Area Code 310: West LA / South Bay Phone Number Lookup

What Is Area Code 310?

Area code 310 is a California telephone area code serving the western and southwestern portions of Los Angeles County, broadly known as West LA and the South Bay. Its footprint includes some of the most recognizable communities in the country: Beverly Hills, Santa Monica, Malibu, Inglewood, El Segundo, Hawthorne, Torrance, Redondo Beach, Hermosa Beach, Manhattan Beach, Culver City, and the Palos Verdes Peninsula, among others. The area code also covers the unincorporated communities along the coast and reaches inland to portions of the San Fernando Valley's western edge.

310 was created on November 2, 1991, when it split from the original 213 area code, which had served all of Los Angeles County since the North American Numbering Plan was established in 1947. As Southern California's population exploded and demand for telephone numbers outpaced supply, regulators carved 310 out to serve the western half of the county. In 2006, the 424 overlay area code was introduced to supplement 310 after its number pool became critically depleted, meaning both area codes now serve the same geographic territory and new subscribers may be assigned either prefix.

West LA / South Bay Cities and Coverage Area

Area code 310 blankets dozens of distinct communities stretching from the Santa Monica Mountains down to the tip of the Palos Verdes Peninsula and across the South Bay coastline.

• Santa Monica — A coastal city home to Santa Monica College, the Third Street Promenade, and major healthcare campuses including Providence Saint John's Health Center.
• Beverly Hills — Famous for Rodeo Drive and celebrity residences, it hosts major talent agencies, luxury hotels, and Cedars-Sinai Medical Center nearby on its border.
• Inglewood — A rapidly redeveloping South Bay city anchored by SoFi Stadium, the Kia Forum, and Hollywood Park, and home to Los Angeles International Airport's immediate neighbor communities.
• Culver City — A creative industry hub housing Amazon Studios, Sony Pictures Entertainment, and a thriving arts district along Culver Boulevard.
• Manhattan Beach — An affluent coastal South Bay city known for its pier, beach volleyball culture, and headquarters of major companies including Skechers USA.
• Torrance — The largest South Bay city by area, home to Toyota's North American headquarters, Torrance Memorial Medical Center, and El Camino College.
• Malibu — A 21-mile coastal enclave in the Santa Monica Mountains known for its celebrity estates, Pepperdine University, and Pacific Coast Highway corridor.
• El Segundo — A small but commercially dense city anchoring the aerospace corridor with employers such as Raytheon and Northrop Grumman, and located directly adjacent to LAX.
• Redondo Beach — A seaside South Bay community with a busy pier, a large marina, and residential neighborhoods popular with aerospace and tech workers.
• Palos Verdes Estates — A hillside enclave on the Palos Verdes Peninsula offering dramatic ocean views, equestrian trails, and some of the highest property values in Los Angeles County.

The 424 area code serves as a full overlay across the entire 310 geographic region, so calls from 424 numbers originate from the same West LA and South Bay communities and should be evaluated with the same scrutiny.

Common Scam Calls from Area Code 310

IRS and Government Impersonation

Scammers frequently spoof 310 numbers to pose as IRS agents, Social Security Administration representatives, or Los Angeles County sheriff's deputies, knowing that a local-looking number lends false credibility. Targets in the South Bay and West LA areas have reported receiving threatening calls claiming unpaid tax debts or suspended Social Security numbers, with callers demanding immediate payment via wire transfer or prepaid gift cards to avoid "arrest."

Utility Shutoff Threats

Fraudsters impersonating Southern California Edison or the Los Angeles Department of Water and Power (LADWP) call with urgent warnings that service will be disconnected within the hour unless a payment is made immediately over the phone. Because 310-area residents genuinely use these utilities, the ruse is particularly convincing. Real utility companies will never demand same-day payment by phone to avoid shutoff.

Entertainment Industry and Casting Scams

Given the concentration of studios, talent agencies, and production companies in Culver City, Beverly Hills, and Santa Monica, scammers exploit the 310 prefix to pose as casting directors or talent scouts. They promise roles or modeling contracts in exchange for upfront "registration fees" or request personal financial information for a fake direct-deposit setup, targeting aspiring actors and models throughout Los Angeles County.

Mortgage and Real Estate Fraud

With some of the highest real estate values in the nation, the 310 corridor is a prime target for mortgage relief scams. Callers claim to represent lenders or government housing agencies and offer dramatically reduced interest rates or foreclosure rescue services, asking homeowners to pay fees in advance or to sign over limited power of attorney — surrendering control of their property in the process.

How to Look Up a 310 Phone Number

If you've received an unfamiliar call from a 310 number, these steps will help you identify the caller quickly and safely.

Is Area Code 310 Safe?

The vast majority of calls from 310 numbers are completely legitimate. The area code serves a dense, economically active region packed with hospitals, universities, corporations, and government offices that place millions of routine calls every day. Cedars-Sinai Medical Center, UCLA Health clinics in Santa Monica, the City of Los Angeles, Los Angeles County offices, Northrop Grumman, and hundreds of law firms and financial institutions all operate within the 310 footprint and routinely call patients, clients, employees, and residents using numbers bearing this prefix.

The complication is spoofing. Modern voice-over-IP technology allows anyone anywhere in the world to display any number they choose on your caller ID — including a legitimate 310 number belonging to a real local business. This means that a call appearing to come from a Beverly Hills law firm or a Santa Monica clinic could in fact originate from a fraud operation thousands of miles away. The area code alone tells you nothing definitive about whether a call is safe.

Context is your best guide. If you were expecting a call from a West LA business or institution, a 310 number makes sense. If the call is unsolicited, the caller is creating urgency, or the request involves money or personal information, treat it with caution regardless of what the caller ID displays, and verify through an independently sourced phone number before taking any action.

How to Block 310 Numbers

On iPhone

Open the Phone app and navigate to your Recent Calls list. Tap the information icon (ⓘ) next to the 310 number you want to block, then scroll to the bottom and select "Block this Caller." iOS will prevent that specific number from calling, sending texts, or reaching FaceTime. You can review or remove blocked numbers at any time under Settings → Phone → Blocked Contacts.

On Android

Open the Phone app and locate the number in your call log. Press and hold the entry or tap the three-dot menu, then select "Block number" or "Block/report spam." On Samsung devices, you can also go to Settings within the Phone app and manage a full block list. Google Pixel phones include a built-in Call Screen feature that uses automated assistants to answer and transcribe suspicious calls before they reach you.

Through your carrier

• Verizon — Call Filter (free tier) automatically labels suspected spam calls and allows manual number blocking; the paid Call Filter Plus tier adds a personal spam list and reverse number lookup directly within the app.
• AT&T — ActiveArmor provides free real-time fraud call blocking, spam risk warnings, and a quarantine inbox for suspected robocalls; the Advanced tier adds enhanced identity monitoring features.
• T-Mobile — Scam Shield comes free for all T-Mobile customers and includes Scam Likely labeling, scam call blocking, and a free proxy number option; the premium tier adds Caller ID and reverse lookup capabilities.

Apps & the Do Not Call list

Third-party apps such as Nomorobo, Hiya, and RoboKiller maintain constantly updated databases of known robocall and scam numbers and can intercept unwanted 310 calls before your phone ever rings. For telemarketing calls specifically, registering your number at donotcall.gov places you on the National Do Not Call Registry, which legitimate telemarketers are legally required to honor.

Recent Reports from 310 Numbers

The following are representative examples of call types recently reported by consumers who received calls from 310 numbers.

Got a suspicious 310 call? Report it to the FTC at reportfraud.ftc.gov.

Frequently Asked Questions About Area Code 310