Identify who called from an unknown California landline or cell phone number using our free reverse phone lookup service. Search a phone number to find the caller's name, address, carrier, and other details. Identify the unknown callers, verify California businesses, or research potential scam calls.
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Reverse phone lookup lets California residents identify unknown callers by revealing the name and address tied to any phone number. Our phone search lookup service searches open databases from government records to help you answer "who called me from this phone number." Whether you're in Los Angeles or a small town, this reverse call search helps you screen calls, avoid fraud, and stay safe from scammers.
All California phone numbers consist of three parts: the three-digit Area Code, the three-digit Prefix Code (also known as the exchange or central office code), and the final four-digit line number. While the area code narrows down the location to a large region, the prefix code can often specify the original city or town where the number was registered.
Here's a complete list of California area codes:
Location: The 209 and 350 area codes cover central California's San Joaquin Valley and northern foothills, including major cities like Stockton, Modesto, and Merced.
Common Callers: Seasonal labor contractors, winery supply chain coordinators (Gallo), and UC Merced admissions.
Scams and Spam Calls: The 209 and 350 area codes are heavily targeted by "Process Server" and Civil Complaint threats. Common scams include "Simply Sell" Real Estate text spam, Student Loan Forgiveness schemes (specifically "Allison"), Social Security arrest threats, and Utility Shutoff scams.
Location: The 213 and 323 area codes cover central Los Angeles, California, including downtown Los Angeles, Hollywood, and East Los Angeles.
Common Callers: USC alumni relations, casting directors or talent agents, fashion district wholesalers, and County of Los Angeles social services.
Scams and Spam Calls: The 213 and 323 area codes frequently report the "Chinese Consulate" Impersonation scam and LADWP Utility Shutoff threats. Residents face "2-Hour" Fake Process Server warnings, Social Security Arrest threats, Crypto/Investment scams, and aggressive Home Improvement telemarketing.
Location: The 279 and 916 area codes cover the greater Sacramento area in California, including major cities like Sacramento, Elk Grove, and Roseville.
Common Callers: California State Tax Franchise Board agents, legislative aides, Sutter Health nurse lines, and political lobbyists.
Scams and Spam Calls: The 279 and 916 area codes deal with Social Security Arrest threats and Fake Process Server/Lawsuit scams. Impersonation of utilities (Comcast/Xfinity) and Tech Support (Microsoft) is common, as are unsolicited Real Estate texts (e.g., "Alice") and Publishers Clearing House scams.
Location: The 310 and 424 area codes cover western and southwestern Los Angeles County, California, including major cities like Santa Monica, Beverly Hills, and Torrance.
Common Callers: Talent agency assistants, Snap/Google tech recruiters, UCLA Health appointment desks, and luxury hotel concierges.
Scams and Spam Calls: Residents in the 310 and 424 area codes report Apple Support and iCloud Breach impersonators alongside Tech Support/Subscription Renewal scams. Legal threats are common, including Fake Process Server, Debt Collection Lawsuits, and Social Security Suspension scams.
Location: The 341 and 510 area codes cover the East Bay region of the San Francisco Bay Area in California, including major cities like Oakland, Berkeley, and Fremont.
Common Callers: UC Berkeley administrative offices, Tesla factory HR (Fremont), Kaiser Permanente HQ support, and port logistics dispatchers.
Scams and Spam Calls: The 341 and 510 area codes see specific targeting of law offices ("Kenyon Hall" scam) and Kaiser Permanente/Medicare impersonation. Broader threats include Social Security and IRS Arrest Warrants, Fake Purchase/Refund scams, and various Legal and Debt Collection threats.
Location: The 369 and 707 area codes cover the North Coast region of California, including major cities like Santa Rosa, Vallejo, and Eureka.
Common Callers: Wine club subscription services, cannabis distribution sales, and Mare Island maritime contractors.
Scams and Spam Calls: The 369 and 707 area codes encounter Government Grant harassment and aggressive Stalker/Intimidation threats. Common scams also include Social Security Arrest warrants, Medicare/Health Insurance robocalls, Amazon Fake Purchase alerts, and Tech Support impersonation.
Location: The 408 and 669 area codes cover the southern San Francisco Bay Area in California, including major cities like San Jose, Sunnyvale, and Santa Clara.
Common Callers: Technical support from Cisco/Adobe, PayPal/eBay fraud protection services, and San Jose State University staff.
