424 Area Code: Beverly Hills, Malibu & LA Westside Guide

Introduction

If you're still reaching Los Angeles clients with a toll-free number, you're handing your competitors a local advantage before the phone even rings. A Westside LA area code isn't just a communication detail — it's a first impression, a credibility marker, and a local trust signal all in one.

The 424 area code shares its geography with the iconic 310 area code — Beverly Hills, Santa Monica, Malibu, Culver City, and the South Bay communities where entertainment, aerospace, and Silicon Beach tech converge. Getting a 424 number means your business instantly registers as local to one of the most commercially powerful and culturally recognized regions in the world.

This guide covers every practical fact about 424: what it covers, its history, the 310 overlay relationship, time zone details, scam call awareness, and how to get a business number with the right provider.

What Is the 424 Area Code?

The 424 area code is a California telephone area code serving the western and southwestern portions of Los Angeles County. It operates as an overlay of the 310 area code, meaning both codes serve the exact same geographic region and both are equally local to residents and businesses in that territory.

Quick Facts:

Area code 424 is California's first overlay code — introduced when the existing 310 number pool could no longer keep up with demand from the region's booming mobile, VoIP, and business growth.

Because 424 overlays the 310 area code — rather than replacing it — every existing 310 number remained intact when 424 launched. New subscribers in the region may receive either a 310 or a 424 number. Both are recognized as local LA numbers. The overlay itself was approved within the national numbering framework maintained by the Federal Communications Commission.

Where Does the 424 Code Cover?

The 424 code spans a broad and diverse section of Los Angeles County, from the affluent hillside neighborhoods of Beverly Hills to the Pacific coastline of Malibu and the dense commercial corridors of the South Bay.

Westside Los Angeles

Beverly Hills is one of the most globally recognized communities in the 424 zone. Home to Rodeo Drive, major talent agencies, entertainment industry law firms, and luxury hospitality, it sets the commercial tone for the entire region. A 424 number from Beverly Hills carries an immediate prestige association across virtually every industry.

Santa Monica anchors the 424 zone's tech and creative economy. It serves as the eastern gateway of Silicon Beach, hosting major tech campuses and a dense creative services ecosystem alongside its renowned beachfront and pier. The city's combination of lifestyle appeal and commercial density makes it one of the most desirable business locations in Southern California.

Culver City has evolved into a major streaming and production hub. Sony Pictures Studios has anchored its entertainment economy for decades, and Apple TV+, Amazon Studios, and HBO have all established substantial operations there.

West Hollywood is one of the most commercially active and densely populated mid-sized cities in LA County. Known for its vibrant entertainment venues, design district, and concentration of media and hospitality businesses, it contributes significantly to the 424 zone's commercial diversity.

Playa Vista is home to the core of Silicon Beach's tech infrastructure. Google, Microsoft, and dozens of venture-backed startups occupy the former Hughes Aircraft Company site, transformed into one of the most advanced commercial tech campuses in Southern California.

Westwood houses UCLA and a surrounding cluster of corporate offices, healthcare facilities, and cultural institutions — including the Hammer Museum and the Westwood Village entertainment district.

South Bay

El Segundo sits at the center of one of the most significant aerospace and defense corridors in the United States. Lockheed Martin, Northrop Grumman, and Raytheon have major operations there.

Torrance brings a diverse economic mix including Honda's North American headquarters, strong healthcare services, and a large residential consumer base. It is one of the most economically self-sufficient cities in the South Bay.

Manhattan Beach, Hermosa Beach, and Redondo Beach form the Beach Cities — a stretch of coastal communities known for premium quality of life, strong consumer spending, and a growing hybrid professional-residential population.

Inglewood has undergone a dramatic transformation with the opening of SoFi Stadium — home to the NFL's Los Angeles Rams and Chargers — and the adjacent Kia Forum. It is now one of Southern California's premier sports and live entertainment destinations.

Hawthorne is home to SpaceX's California headquarters. Its proximity to El Segundo has made it a focal point for the commercial space industry's growth in the region.

