Industries

Usecases

Resources

Partners

Book a 15-min call

Area Codes

Silicon Valley

Area Code `408`: San Jose, CA Local Numbers

Area code 408 is the telephone area code for San Jose and the heart of Silicon Valley, including Santa Clara, Sunnyvale, and Cupertino. Established in 1959 when 415 was split, 408 has become the most recognized area code in global tech — home to Apple, Cisco, Intel, eBay, and most of the Valley's hardware and software giants.

Set Up AI Calling for 408 — 2 Min

See how AI calling works →

1,118+ San Jose businesses already use Brilo

408 Quick Facts

Live data

📍

Region

Silicon Valley, CA

🕐

Time Zone

Pacific (PT)

🗺️

Major Cities

San Jose, Santa Clara, Sunnyvale

📞

Overlay For

Area Code 669

✅

Numbers Available

19 numbers available

Area Codes

Silicon Valley

Area Code `408`: San Jose, CA Local Numbers

Set Up AI Calling for 408 — 2 Min

See how AI calling works →

1,118+ San Jose businesses already use Brilo

408 Quick Facts

Live data

📍

Region

Silicon Valley, CA

🕐

Time Zone

Pacific (PT)

🗺️

Major Cities

San Jose, Santa Clara, Sunnyvale

📞

Overlay For

Area Code 669

✅

Numbers Available

19 numbers available

Area Code

Feature Answer

What is Area Code 408?

Area code 408 is a North American telephone area code assigned to the heart of Silicon Valley in California. Created in 1959 when 415 was split to handle Bay Area growth, 408 has become the most recognized tech-industry area code in the country. It serves San Jose, Santa Clara, Sunnyvale, Cupertino, Los Gatos, Saratoga, Campbell, Milpitas, and Gilroy, and is a local (non-toll-free) area code in the Pacific Time Zone.

When 415 was split in 1959, 408 was carved out to cover the South Bay and Central Coast. The 1998 split into 831 (Monterey/Santa Cruz) reduced 408 to just Silicon Valley. Through the 1980s and '90s, the code became globally recognized as Silicon Valley's identity — Apple, Cisco, Intel, eBay, Adobe, and most of the Valley's foundational companies hold 408 numbers. Overlay 669 was added in 2012 when 408 numbers ran low. Despite the overlay, 408 remains the gold standard for Silicon Valley tech companies.

📍

Silicon Valley, CA

⏰

Pacific (PT)

✅

19 numbers available

📅

Est. 1959

Area Code

Coverage Data

Cities & Zip Codes in Area Code 408

All cities and communities served by the 408 area code across Silicon Valley.

Set Up AI Calling for 408 — 2 Min

408 Area Code City Coverage

1,118+

City

County

Zip Codes

Est. Businesses

Cupertino

Santa Clara

95014

~3,200

Set up 408 AI calling →

Milpitas

Santa Clara

95035

~2,800

Set up 408 AI calling →

Mountain View

Santa Clara

94035 – 94043

~5,800

Set up 408 AI calling →

San Jose

Santa Clara

95101 – 95196

~32,000

Set up 408 AI calling →

Santa Clara

95050 – 95054

~5,400

Set up 408 AI calling →

Sunnyvale

Santa Clara

94085 – 94089

~6,800

Set up 408 AI calling →

Area Code

Spam Inteligence

Is Area Code 408 Spam?

We aggregate spam reports from thousands of sources. Here's what the data shows for 408 this month.

408 Spam Activity Score — Last 30 Days

Low

27% of reported US area codes have higher spam activity

📊 Total reports this month

📞 Top reported prefixes

408-262, 408-771

📈 Trend vs last month

↓ 8% lower

🏆 Trust ranking

Top 27% of US area codes

ANSWER RATES, EXPLAINED

Why aren't 408 numbers enough on their own?

Spam filters don't distinguish between scam calls and unknown legitimate ones. Silicon Valley customers pick up a verified 408 line 3.6x more often than an unverified one because the caller ID looks like a real business, not a number nobody recognizes.

Verified 408 = 3.6x more pickups

Brilo's 408 lines ship with verified caller ID built in, AI agents who answer naturally, and live transcripts of every call. Spam filters don't get a vote.

Set Up AI Calling for 408 — 2 Min

Area Code

Why Go local

Why Silicon Valley Businesses Choose a 408 Number

Across Silicon Valley, 1,118+ companies route their phone presence through Brilo on a 408 line — AI agents on the area code that's been answering for the Valley since the chip era started.

Set Up AI Calling for 408 — 2 Min

Local vs Other Number Types

📍 Local Number

82% answer rate

📞 Toll-Free 800 Number

32% answer rate

📱 Out-of-State Number

19% answer rate

❓ Unknown / VoIP

9% answer rate

📍

Local Trust Signal

Silicon Valley customers pick up a 408 call 4.0x more often than one from out-of-state. The Valley's original code still signals 'I'm in your zip code, not Sacramento' — and locals act on it.

🤖

AI-Powered Calls

Brilo runs your 408 line with AI agents 24/7 — natural conversation inbound and outbound, live transcripts straight to your CRM. Built for Valley teams that automate everything else, finally.

⚡

Setup in 2 Minutes

Claim a 408 number, configure your agent, and ship in two minutes. Salesforce, HubSpot, and 6,000+ integrations — exactly how Valley teams expect deployments to feel.

Brilo 2.0

Area Code 408 Questions

What Silicon Valley teams ask before launching AI calling on a 408 line.

Book a 15-min call

Who uses area code 408?

Is 408 a toll-free number?

Can I get a 408 number if my business isn't in California?

What area code is 408 from?

Is a 408 number associated with spam?

How do I set up a 408 number with AI calling?

What is the difference between 408 and 669?

Do I need to dial the area code for local calls within 408?

Never Miss a Customer Call Again. Let AI Close the Loop—24/7.

Join 1,000+ businesses using Brilo to answer, qualify, and convert calls with AI—instantly.

Book a 15-min call

Join Discord

Connect with our community, ask questions, and stay updated on product news.

Book a Call

Schedule a quick call with our team to explore solutions for your needs.

Join Discord

Connect with our community, ask questions, and stay updated on product news.

Book a Call

Schedule a quick call with our team to explore solutions for your needs.

Join Discord

Connect with our community, ask questions, and stay updated on product news.

Book a Call

Schedule a quick call with our team to explore solutions for your needs.

Join Discord

Connect with our community, ask questions, and stay updated on product news.

Book a Call

Schedule a quick call with our team to explore solutions for your needs.

Area Code 408: San Jose, CA Local Numbers

Area Code 408: San Jose, CA Local Numbers

Never Miss a Customer Call Again. Let AI Close the Loop—24/7.

Never Miss a Customer Call Again. Let AI Close the Loop—24/7.

Never Miss a Customer Call Again. Let AI Close the Loop—24/7.

Never Miss a Customer Call Again. Let AI Close the Loop—24/7.

Area Code `408`: San Jose, CA Local Numbers

Area Code `408`: San Jose, CA Local Numbers