Identify who called from an unknown California phone number. Results may include:
Our database contains over 25 million Do Not Call and robocall complaints reported to the FTC.
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California generates more Do Not Call complaints than any other state, nearly 288,000 filed to the FTC. In the 213 and 310 Los Angeles codes, callers frequently pose as IRS or Social Security agents threatening arrest. Around San Jose's 408 and 669 codes, fake tech support calls claim your computer or iCloud account has been compromised. It's easy to panic when the IRS or tech support calls. Search that number in our California reverse phone lookup first. It can often help you tell if that urgent 213 or 408 call is just a scam.
With scammers flooding California lines with everything from Chinese Consulate hoaxes to phantom debt collections, answering unknown calls is often a waste of time. Save yourself the hassle by checking the number first to see if it’s a known spammer.
Phone numbers reported as unwanted calls to the FTC by local residents in the last 30 days.
(888) 269-4978
197 reports ·
(855) 357-2024
59 reports ·
(217) 834-9977
47 reports ·
(855) 883-0403
43 reports ·
(877) 578-2110
38 reports ·
(217) 438-0791
34 reports ·
(844) 515-1201
32 reports ·
(585) 763-8145
30 reports ·
(217) 834-9840
29 reports ·
(877) 372-0925
27 reports ·
Californians face heavy volumes of SSA/IRS arrest threats, Car Warranty robocalls, and Amazon/Tech Support fraud. In 2024, California residents reported 238,705 fraud cases resulting in total losses of $1,678,703,608, with a median loss of $542 per victim. To help authorities track these criminals, you should report any fraudulent calls to:
In 2024, California residents filed 287,916 unwanted call complaints with the FTC, of which 161,548 were robocalls and 98,127 involved live callers. The most reported complaint topics were imposters (27,125), reducing debt (20,756), medical and prescriptions (13,374). You can significantly reduce the number of unsolicited calls you receive by visiting the official Do Not Call website. Visit donotcall.gov or call 1-888-382-1222 to protect your number.
Twenty-plus area codes blanket California, from 213/323 in LA to 415/628 in San Francisco, 619/858 in San Diego, and beyond. The sheer number of overlays means area codes have lost most of their meaning. Browse the table below to see all codes and cities, then search the number for the owner 's name and location.
| Area Code | Cities |
|---|---|
| 209 | Stockton, Modesto, Tracy |
| 213 | Los Angeles, East Los Angeles, Inglewood, South Gate |
| 279 | Sacramento, Elk Grove, Roseville |
| 310 | Los Angeles, Torrance, Inglewood, Compton |
| 323 | Los Angeles, East Los Angeles, Inglewood, South Gate |
| 341 | Oakland, Fremont, Hayward, Berkeley, Richmond |
| 350 | Stockton, Modesto, Tracy |
| 357 | |
| 369 | Santa Rosa, Vallejo, Fairfield |
| 408 | San Jose, Sunnyvale, Santa Clara |
| 415 | San Francisco, Daly City, San Rafael, Novato |
| 424 | Los Angeles, Torrance, Inglewood, Compton |
| 442 | Oceanside, Escondido, Victorville, Carlsbad |
| 510 | Oakland, Fremont, Hayward, Berkeley, Richmond |
| 530 | Redding, Chico, Davis |
| 559 | Fresno, Visalia, Clovis |
| 562 | Long Beach, Downey, Norwalk |
| 619 | San Diego, Chula Vista, El Cajon |
| 626 | Pasadena, El Monte, West Covina |
| 628 | San Francisco, Daly City, San Rafael, Novato |
| 650 | Daly City, San Mateo, Redwood City |
| 657 | Anaheim, Santa Ana, Irvine, Huntington Beach, Garden Grove, Orange, Fullerton, Costa Mesa |
| 661 | Bakersfield, Santa Clarita, Lancaster, Palmdale |
| 669 | San Jose, Sunnyvale, Santa Clara |
| 707 | Santa Rosa, Vallejo, Fairfield |
| 714 | Anaheim, Santa Ana, Irvine, Huntington Beach, Garden Grove, Orange, Fullerton, Costa Mesa |
| 738 | |
| 747 | Los Angeles, Glendale, Pasadena, Burbank |
| 760 | Oceanside, Escondido, Victorville, Carlsbad |
| 805 | Oxnard, Thousand Oaks, Simi Valley |
| 818 | Los Angeles, Glendale, Pasadena, Burbank |
| 820 | Oxnard, Thousand Oaks, Simi Valley |
| 831 | Salinas, Santa Cruz, Watsonville |
| 837 | |
| 840 | San Bernardino, Fontana, Rancho Cucamonga, Ontario, Pomona |
| 858 | San Diego, Chula Vista, El Cajon |
| 909 | San Bernardino, Fontana, Rancho Cucamonga, Ontario, Pomona |
| 916 | Sacramento, Elk Grove, Roseville |
| 925 | Concord, Antioch, Livermore |
| 949 | Irvine, Costa Mesa, Mission Viejo, Newport Beach |
| 951 | Riverside, Moreno Valley, Corona, Murrieta, Temecula |
Important: Area codes are no longer reliable indicators of a caller's location. Number portability allows users to keep their numbers when they move, and scammers frequently use "neighbor spoofing" to make long-distance or fraudulent calls appear local.