Catalina Island and Malibu

Santa Catalina Island, located approximately 22 miles off the coast in the Pacific Ocean, falls within the 424/310 coverage area. Malibu's 27-mile Pacific Coast Highway corridor is one of the most exclusive stretches of real estate in the world, connecting high-net-worth residents, luxury hospitality operators, and entertainment industry figures who call it home.

History of the 424 Area Code

The 424 area code was officially launched on July 26, 2006, but its story begins decades earlier with the original 213 area code that once served all of Southern California.

From 213 to 310 to 424

In 1947, the entire Los Angeles region operated under the 213 area code. By November 2, 1991, demand had grown enough to carve out the 310 area code for the Westside and South Bay. Then in January 1997, the southeast portion of the 310 territory split off to become the 562 area code, leaving 310 concentrated in its current footprint.

By the late 1990s, it was already clear that 310 numbers were being exhausted by the surge in mobile devices and business growth.

The 1999 Protest and the Consumer Area Code Relief Act

What makes the 424 history unusual is the organized public resistance it encountered before it even launched. In 1999, Californians — particularly on the politically vocal LA Westside — pushed back hard against the proposed overlay. The opposition was strong enough that the California State Assembly passed the Consumer Area Code Relief Act of 1999, which temporarily tabled the overlay.

The primary objection: mandatory 10-digit dialing for local calls. The 310 community had grown accustomed to 7-digit local dialing, and the prospect of adding the area code to every call — even within the same neighborhood — was seen as an unnecessary disruption.

The relief lasted only a few years. By 2006, number exhaustion could no longer be avoided, and the overlay was implemented as planned.

2006 to Present

Once area code 424 launched in 2006, the transition went smoothly. Existing 310 subscribers retained their numbers entirely. New subscribers entering the market received 424 numbers from the fresh pool. Both codes now coexist as fully equivalent local identifiers for the same geography.

The overlay model has proven effective: the 310/424 dual-code system has supported the region's continued growth in mobile users, IoT devices, VoIP services, and business line proliferation without requiring any further geographic splits.

424 Area Code Time Zone

This region operates entirely within the Pacific Time Zone (PT):

• Pacific Standard Time (PST): UTC−8 — observed from early November to mid-March
• Pacific Daylight Time (PDT): UTC−7 — observed from mid-March to early November

Calling Into the 424 Zone

From the East Coast (ET): Eastern Time is 3 hours ahead. A call at 9 AM PT reaches New York at noon ET — good for mid-morning cross-coast coordination.

From the Midwest (CT): Central Time is 2 hours ahead of Pacific. An 11 AM CT call hits the 424 zone at 9 AM PT — a solid morning-to-morning window.

From Mountain Time (MT): One hour ahead in most cases. Note that Arizona (excluding Navajo Nation) does not observe Daylight Saving Time, which creates a 2-hour gap during DST periods.

International calls to 424: From the UK, dial 00 + 1 + 424 + 7-digit number. From Australia, dial 0011 + 1 + 424 + 7-digit number. Globally, use +1-424-XXX-XXXX format on mobile.

Best calling window: 9 AM to 5 PM PT keeps both parties in standard business hours. For businesses managing inbound call flows, ensuring your IVR business hours are set to Pacific Time prevents after-hours calls from going unanswered or landing incorrectly.

Is a 424 Call a Scam?

The 424 prefix is legitimate — it serves real residents and businesses across LA's Westside and South Bay. However, its high name recognition and strong association with affluent communities make it a frequent target for caller ID spoofing, where scammers fake a local area code to increase the likelihood of an answer.

Several specific scam patterns have been reported targeting and impersonating 424 numbers.

Common 424-Spoofed Scams

Student loan forgiveness robocalls: This is one of the most reported scam patterns specifically targeting California residents. Robocalls claim the recipient's loan forgiveness status is changing and request personal information or payment to process relief. The Department of Education does not initiate contact this way.

