Enter any California phone number and get the owner's name, address, location based on area code, and user spam reports.
Includes 3,312,069 FTC Do Not Call and robocall complaints filed by California residents.
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Got a missed call or a weird text from an unknown CA number? Whether the call is tied to a mobile line or a landline registered around Los Angeles, San Diego, San Jose, San Francisco, Sacramento, or Bakersfield, it’s hard to know who is actually calling. To find out, just type the 10-digit number into our search bar above. Our tool checks public records and user complaints to show you what matters. If the data is available, your search results will include:
Here are the top phone numbers recently reported to the FTC for making unwanted sales calls and robocalls (reported by local residents in the last 30 days):
| Phone Number | Complaints to FTC | Last Reported |
|---|---|---|
| (855) 357-2205 | ||
| (321) 499-1777 | ||
| (309) 301-1878 | ||
| (217) 394-8789 | ||
| (217) 834-9230 | ||
| (321) 499-1628 | ||
| (877) 961-0995 | ||
| (217) 834-9414 | ||
| (217) 834-9346 | ||
| (217) 834-9517 |
In April 2026, consumers from California filed 26,416 complaints about unwanted phone calls and text messages, down 8% from the previous month. 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).
Be careful when answering unknown callers. Look out for these typical phone traps targeting people across California:
If you want to track down an unknown caller in California, you can narrow your search by checking specific regional codes. Use the list below to find the area code you are looking for and see active spam alerts or common city locations for that prefix:
| Area Code | Major Cities Covered | Local Scams |
|---|---|---|
| 209 | Stockton, Modesto, Tracy | Check 209 Scams |
| 213 | Los Angeles, East Los Angeles, Inglewood, South Gate | 213 Scam Alerts |
| 279 | Sacramento, Elk Grove, Roseville | View 279 Scams |
| 310 | Los Angeles, Torrance, Inglewood, Compton | Check 310 Scams |
| 323 | Los Angeles, East Los Angeles, Inglewood, South Gate | 323 Scam Alerts |
| 341 | Oakland, Fremont, Hayward, Berkeley, Richmond | View 341 Scams |
| 350 | Stockton, Modesto, Tracy | Check 350 Scams |
| 357 | Fresno | 357 Scam Alerts |
| 369 | Santa Rosa, Vallejo, Fairfield | View 369 Scams |
| 408 | San Jose, Sunnyvale, Santa Clara | Check 408 Scams |
| 415 | San Francisco, Daly City, San Rafael, Novato | 415 Scam Alerts |
| 424 | Los Angeles, Torrance, Inglewood, Compton | View 424 Scams |
| 442 | Oceanside, Escondido, Victorville, Carlsbad | Check 442 Scams |
| 510 | Oakland, Fremont, Hayward, Berkeley, Richmond | 510 Scam Alerts |
| 530 | Redding, Chico, Davis | View 530 Scams |
| 559 | Fresno, Visalia, Clovis | Check 559 Scams |
| 562 | Long Beach, Downey, Norwalk | 562 Scam Alerts |
| 619 | San Diego, Chula Vista, El Cajon | View 619 Scams |
| 626 | Pasadena, El Monte, West Covina | Check 626 Scams |
| 628 | San Francisco, Daly City, San Rafael, Novato | 628 Scam Alerts |
| 650 | Daly City, San Mateo, Redwood City | View 650 Scams |
| 657 | Anaheim, Santa Ana, Irvine, Huntington Beach, Garden Grove, Orange, Fullerton, Costa Mesa | Check 657 Scams |
| 661 | Bakersfield, Santa Clarita, Lancaster, Palmdale | 661 Scam Alerts |
| 669 | San Jose, Sunnyvale, Santa Clara | View 669 Scams |
| 707 | Santa Rosa, Vallejo, Fairfield | Check 707 Scams |
| 714 | Anaheim, Santa Ana, Irvine, Huntington Beach, Garden Grove, Orange, Fullerton, Costa Mesa | 714 Scam Alerts |
| 738 | Los Angeles | View 738 Scams |
| 747 | Los Angeles, Glendale, Pasadena, Burbank | Check 747 Scams |
| 760 | Oceanside, Escondido, Victorville, Carlsbad | 760 Scam Alerts |
| 805 | Oxnard, Thousand Oaks, Simi Valley | View 805 Scams |
| 818 | Los Angeles, Glendale, Pasadena, Burbank | Check 818 Scams |
| 820 | Oxnard, Thousand Oaks, Simi Valley | 820 Scam Alerts |
| 831 | Salinas, Santa Cruz, Watsonville | View 831 Scams |
| 837 | Redding | Check 837 Scams |
| 840 | San Bernardino, Fontana, Rancho Cucamonga, Ontario, Pomona | 840 Scam Alerts |
| 858 | San Diego, Chula Vista, El Cajon | View 858 Scams |
| 909 | San Bernardino, Fontana, Rancho Cucamonga, Ontario, Pomona | Check 909 Scams |
| 916 | Sacramento, Elk Grove, Roseville | 916 Scam Alerts |
| 925 | Concord, Antioch, Livermore | View 925 Scams |
| 949 | Irvine, Costa Mesa, Mission Viejo, Newport Beach | Check 949 Scams |
| 951 | Riverside, Moreno Valley, Corona, Murrieta, Temecula | 951 Scam Alerts |
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.
| Voice Subscriptions (thousands) | 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
This indicates that when you search a 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.
To help authorities track phone criminals, you can report fraudulent calls and text alerts directly to these state and federal agencies:
Yes. California law does not prohibit residents from using reverse phone lookup services for personal use - but California has by far the most comprehensive privacy framework in the US, giving residents tools that simply don't exist in most other states. The Fair Credit Reporting Act (FCRA) prohibits using lookup results for employment screening, tenant decisions, or credit and insurance underwriting in every state. California's state law supplements these federal rules; it does not replace them.
California operates under the California Consumer Privacy Act / California Privacy Rights Act (CCPA/CPRA), in effect since January 1, 2020, with major CPRA amendments from January 1, 2023. What sets California apart is the 2023 Delete Act (SB 362), which directed the California Privacy Protection Agency (CPPA) to build a centralized Delete Request and Opt-Out Platform (DROP). The DROP became available to consumers on January 1, 2026, and data brokers are required to begin processing DROP deletion requests starting August 1, 2026 (Cal. Civ. Code §§ 7610–7616). That means Californians can submit a single request to remove their phone number and personal data from every registered data broker at once - a capability no other state currently offers.
Beyond the DROP, CCPA/CPRA gives California residents the right to opt out of the sale or sharing of personal information (§ 1798.120), access and correct data held about them, request deletion, and receive a portable copy. The 45-day response window applies. Unlike most state laws, CCPA/CPRA covers employees and B2B contacts in addition to consumers, and there is no blanket small-business exemption. Enforcement sits with the dedicated CPPA, not just the Attorney General.
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.