(408) Area Code Business Phone Numbers
The 408 area code has been the calling card of Silicon Valley since 1959, covering San Jose and the tech corridor that runs from Milpitas down to Gilroy. If your business talks to customers in the South Bay, a 408 number tells them you're actually here.
Get a 408 NumberAbout the 408 Area Code
When 408 split off from 415 back in 1959, San Jose was still mostly orchards and canneries. Today it anchors Silicon Valley and covers a corridor that stretches south to Gilroy and north to Milpitas, with Santa Clara County alone home to roughly 6,500 high-tech companies[1]. That legacy is why the 408 prefix carries weight the way a 212 does in Manhattan.
San Jose runs on small business more than the headlines suggest. The city is home to about 60,000 small businesses, and 98% of local companies have fewer than 35 employees[2]. Whether you're a Willow Glen dentist or a two-person startup in Japantown, a 408 number puts you inside that community instead of looking like an outsider dialing in.
Local numbers still matter here for a simple reason. South Bay customers screen calls hard, and a familiar 408 prefix gets answered while an unknown 800 number goes straight to voicemail. Tonet gives you a real 408 line you can forward, ring on your cell, or route through an auto attendant without swapping carriers every time you grow.
Cities Served by the 408 Area Code
The 408 covers most of Santa Clara County and stretches south into rural Santa Clara Valley. Coverage includes San Jose proper plus surrounding cities, with some overlap with the 669 overlay added in 2012.
Phone Features Built for South Bay Businesses
Silicon Valley moves fast, and the tools you use to answer the phone should keep up. Here's what comes standard with every 408 number.
Auto Attendant
Route callers to sales, support, or the right engineer without hiring a receptionist. Set different menus for business hours and after hours.
Call Recording
Save every customer conversation for training, quality checks, or that one deal where you need to remember what was actually promised.
AI Transcription
Voicemails and recorded calls come back as searchable text, so you can skim what happened while a client was on hold instead of replaying audio.
Business SMS
Text customers from your 408 number on the same line they call. Appointment reminders and quick confirmations without giving out your cell.
Mobile App
Take business calls on your phone whether you're at a coffee shop off Santana Row or working from home in Willow Glen.
Daily Billing
Plans start at $10 per user per month, billed daily. No annual contracts, no surprise renewal charges, add or remove seats whenever you need to.
Frequently Asked Questions
Can I get a 408 number if my business isn't in San Jose?
Yes. You don't need a physical address in the South Bay to claim a 408 number. Plenty of remote businesses and out-of-state companies use one to serve Silicon Valley clients.
What's the difference between 408 and 669?
669 is the overlay added in 2012 to keep up with demand after 408 ran out of new numbers. Both cover the same geography, but 408 is still the recognizable one locals associate with San Jose.
Can I port my existing 408 number to Tonet?
Yes. If you already have a 408 number with another provider, we can port it over at no extra cost. Most ports finish in a week or two with no downtime.
How much does a 408 business number cost?
Plans start at $10 per user per month, billed daily. Additional numbers run $2.50 per month each. No contracts, cancel whenever.
Does the 408 line work on my cell phone?
Yes. The Tonet mobile app rings your 408 line on your smartphone, so you can take business calls anywhere without giving out your personal number.
Ready to sound local in the 408?
Get a San Jose business number set up in minutes, no contracts required.
Get Started