North American Numbers Source-cited · ownership disclosed
Area code
442
In service
United States · since 2009

Palm Springs / Desert & far-north San Diego (overlay)

Area code 442 is an all-services overlay of area code 760, serving the identical southeastern and far-northern coastal California region. It entered service on November 21, 2009.

The essentials Numbering data · NumberResearch · as of 2026-09-18
Place
Palm Springs / Desert & far-north San Diego (overlay)
Type
geographic
Status
in service
In service since
2009
Projected exhaust
2043 Q1

Status, dates and counts are read from NumberResearch (NANPA / CNAC / FCC records). Assignment records show initial assignees, not the carrier serving a number today.

A · Where it is

Where 442 is

Same as 760: southeastern and far-northern coastal California (Imperial, Inyo, Mono and parts of San Diego, Riverside, San Bernardino, Los Angeles and Kern counties)..

Communities served wholly or partly by 442:

Palm SpringsPalm DesertIndioVictorvilleBarstowEscondidoOceansideCarlsbadBishopMammoth Lakes

Serves the same territory as 760; representative list.

B · Relationships

How it relates to other codes

The codes 442 was split from, spawned, or shares its area with. A split divides the map and changes some numbers; an overlay shares the same ground and changes none — what's the difference?

Overlay · 2009 760 Palm Springs / Desert & far-north San Diego 442 is an all-services overlay placed over the entire 760 numbering plan area.
What's changing. All-services overlay of area code 760 since November 21, 2009; ten-digit dialing is mandatory.
C · History

How 442 got here

2009-11-21
Area code 442 added as an all-services overlay to 760; ten-digit dialing required on all local calls.
Source: Wikipedia
D · Capacity

How full it is

Prefixes assigned
403
Prefixes available
397
Thousands-blocks assigned
3,174

Prefix-assignment counts describe allocation to carriers, not how many individual numbers are in use. Full technical records: NumberResearch ↗.

Compare 442 with another code →
Sources
Wikipedia ↗
Area codes 760 and 442
NumberResearch.org ↗
Live status, dates, assignment counts and exhaust forecast — data as of 2026-09-18 (CC BY 4.0).

Place, relationships and history above are compiled by North American Numbers from the sources listed and last checked 2026-09-18. A check date is not an expert review — see how this is made. Flag an error.