The 209 area code and its 350 overlay serve the San Joaquin Valley, covering Tracy, Merced, Turlock, Manteca, Lodi, Stockton, and Modesto.
Numbers starting with 213, along with the 323 and 738 overlays, connect central Los Angeles, South Gate, Florence-Graham, Montebello, Huntington Park, and Monterey Park.
In the Sacramento Valley, 916 and overlay 279 reach Arden-Arcade, Citrus Heights, Folsom, Rancho Cordova, Carmichael, Rocklin, Sacramento, Elk Grove, and Roseville.
Numbers from 310 and the 424 area code cover the Westside and South Bay regions, including Compton, Santa Monica, Carson, Inglewood, Hawthorne, Redondo Beach, Lynwood, Los Angeles, and Torrance.
The East Bay is served by the 510 area code and the 341 overlay, which include Berkeley, Richmond, San Leandro, Alameda, Union City, Castro Valley, Oakland, Fremont, and Hayward.
Numbers with 559 and 357 primarily connect the central San Joaquin Valley, reaching Clovis, Madera, Tulare, Porterville, Hanford, Fresno, and Visalia.
Across the North Bay, 707 and overlay 369 cover Vacaville, Napa, Petaluma, Santa Rosa, Vallejo, and Fairfield.
The 408 area code and its 669 overlay are used in the South Bay, covering Milpitas, Cupertino, San Jose, Sunnyvale, and Santa Clara.
Numbers starting with 415 and the 628 overlay serve the San Francisco Peninsula and Marin County, connecting San Rafael, Novato, Daly City, Mill Valley, and San Francisco.
In southeastern California, 760 and overlay 442 reach Carlsbad, Vista, Hesperia, San Marcos, Indio, Apple Valley, Oceanside, Escondido, and Victorville.
Numbers with 530 and the 837 area code come from northern California, covering Chico, Davis, Yuba City, Woodland, and Redding.
The San Diego area relies on the 619 area code and the 858 overlay to serve El Cajon, National City, La Mesa, Santee, Chula Vista, and San Diego.
Numbers from 714 and 657 cover northern Orange County, including Garden Grove, Orange, Fullerton, Westminster, Buena Park, Costa Mesa, Anaheim, Santa Ana, and Huntington Beach.
In the San Fernando Valley, 818 and the 747 area code cover San Fernando, Calabasas, Los Angeles, Glendale, and Burbank.
The Central Coast is covered by the 805 area code and overlay 820, reaching Santa Maria, Santa Barbara, Camarillo, Oxnard, Simi Valley, and Thousand Oaks.
Numbers starting with 909 and the 840 overlay serve the Inland Empire, connecting Ontario, Pomona, Rialto, Chino, Upland, Chino Hills, San Bernardino, Fontana, and Rancho Cucamonga.
The 562 area code serves southeastern Los Angeles County, covering Whittier, Lakewood, Bellflower, Pico Rivera, South Whittier, Paramount, Long Beach, Downey, and Norwalk.
Numbers with 626 come from the San Gabriel Valley, reaching Alhambra, Baldwin Park, Arcadia, Rosemead, Glendora, Hacienda Heights, Pasadena, El Monte, and West Covina.
On the San Francisco Peninsula, 650 connects San Mateo, Daly City, Redwood City, Mountain View, South San Francisco, and Palo Alto.
Numbers starting with 661 are used in central California, including Palmdale, Delano, Bakersfield, Santa Clarita, and Lancaster.
The 831 area code serves the Monterey Bay area, reaching Salinas, Santa Cruz, Watsonville, Hollister, and Seaside.
In the inland East Bay, 925 covers Livermore, San Ramon, Pleasanton, Walnut Creek, Pittsburg, Brentwood, Concord, and Antioch.
Numbers from 949 primarily connect southern Orange County, covering Mission Viejo, Newport Beach, Lake Forest, San Clemente, Laguna Niguel, Costa Mesa, and Irvine.
The 951 area code serves western Riverside County, including Murrieta, Temecula, Hemet, Menifee, Perris, Lake Elsinore, Riverside, Moreno Valley, and Corona.
Yes, California residents can legally use reverse phone lookup services for personal reasons, including identifying mystery callers and detecting scams. However, using results for job screening, rental applications, or credit checks is not allowed under Fair Credit Reporting Act (FCRA) regulations.
Under CCPA/CPRA, you can request removal of your phone number and personal details from reverse lookup services. Visit each site and click "Do Not Sell or Share My Personal Information" to submit a deletion request.
A reverse phone lookup can provide a business name, but that alone does not confirm legitimacy. While California has over 1,023,181 business establishments based on Census data, you should verify the company by searching for it in the California Business Search.
California has 7.5 million VoIP subscriptions, more than the total phone subscriptions in most states. Tech adoption and remote work explain part of this, though mobile numbers still dominate at 48.7 million. Traditional landlines represent only 1.6 million.