Area Code 408

Area code 408 covers San Jose, California (Pacific Time) and nearby Sunnyvale, Santa Clara and Milpitas; overlay 669 shares the same area.

Area code 408 quick facts

LocationSan Jose, California
Time zonePacific Time
In service1959-01-01
Overlay codes669
Nearby codes669, 341, 510, 650, 831, 925
Carrier coverage787 prefixes; 32% wireless
FTC complaint data267 complaints across 62 numbers
Data current as ofNovember 2, 2026

Is a call from 408 a scam? Who called me from 408?

FTC complaints involving 408 numbers

62numbers reported
267FTC complaints

Numbers shown with area code 408 in the FTC's Do Not Call “Reported Calls” database (recent reporting window). Most common reported reasons: “Other”, “No Subject Provided”, “Calls pretending to be government, businesses, or family and friends”.

Most-complained 408 numbers:

These are FTC Do Not Call complaints filed about specific numbers shown with this area code — frequently spoofed. The area code itself is not a scam. See the most-reported area codes and the most-reported phone numbers nationwide.

Cities in area code 408

San Jose, Sunnyvale, Santa Clara, Milpitas, Gilroy, Morgan Hill, Campbell, Los Gatos, Saratoga

Area codes by city

Carriers in area code 408

Area code 408 spans 787 prefixes, about 32% wireless. Top carriers: PACIFIC BELL, T-MOBILE USA, INC., BANDWIDTH.COM CLEC, LLC - CA, CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA. Look up the carrier and line type for a 408 number.

Other California area codes

Nearby area codes

Frequently asked questions

Where is area code 408?

Area code 408 covers San Jose, California (Pacific Time) and nearby Sunnyvale, Santa Clara and Milpitas; overlay 669 shares the same area.

What cities use area code 408?

Area code 408 serves San Jose, Sunnyvale, Santa Clara, Milpitas, Gilroy, and 4 other communities in California.

What time zone is area code 408 in?

Area code 408 is in the Pacific Time (America/Los_Angeles).

How do you dial a 408 number?

Dial all 10 digits: 408 followed by the 7-digit local number. From abroad, dial +1 408 and the local number.

Is a call from area code 408 a scam?

A 408 number is geographically tied to California, but caller ID can be spoofed, so the displayed area code does not prove where a caller really is. If you did not expect the call, do not share personal information and consider looking the number up.

Is 408 a country code?

No. 408 is a US area code (a domestic 3-digit code), not a country code. The country (calling) code for the United States is +1, shared across the North American Numbering Plan. So a full 408 number written for international dialing looks like +1 408 followed by the 7-digit local number.

Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of November 2, 2026. Refreshed monthly.