Fake bank fraud alerts: Callers impersonating major Los Angeles-area banks — including Chase, Wells Fargo, and Bank of America — claim unauthorized transactions have occurred and ask recipients to verify account credentials or transfer funds to a safe account. Legitimate banks never ask customers to transfer money or share passwords over an unsolicited call.

Utility payment fraud: Callers impersonating LADWP (Los Angeles Department of Water and Power) or SoCalGas claim an account is overdue and that service will be cut off unless immediate payment is made via prepaid card or wire transfer.

Delivery phishing: Callers or texts spoofing 424 numbers claim to be UPS, FedEx, or USPS with a package delivery issue requiring personal verification.

Protecting Yourself and Your Business

• Legitimate government agencies, banks, and utilities do not demand immediate payment via gift card, cryptocurrency, or wire transfer over an unsolicited call.
• If a local number calls claiming urgency on any financial matter, hang up and call the organization directly using the official number on their website.
• Use a reverse phone lookup to check unfamiliar numbers before returning calls.
• Businesses operating legitimate 424 numbers benefit from using a STIR/SHAKEN-compliant VoIP provider — this authentication framework verifies caller ID data and significantly reduces spoofing effectiveness.

The 424 Economy: What Powers the Region

The 424 zone covers an extraordinary concentration of industries — understanding what drives the region helps businesses align their positioning for maximum relevance.

Entertainment and Streaming

The 424 territory is at the center of the global entertainment economy. Sony Pictures Studios in Culver City remains one of the most active production lots in the world. Apple TV+, Amazon Studios, and HBO have all established major presences in Culver City and West LA. Beverly Hills continues to house the management companies, talent agencies, and entertainment law firms that run the business side of Hollywood.

Silicon Beach Technology

Playa Vista is the densest node of Silicon Beach's tech ecosystem. Google's LA operations, Microsoft's Silicon Beach presence, and dozens of venture-backed startups are based there. Santa Monica's tech cluster adds to this density with digital agencies, ad tech companies, and creative-technology firms.

Aerospace and Defense

El Segundo and Hawthorne anchor one of the most significant aerospace corridors in the country. Lockheed Martin, Northrop Grumman, and Raytheon have major facilities in El Segundo. SpaceX's Hawthorne headquarters has become a landmark of commercial space industry growth.

Tourism, Hospitality, and Lifestyle

The 424 zone's coastline — Malibu, Santa Monica, Venice Beach, Manhattan Beach, Hermosa Beach, Redondo Beach — draws tens of millions of visitors annually. Beverly Hills's Rodeo Drive, the Santa Monica Pier, and West Hollywood's entertainment corridors are globally recognized tourism destinations.

Sports and Live Entertainment

Inglewood's SoFi Stadium complex has transformed the city into a major sports destination, hosting NFL games, major concerts, and international events. The adjacent Kia Forum continues to draw premier live entertainment acts.

Why a 424 Business Number Strengthens Your LA Presence

A 424 number delivers advantages that no toll-free or out-of-state number can replicate in the Los Angeles market.

Local Trust Before the Call Connects

Research consistently shows that consumers answer local area code calls at significantly higher rates than toll-free or unfamiliar numbers. A 424 number tells the recipient that the caller is part of the LA community — before a single word is exchanged. In a market as crowded and competitive as LA's Westside, that recognition is a practical advantage, not just a cosmetic one.

Prestige Through Geographic Association

Beverly Hills, Malibu, Santa Monica, and West Hollywood carry a global prestige that few other addresses in the world match. A 424 number associates your brand with that prestige automatically. For businesses in entertainment, luxury services, real estate, finance, and professional services, this association resonates with both local clients and international partners.

Local SEO Reinforcement

A consistent 424 number in your Google Business Profile, website footer, and local directory listings reinforces geographic relevance for LA Westside-specific searches. Google's local ranking factors weigh NAP (Name, Address, Phone) consistency — a 424 number aligned with Westside-targeting content directly strengthens visibility for "near me" and neighborhood-specific queries.

Remote Presence Without a Physical Office

You do not need a Beverly Hills address to project a Beverly Hills area code. Virtual phone number technology routes a 424 number to any device — mobile, softphone, desktop app — regardless of physical location. This lets remote teams, national businesses, and companies testing the LA market establish a credible local presence immediately, without lease commitments.

