408
San Jose
Pacific Time
Equip your phone number with Retell’s AI receptionist—trained to answer FAQs, book appointments, qualify leads, and route calls in real time. Local number, enterprise-grade service.

Core of Silicon Valley: tech companies, R&D, engineering, and venture capital.
San Jose metro and adjacent tech corridors.
Includes San Jose, Santa Clara, Sunnyvale, and surrounding areas. Retell's California answering service can answer calls to 408 numbers at any hour.
408 original; 669 overlay started in 2012. 10-digit dialing enforced.
San Jose anchors Silicon Valley — and was California’s first state capital.