Use our free California reverse phone lookup service to search any cell/mobile, landline, or VoIP number. Check whether an unknown number has been reported for making spam or robocalls in 3,409,048 Do Not Call and robocall complaints reported to FTC from California.
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.
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.
In September 2026, California residents filed 25,650 complaints to the FTC about phone numbers making unwanted calls and text messages, up 12% from the previous month.
California phone numbers recently reported for making unwanted sales calls or robocalls:
| Phone Number | FTC Complaints | Last Reported |
|---|---|---|
| (562) 745-6830 | ||
| (369) 216-6437 | ||
| (562) 574-3803 | ||
| (213) 246-3439 | ||
| (925) 693-4915 | ||
| (369) 216-6437 | ||
| (619) 888-1149 | ||
| (818) 917-8252 | ||
| (916) 558-1700 | ||
| (562) 745-6830 |
Look up phone numbers and browse the phone directory for the largest cities in California.
If a caller claims to be from a government office in California, or you need an official number, these government directories let you check it at the source.
The CA.gov Contact page routes you to the right office instead of listing numbers itself. "Find a department" opens the department directory, where each department shows its contact information and the services it provides. Separate links cover contacting the Governor's Office and looking up your state representatives.
If you're not sure which department handles your issue, start from the service you need; the department list shows which services each one runs. For problems with the CA.gov website itself, use the Technical help link.
The State Controller's Office publishes the California Personnel Office Directory (CPOD), which holds general information for personnel staff in California state employment. Browse it by letter tab, from A to XYZ, with a separate CSU tab for California State University campuses.
Each tab lists departments alphabetically. Smaller boards that have no personnel office of their own are cross-referenced to the department that handles their HR; the Arts Council, for example, points to the Department of General Services.
A department's entry gives personnel contacts with phone numbers and emails, plus its physical address, mailing address and agency codes. It's the list to use for payroll, employment verification and HR questions about a state job. For public service lines, use the CA.gov department directory instead.
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.