The 510 area code covers Oakland, Berkeley, Fremont and more in California. Provision a local 510 number in minutes.
Area code 510 covers the east side of San Francisco Bay, anchored by Oakland and Berkeley. Oakland is a major Pacific port city with a vibrant arts and food culture, while Berkeley is home to the flagship University of California campus. The area's diverse communities and proximity to Silicon Valley make it one of the most dynamic regions on the West Coast.
Across California, the 510 area code serves roughly 1.5 million residents in 4 communities — including Oakland, Berkeley, Fremont, among others. Numbers in the 510 zone keep Pacifictime, so a local line rings during your customers' business hours and shows a familiar CA caller ID on every outbound call.
510 was first introduced in 1991 under the North American Numbering Plan. It remains an active geographic code today.
Want a 510 number of your own? With Ajoxi you can claim one in minutes — no hardware, no contracts — and route calls, SMS, voicemail, and team messaging anywhere on a single UCaaS platform, with Tier-1 routing and clean caller-ID delivery on every line.
The 510 area code reaches 4 communities across California, from Oakland to Hayward. A customer in any of them sees a familiar local number when you call, which is the single biggest driver of answer rates — and with Ajoxi you can claim a number in any of these cities, or several at once, and route every call to the same team.
Pair a local Oakland presence with enterprise-grade UCaaS — calling, meetings, and messaging on one platform.
Get a 510 NumberA 510 number tells Oakland customers you're local — instant trust and higher answer rates, no office required.
Every 510 line includes HD calling, video meetings, team chat, SMS/MMS, auto-attendant, call recording, and an AI assistant.
Already have a 510 number? Port it in for free. Your number stays yours — port out anytime, no lock-in.
The 510 area code covers Oakland, Berkeley, Fremont, Hayward in California.
Phone numbers in the 510 area code operate on America/Los_Angeles time.
Yes. The 510 area code was introduced in 1991 and remains an active geographic code today.
Yes. Ajoxi provisions virtual 510 numbers with instant activation, clean caller-ID delivery, Tier-1 routing, and no setup fees — so you can build a local presence in minutes.
Choose a 510 number in the Ajoxi dashboard and it activates immediately — no hardware, no contracts, and no setup fees. Prefer to keep a number you already use? Port any existing 510 number in for free, usually within a few business days and with no downtime during the switch.
Yes. Every 510 number supports SMS and MMS alongside HD calling, so your team can text customers, run campaigns, and reply to conversations from the same line — all in the browser on any device, with no separate app to install.
Provision a 510 number with instant activation, clean caller-ID, and Tier-1 routing — no setup fees, live in minutes.