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Area Code Overview
Area code 442 is a geographic telephone area code in California that went into service on November 21, 2009. The geographic regions covered by this area code overlay has a population of approximately 3,063,033.
Overlay and Dialing Rules
- Area Code: 442
- State: California
- Type: General Purpose Code
- In Service Date: November 21, 2009
- Overlay Complex: 442/760
- Local Dialing Plan: This area requires you to dial 1 and the area code when calling locally.
Estimated Number of Assigned Phone Numbers in Area Code 442
This area code is ranked 256th out of 363 nationwide in estimated assigned phone numbers. Within the state territory it serves, it is ranked 28th out of 39.
3,090,000
Estimated Service-Type Mix of Assigned Phone Numbers in Area Code 442
Wireless
1,625,000 assigned
52.59%
Wireline and VoIP
1,275,000 assigned
41.26%
Other / Unclassified
190,000 assigned
6.15%
Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Area Code 442
Estimated assigned wireless phone numbers: 1,625,000
Numbers may later be ported to another carrier, but this chart reflects original number assignment, not current subscriber share.
AT&T Wireless 690,000 (42.46%)
T-Mobile 604,000 (37.17%)
Verizon Wireless 328,000 (20.18%)
Optimum Mobile 3,000 (0.18%)
Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Area Code 442
Estimated assigned wireline and VoIP phone numbers: 1,275,000
Spectrum 129,000 (10.12%)
Bandwidth 105,000 (8.24%)
Peerless Network 93,000 (7.29%)
TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 36,000 (2.82%)
Comcast Business 18,000 (1.41%)
TERRA NOVA TELECOM INC. 14,000 (1.10%)
Other / Unclassified Assigned Numbering in Area Code 442
Estimated assigned other or unclassified phone numbers: 190,000
FRACTEL, LLC 54,000 (28.42%)
TELEPORT COMMUNICATIONS AMERICA, LLC - CA 30,000 (15.79%)
TON80 COMMUNICATIONS, LLC 27,000 (14.21%)
INTEGRATED PATH COMMUNICATIONS, LLC - CA 23,000 (12.11%)
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 18,000 (9.47%)
HD CARRIER LLC 6,000 (3.16%)
IP HORIZON LLC 6,000 (3.16%)
MCC TELEPHONY OF THE WEST, LLC - CA 2,000 (1.05%)
AIRESPRING, INC. 1,000 (0.53%)
EXIANT COMMUNICATIONS LLC 1,000 (0.53%)
FIVE9, INC. 1,000 (0.53%)
Cities and Towns in Area Code 442
Baker, California Barstow, California Benton, California Big Pine, California Bishop, California Blythe, California Boron, California Borrego, California Brawley, California Bridgeport, California Calexico, California California City, California Calipatria, California Cima, California Crowley Lake, California Death Valley, California Desert Center, California Desert Hot Springs, California Eaglet, California Earp, California El Centro, California El Mirage, California Encinitas, California Escondido, California Fallbrook, California Fort Irwin, California Havasu Lake, California Holtville, California Homestead Valley, California Imperial, California Independence, California Indio, California Inyokern, California Joshua Tree, California Julian, California June Lake, California Kernville, California Lake Isabella, California Lee Vining, California Lenwood, California Lone Pine, California Lucerne Valley, California Mammoth Lakes, California Morongo Valley, California Mountain Pass, California Needles, California New Auberry, California Oceanside, California Ocotillo, California Olancha, California Palm Desert, California Palm Springs, California Palo Verde, California Parker Dam, California Pauma Valley, California Pinyon Crest, California Ramona, California Randsburg, California Ridgecrest, California Salton, California San Diego, California San Marcos, California Shoshone, California Summit, California Trona, California Twentynine Palms, California Valley Center, California Victorville, California Vista, California Warner Springs, California Weldon, California Winterhaven, California Wrightwood, California Yucca Valley, California These geographic regions are also served by area code 760.
How These Figures Were Built
These figures are estimates based on public phone-number assignment records. They are meant to show the likely mix of assigned phone numbers associated with area code 442, not live customer counts.
Some providers may have assigned phone numbers tied to this area code even if they do not actively market or sell service locally. These figures reflect public number-assignment records, not confirmed local service availability.
They also do not reflect number portability at the individual phone-number level, so some numbers may now be used on a different network or by a different provider than the original assignment records suggest.
Population data and locality matching provided by GeoNames.
Last refreshed: April 15, 2026 6:22 pm