Scams and Spam Calls: The 408 and 669 area codes are hotspots for Apple/iCloud Security Breach scams and Microsoft Tech Support fraud. PG&E Utility Disconnection threats are frequent, along with Social Security Fraud alerts, Amazon Purchase scams, and aggressive Real Estate offers.
Location: The 415 and 628 area codes cover San Francisco, Marin County, and northeastern San Mateo County in California, including cities like San Francisco, San Rafael, and Novato.
Common Callers: Salesforce account executives, Uber driver support agents, UCSF Medical Center patient scheduling, and wealth management advisors.
Scams and Spam Calls: The 415 and 628 area codes report the "Chinese Consulate" Robocall and specific "Blue Shield" insurance scams. Financial fraud is prominent, including Bank Security alerts, Cash App compromised threats, Amazon Purchase verification, and fake AT&T/DMV phishing.
Location: The 442 and 760 area codes cover a large portion of Southern California, including the Mojave Desert and Imperial Valley, with major cities like Oceanside, Palm Springs, and Victorville.
Common Callers: Marine Corps Base Camp Pendleton housing admin, timeshare sales agents (Palm Springs), and renewable energy land surveyors.
Scams and Spam Calls: In the 442 and 760 area codes, Utility Disconnection threats (often impersonating SCE) and Social Security "Legal Action" scams are widespread. Residents also face Tech Support viscams, Fake Debt Collection (VHA/BHA), Police/Firefighter Fundraisers, and Student Loan Forgiveness schemes.
Location: The 530 area code covers northeastern California, including major cities like Redding, Chico, and Auburn.
Common Callers: UC Davis Veterinary Hospital scheduling, ski resort reservation desks (Tahoe), and forestry service alerts.
Scams and Spam Calls: The 530 area code is targeted by the "$299 Subscription Renewal" scam and Google Business Listing schemes. Other frequent complaints include Social Security/Federal Arrest Warrant threats, Fake Debt Collector/Process Server calls, and Extended Auto Warranty robocalls.
Location: The 559 area code covers the central San Joaquin Valley in California, including major cities like Fresno, Visalia, and Madera.
Common Callers: IRS tax examiners (processing center), dairy supply sales representatives, and CSU Fresno admissions.
Scams and Spam Calls: The 559 area code is dealing with high volumes of PG&E Power Shut-Off scams and Medicare "Final Notice" calls. Social Security Administration (SSA) impersonation, Fake Process Server threats, Amazon Purchase notifications, and Apple iCloud Support scams are also common.
Location: The 562 area code covers southeastern Los Angeles County and a small part of northern Orange County in California, including major cities like Long Beach, Norwalk, and Downey.
Common Callers: Port of Long Beach freight coordinators, VA hospital appointment lines, and aerospace manufacturing recruiters.
Scams and Spam Calls: The 562 area code reports frequent "We Want To Buy Your House" Real Estate scams and Fake Process Server threats. Aggressive Auto Warranty robocalls, Social Security/IRS impersonation, and Phony State Disability/Health Insurance calls are also common.
Location: The 619 and 858 area codes cover the southern and central parts of San Diego County, California, including major cities like San Diego, Chula Vista, and El Cajon.
Common Callers: Navy personnel/recruiters, biotech headhunters (Illumina/Pfizer), UCSD Health patient advocates, and SeaWorld group sales.
Scams and Spam Calls: The 619 and 858 area codes deal with "County of San Diego" and Social Security impersonation scams. Specific schemes include the "Casey Brooks" Student Loan call, Google Business Listing threats, Medicare/Health Insurance phishing, and fake Tech Support/Amazon alerts.
Location: The 626 area code covers the San Gabriel Valley in Los Angeles County, California, including major cities like Pasadena, Alhambra, and West Covina.
Common Callers: Kaiser Permanente appointment center, Caltech administrative staff, and JPL government contractors.
Scams and Spam Calls: The 626 area code gets Aggressive IT & Business Sales calls and "Can You Hear Me?" voice phishing. Social Security Arrest threats are common, along with Fake Amazon Purchase scams, Bogus Legal Action/Debt Collection threats, and Vehicle Warranty expiration calls.
Location: The 650 area code covers the San Mateo County and northwestern Santa Clara County regions of California, including major cities like San Mateo, Palo Alto, and Redwood City.
Common Callers: Venture capital executive assistants, Meta (Facebook) recruiters, Stanford Hospital billing, and Genentech researchers.
