442
Area code
CA
United States geographic area code, in service since 2009-11-21. Part of the 442/760 overlay complex — ten-digit dialing required.
Statusin service
Introduced2009-11-21
JurisdictionCA, US
Local dialing1+10D
Time zonePacific
Last verified2026-09-17
Utilization 50.9% of assignable prefixes assigned
As of 09/17/2026
0%403 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 2011-06-29, most recent 2026-09-09.
Area codes serve rate-center geographies, not municipal boundaries. “CA” identifies the jurisdiction, not an exact city footprint.
Top assignees
Ranked by assigned prefixes · initial assignee ≠ current carrier| Rank | Assignee | Prefixes | Share |
|---|---|---|---|
| 01 | NEW CINGULAR WIRELESS PCS, LLC | 57 | 14.1% |
| 02 | T-MOBILE USA, INC. | 54 | 13.4% |
| 03 | FRACTEL, LLC | 51 | 12.7% |
| 04 | ONVOY, LLC - CA | 45 | 11.2% |
| 05 | 37 | 9.2% | |
| 06 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 26 | 6.5% |
| 07 | BANDWIDTH.COM CLEC, LLC - CA | 17 | 4.2% |
| 08 | MULTIPLE OCN LISTING | 10 | 2.5% |
| 09 | ONVOY SPECTRUM, LLC | 8 | 2% |
| 10 | TON80 COMMUNICATIONS, LLC | 7 | 1.7% |
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- 2008-10-23 NPA 442 to Overlay NPA 760 (California)
- 2009-11-21Area code 442 entered service (created from 760).
Planning letters & orders
Primary documents| Date | Document | Subject |
|---|---|---|
| 2008-10-23 | PL-381 ↗ | NPA 442 to Overlay NPA 760 (California) |
| 2008-05-07 | PL-377 ↗ | NPA 760 Split, Creating NPA 442 (California) |
| 2000-07-27 | PL-238 ↗ | Suspension of Splits of the 707 & 760 NPAs (California) |
| 1999-10-24 | PL-194 ↗ | NANP- Split of 760 Numbering Plan Area (NPA) with 442 NPA - California |
| 1999-02-23 | PL-160 ↗ | Extraordinary NPA-Specific Jeopardy Conservation Procedures Announced for 760 NPA (California) |