICATIONS, LLC - OH | 27 | 3.4% |
| 10 | T-MOBILE USA, INC. | 13 | 1.6% |
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- 1947-01-01Area code 419 entered service.