Scams and Spam Calls: The 650 area code is heavily targeted by Google-related scams, including "Google My Business" listing threats and Account Security compromises. Tech Support "Firewall Breach" scams, Phony Medical/COVID test bills, and Social Security suspension threats are also reported.
Location: The 657 and 714 area codes cover northern and central Orange County, California, including major cities like Anaheim, Santa Ana, and Huntington Beach.
Common Callers: Disneyland Resort reservation agents, Orange County jury duty summons (follow-up), and UCI Medical Center staff.
Scams and Spam Calls: The 657 and 714 area codes face specific business scams like "Kurt - Are You The Real Deal?" and Aggressive Home Improvement telemarketing. Smishing (Fake Delivery/Package texts) is rampant, alongside Student Loan Forgiveness scams, Social Security threats, and AT&T Refund hoaxes.
Location: The 661 area code covers the majority of Kern County and parts of northern Los Angeles County in California, including major cities like Bakersfield, Valencia, and Santa Clarita.
Common Callers: Oil rig staffing agencies, Six Flags season pass sales, and aerospace defense contractors (Palmdale/Edwards AFB).
Scams and Spam Calls: In the 661 area code, Fake "Car Decal" Job Offer scams and Utility Disconnection threats are frequent. Residents also report persistent Social Security Administration (SSA) impersonation, Fake Process Server scams, Student Loan Forgiveness calls, and Amazon/Tech Support fraud.
Location: The 747 and 818 area codes cover the San Fernando Valley region of Los Angeles County, California, including major cities like Van Nuys, North Hollywood, and Glendale.
Common Callers: Studio production assistants (Warner Bros/Disney), post-production scheduling, and Kaiser nurse advice lines.
Scams and Spam Calls: The 747 and 818 area codes report dangerous Cartel Extortion scams and Vague "Amy" Voicemail bait. Common schemes include Microsoft/Tech Support Subscription scams, Fake Process Server threats, Government Energy Program hoaxes, and the "You Won the Mall Raffle" scam.
Location: The 805 and 820 area codes cover the central coast and parts of Southern California, including major cities like Oxnard, Thousand Oaks, and Santa Barbara.
Common Callers: Amgen clinical trial coordinators, UCSB housing admin, and Vandenberg Space Force Base personnel.
Scams and Spam Calls: The 805 and 820 area codes experience iPhone Ransom & Browser Lock scams and Phantom Medical Debt Collection. Residents frequently encounter Social Security Suspension threats, Tech Support/Subscription scams, Fake Bank Authorization texts, and Health Insurance "Open Enrollment" scams.
Location: The 831 area code covers the California central coast area, including major cities like Santa Cruz, Salinas, and Monterey.
Common Callers: Agricultural produce brokers, UCSC alumni relations, and luxury golf resort booking agents (Pebble Beach).
Scams and Spam Calls: The 831 area code is dealing with specific PG&E Rebate and Energy Saving scams alongside Fake "Economic Development" Business Location calls. Broader threats include Threatening Lawsuit/Arrest scams, Social Security Fraud alerts, and Automatic Subscription Renewal schemes.
Location: The 840 and 909 area codes cover southwestern San Bernardino County and eastern Los Angeles County in California, including major cities like San Bernardino, Riverside, and Ontario.
Common Callers: Amazon fulfillment center HR, trucking logistics dispatchers, and Ontario Airport administration.
Scams and Spam Calls: The 840 and 909 area codes are targeted by Phantom Debt Collection scams and Microsoft Tech Support fraud. Fake Process Server and IRS Arrest Warrant threats are common, as are Amazon Purchase Confirmation calls and Extended Auto Warranty robocalls.
Location: The 925 area code covers the Diablo Valley and eastern San Francisco Bay Area in California, including major cities like Concord, Walnut Creek, and Pleasanton.
Common Callers: Chevron corporate HR, Workday sales representatives, and Lawrence Livermore Lab recruiters.
Scams and Spam Calls: The 925 area code reports "Friend Impersonation" Text scams and PG&E Utility impersonators. Social Security "Legal Action" threats are standard, along with Publishers Clearing House (PCH) scams, Fake Lawsuit/Debt Collection threats, and Computer Subscription Refund schemes.
Location: The 949 area code covers southern Orange County, California, including major cities like Irvine, Newport Beach, and Laguna Niguel.
Common Callers: UCI Medical Center billing, video game developer recruiters (Blizzard), and PIMCO financial advisors.
