310 Area Code Number: Location, Dialing, Time Zone & Uses

Introduction

The 310 area code is one of the most recognised prefixes in the United States. It serves Westside Los Angeles, the South Bay, and the Beach Cities, with a small extension into Ventura County and offshore coverage of Santa Catalina Island. For residents it is a badge of regional identity; for businesses it signals an address inside one of the world's largest urban economies.

Introduced on November 2, 1991, when it was carved out of the original 213 area code, the prefix has been in high demand ever since. This guide covers exactly where it works, what time zone it follows, how to dial it from anywhere, and how a business can secure a local Los Angeles number before inventory tightens further.

What is the 310 Area Code Number?

Area code 310 is a North American Numbering Plan (NANP) prefix serving the western and coastal portions of Los Angeles County. It exists because demand for phone numbers in Los Angeles outgrew the original 213 territory decades ago — and demand has never slowed. In 1997, continued growth pushed the southeast portion of its territory into the new 562 code, and persistent number exhaustion later led the California Public Utilities Commission to approve 424, the state's first overlay, in 2006.

Since the overlay took effect, every local call must be dialled with all ten digits, and new applicants are often assigned 424 numbers because 310 inventory is nearly exhausted. An original 310 number today quietly signals a business that was established before 2006 — which only adds to its scarcity value.

Why the 310 Area Code is Important

Few prefixes carry comparable cachet. The code is associated with affluent neighbourhoods, the entertainment industry, and established businesses, so a 310 number functions almost like a piece of digital real estate. Companies use it to signal permanence and local roots in the LA market, and that prestige translates into practical value — higher answer rates and stronger first impressions with Los Angeles customers.

Geographic Coverage: Where is the 310 Phone Area Code Used?

The coverage map spans roughly 36 cities and 89 ZIP codes, concentrated in western Los Angeles County with a small extension into Ventura County and offshore to Santa Catalina Island.

Primary Cities and Communities

On the Westside, the prefix covers Beverly Hills, Santa Monica, Westwood, Brentwood, Pacific Palisades, Venice, Culver City, and Century City — areas known for high-end retail, entertainment, and UCLA. The South Bay belongs to it as well: Torrance, Redondo Beach, El Segundo, Gardena, and Hawthorne. The Beach Cities — Malibu, Manhattan Beach, and Hermosa Beach — round out the coastal stretch with some of the most recognisable shoreline in California.

Major Cities and Regions in the 310 Area Code

Beyond the coast, the territory includes Inglewood — home of SoFi Stadium and the Intuit Dome — plus Compton, Carson, and Marina del Rey. The region hosts aerospace employers in El Segundo and tech campuses in Playa Vista's "Silicon Beach". Local businesses across these communities benefit from the prefix's reputation, and demand from real estate, entertainment, and professional services keeps remaining inventory scarce.

Time Zone and Best Calling Hours for the Area Code 310

Anyone calling Los Angeles from another region should check the clock first — a small courtesy that matters a great deal for business calls.

What Time Zone Does the 310 Phone Area Code Follow?

The region observes Pacific Time (PT): Pacific Standard Time (PST, UTC-8) in winter and Pacific Daylight Time (PDT, UTC-7) from March to November under Daylight Saving Time. Los Angeles runs three hours behind New York and eight hours behind London, so the offset is worth double-checking before dialling.

Best Time to Call a 310 Area Phone Number

For business calls, 9:00 a.m. to 6:00 p.m. PT is the standard window. Callers on the East Coast should remember that 9:00 a.m. in New York is 6:00 a.m. in Los Angeles. Personal calls allow more flexibility, but early mornings and late evenings are best avoided.

Dialing Guide: How to Call a 310 Area Phone Number

Local Dialing Format

Because of the 424 overlay, ten-digit dialling is mandatory for every local call — the prefix plus the seven-digit number (for example, 310-555-1234). Seven-digit dialling has not worked in this region since 2006, so including the code is not optional.

International Dialing Format

From abroad, dial the international exit code (00 in much of Europe, 011 from NANP countries), then the U.S. country code +1, then the full ten-digit number — +1-310-555-1234. Missing any part of the sequence leads to a failed connection.

Benefits of Having a 310 Area Code Number

Choosing this area code offers businesses prestige, better customer connections, and flexibility in communication tools — a strong brand presence both locally and nationwide.

Strong Business Credibility & Prestige

The prefix is shorthand for established West LA business. Customers seeing it on caller ID associate the call with a credible local company rather than an anonymous out-of-state operation — a perception advantage competitors with generic numbers do not get.

Increased Local & Nationwide Customer Engagement

Local numbers get answered. Customers in Santa Monica or Beverly Hills are measurably more likely to pick up a call from a familiar area code than from an unknown region, and the recognition extends nationally thanks to the prefix's pop-culture footprint.

Flexibility with VoIP and Virtual Phone Systems

A virtual LA number does not require an LA office. Cloud phone systems let teams anywhere answer on a local identity, route calls across time zones, and support remote work — full local presence without local overhead.

Easy Number Portability & Scalability

Numbers in this region are fully portable between providers, so a business can upgrade services or switch platforms without losing the identity customers already know. Adding lines or expanding into new markets requires no renumbering.

Ideal for Marketing & Brand Identity

A recognisable local prefix strengthens ads, signage, and landing pages aimed at the LA market. Alignment between the phone number and the target geography measurably improves response rates on local campaigns.

How to Get a 310 Area Phone Number

Securing a local Los Angeles number comes down to understanding the registration process and choosing the right provider for the way the number will be used.

Steps to Register a 310 Number for Business or Personal Use

• Check availability — inventory is scarce, and many carriers offer 424 instead. Specialist VoIP providers still hold 310 stock.
• Choose your purpose — business users typically need VoIP features for scalability; personal users may prefer a mobile or landline setup.
• Select a provider — compare carriers and VoIP platforms on price, features, and number availability.
• Register and activate — submit business or identity details and activate the number, often the same day.
• Configure features — set up call forwarding, a virtual receptionist, or CRM integrations before going live.

Where to Buy a 310 Area Code Number

One caution: the prefix's prestige also attracts neighbour-spoofing scams, so unexpected calls requesting payment or personal data should always be verified through official channels.

Why Choose Acepeak for Your 310 Area Code Number?

The platform provides budget-friendly VoIP and virtual number services for startups through large enterprises. Numbers come packed with call forwarding, interactive voice response (IVR), SIP trunking, SMS, and cloud PBX integration — modern communication tools without extra hassle.

Switching is stress-free too: porting an existing number is handled end-to-end, and a 24/7 support team keeps lines running at all hours — with carrier-grade caller ID authentication that helps keep spoofed calls out.

Conclusion

The 310 prefix remains one of America's most recognisable dialling codes — a marker of Westside Los Angeles identity, scarce since the 424 overlay, and valuable to any business courting LA customers. Its mix of prestige, coverage, and portability makes it a strategic asset rather than just a phone number.

For companies planning a Southern California presence, securing a local number now — before inventory tightens further — is the practical next step.