Campaign Attribution by Channel

Assigning unique 424 numbers to different marketing channels — local print, outdoor advertising, digital campaigns, landing pages — gives you clean per-channel call analytics for the LA market. This data tells you exactly which efforts drive inbound calls so you can reallocate budget toward the highest-performing channels.

How to Get a Local 424 Business Number

1. Choose a VoIP or virtual number provider Select a provider that maintains active 424 number inventory. Given the 310/424 dual-code structure, some providers may have limited 424 stock — confirm availability before committing.

2. Browse and select your number Most platforms let you search available 424 numbers and filter by digit pattern. Some offer vanity number options for branded memorability.

3. Configure call routing Set up how your 424 number handles incoming calls: forward to mobile, ring a team queue, connect to an IVR menu, or route through a softphone app. Most modern VoIP platforms handle this via a browser dashboard.

4. Enable SMS Activating two-way text messaging on your 424 number adds a parallel channel for appointment reminders, follow-ups, and customer support alongside voice.

5. Port an existing number if needed Local Number Portability (LNP) regulations allow you to transfer an existing 424 number to a new provider. Work with your new provider to manage the port and ensure there is no service interruption during transition.

What to Look for in a Provider

When choosing a provider for a local LA Westside number, evaluate:

• Uptime reliability — Rozper operates at 99.999% uptime, keeping your LA line active and available when clients and prospects call.
• Call quality — Tier-1 carrier connections and HD Voice codec support ensure clear, professional-grade audio.
• Feature depth — IVR, call forwarding, call recording, voicemail-to-email, analytics, and SMS should be standard, not add-ons.
• International reach — If your business extends beyond LA to global markets, a provider covering 150+ countries consolidates your communication stack on a single platform.
• Transparent pricing — No hidden fees or long-term contract penalties.

Rozper is one option worth considering here, maintaining 99.999% uptime and coverage in 150+ countries so a single platform can serve both your local LA Westside line and any international operations.

Common 424 Business Number Challenges and Solutions

What's Next for the 424 Region

Silicon Beach will keep scaling. The Playa Vista–Santa Monica–Venice tech corridor continues to attract venture investment and engineering talent, maintaining its position as one of the fastest-growing tech ecosystems in the US.

Inglewood's transformation is still unfolding. SoFi Stadium's opening was phase one. Commercial and mixed-use development in the surrounding area is continuing, and the long-term economic spillover for South Bay businesses is significant.

UCaaS is replacing legacy phone systems throughout the region. Entertainment production companies, streaming studios, and tech startups in the 424 zone are rapidly adopting cloud-based Unified Communications platforms that consolidate voice, video, messaging, and collaboration.

STIR/SHAKEN is reshaping caller trust. As the framework matures, verified calls will display differently from unverified ones across major carriers' spam filters. Businesses using compliant providers will benefit from improved answer rates as consumers increasingly rely on authentication signals.

Additional overlay capacity may be required. The California Public Utilities Commission and NANPA monitor number exhaustion across the 310/424 pool. If demand continues to outpace supply, a third overlay or other relief mechanism may be introduced in the coming years.

Conclusion

The 424 area code is California's answer to a geography that kept outgrowing its number supply — an overlay built to preserve the 310 identity that Westside LA had spent decades building. From its contested origins in the 1999 protest movement to its smooth 2006 launch, 424 now stands as a fully equivalent local identifier for one of the world's most commercially significant urban territories.

For businesses, a 424 number is one of the most efficient investments in LA market credibility available. It raises call answer rates, signals community presence, supports local SEO, and gives distributed teams the same Westside identity as businesses with a physical Beverly Hills or Santa Monica address.

The right technology partner turns that local number into a full-featured business communication platform — and the right area code makes sure the call gets answered in the first place. That entire 310/424 overlay structure still operates under rules set by the Federal Communications Commission's numbering administration, the same body that governs every area code split and overlay nationwide.