Scams and Spam Calls: The 949 area code is targeted by Fake "Business Line of Credit" offers and IRS "Fresh Start" Relief scams. Student Loan Forgiveness calls are frequent, as are Phony Legal Action/Wage Garnishment threats and Medicare "Free Brace" scams.
Location: The 951 area code covers western Riverside County in California, including major cities like Riverside, Corona, and Temecula.
Common Callers: University of California Riverside (UCR), March Air Reserve Base, Pechanga Resort Casino, and wineries in the Temecula Valley.
Scams and Spam Calls: The 951 area code faces Aggressive Solar and Home Improvement telemarketing and Publishers Clearing House (PCH) scams. Residents also deal with Social Security Number Suspension scams, Fake Lawsuit/Debt Collection threats, and IRS Tax Fraud Arrest Warrant schemes.
For latest California phone numbering regulations, contact Siamack "Bubba" Donighi at the California PUC via [email protected] or 916-894-5642.
California has approximately 57.9 million active phone numbers. Cell phones are the dominant service with 48.7 million users, while traditional landlines are declining with 1.6 million connections statewide. Internet phone services account for about 7.5 million numbers.
This indicates that when you search a California phone number, it's very likely a cell phone. The continued decrease in landlines suggests that newer phone numbers may be more challenging to trace compared to older landline numbers that historically had more readily available public information.
California Voice Subscriptions (in thousands):
| Service Type | June 2023 | Dec 2023 | June 2024 |
|---|---|---|---|
| Mobile telephony | 47,209 | 48,351 | 48,696 |
| Local exchange telephone service | 2,274 | 2,115 | 1,646 |
| VoIP subscriptions | 7,864 | 7,521 | 7,549 |
| Total | 57,347 | 57,987 | 57,891 |
Source: FCC Voice Telephone Services Report
Most phone numbers are cell phones, and most cell phone numbers come from the top three United States wireless companies. Here are the top five US Cell Phone Companies in Q1 2025:
California residents experienced a decrease in unwanted calls in 2024, with complaints totaling 287,916—a decrease from the peak of 622,417 complaints in 2021, according to the latest National Do Not Call Registry Data Book.
Key Facts for California Residents:
According to the Federal Trade Commission's 2024 data, phone calls and text messages make up 35% of all fraud contact methods nationwide:
More than 1 in 3 fraud attempts happen through phone communication. Phone call fraud costs victims a median of $1,500 per case. Text message fraud costs a median of $1,000 per victim.
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. With phone-based fraud representing such a significant portion of these cases, phone owner verification has become a critical consumer protection tool.
When you receive calls from unknown numbers, take a moment to research the caller's identity. Reverse phone lookup services allow you to search a phone number to find information about who's calling—including whether the number has been reported for fraudulent activity.
Received fraudulent calls or fallen victim to phone fraud? Report it immediately. Each report helps authorities identify fraud patterns and protect other consumers from similar scams.
Additional Contact:
California Attorney General
Rob Bonta
(916) 445-9555
Sometimes, a simple reverse phone lookup isn't enough to identify a California phone number. If you need more information, these alternative search methods can help. With a population of over 39 million and over 1 million business establishments in California, finding the information you need might require trying a few different ways.
Social media platforms can be surprisingly useful when trying to identify a phone number. For example, if you're meeting someone new and want to verify their phone number legitimacy, social media searches can help. You can often find a phone number listed on a profile or used for account recovery.
Here are some helpful links:
If you suspect a phone number belongs to a California business, you can verify it using official state databases. This is useful if you're considering business partnerships with California companies. You can confirm their legitimacy before engaging in large purchases or contracts.
Here are some useful California state resources:
For the best results, it helps to use these methods together.
Yes, reverse phone lookups are legal in California, but your phone number and related personal information are protected under the California Consumer Privacy Act (CCPA). You have specific rights to control how businesses collect, use, and sell your phone data.
Your phone number qualifies as "personal information" under the CCPA when it can identify, relate to, or be reasonably linked to you or your household. This includes:
However, phone numbers in publicly available government records (like business licenses) are not protected under the CCPA.
As a California resident, you have five key rights regarding your phone data:
Timeline Requirements:
How to Submit Requests:
Verification Process:
Primary Enforcement:
Limited Private Lawsuits:
You can only sue businesses under very specific circumstances - when your unencrypted personal information (including phone numbers combined with other identifying data) is stolen in a data breach due to inadequate security practices. You must give the business 30 days written notice to cure violations before suing.
Exceptions:
Some information cannot be deleted, including:
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