458
Area code
OR
United States geographic area code, in service since 2010-02-10. Part of the 458/541 overlay complex — ten-digit dialing required.
Statusin service
Introduced2010-02-10
JurisdictionOR, US
Local dialing10D
Time zoneMountain / Pacific
Last verified2026-09-17
Utilization 31.1% of assignable prefixes assigned
As of 09/17/2026
0%246 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 2011-06-16, most recent 2026-09-14.
Area codes serve rate-center geographies, not municipal boundaries. “OR” 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 - OR | 48 | 19.5% |
| 02 | TON80 COMMUNICATIONS, LLC | 22 | 8.9% |
| 03 | T-MOBILE USA, INC. | 18 | 7.3% |
| 04 | NEW CINGULAR WIRELESS PCS, LLC | 17 | 6.9% |
| 05 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 16 | 6.5% |
| 06 | 15 | 6.1% | |
| 07 | BANDWIDTH.COM CLEC, LLC - OR | 10 | 4.1% |
| 08 | MULTIPLE OCN LISTING | 9 | 3.7% |
| 09 | LEVEL 3 COMMUNICATIONS, LLC - OR | 9 | 3.7% |
| 10 | INVOXIO INCORPORATED | 7 | 2.8% |
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- 2008-11-19 NPA 458 to Overlay NPA 541 (Oregon)
- 2010-02-10Area code 458 entered service (created from 541).
Planning letters & orders
Primary documents| Date | Document | Subject |
|---|---|---|
| 2008-11-19 | PL-383 ↗ | NPA 458 to Overlay NPA 541 (Oregon) |