Area Code 650
Area code 650 covers Palo Alto and nearby cities including Daly City, San Mateo, Redwood City in California, in the Pacific Time.
Area code 650 quick facts
| Location | Palo Alto, California |
|---|---|
| Time zone | Pacific Time |
| In service | 1997-08-02 |
| Nearby codes | 341, 510, 408, 669, 415, 628 |
| Carrier coverage | 711 prefixes; 29% wireless |
| FTC complaint data | 558 complaints across 66 numbers |
| Data current as of | August 2, 2026 |
Is a call from 650 a scam? Who called me from 650?
FTC complaints involving 650 numbers
Numbers shown with area code 650 in the FTC's Do Not Call “Reported Calls” database (recent reporting window). Most common reported reasons: “Other”, “Calls pretending to be government, businesses, or family and friends”, “Reducing your debt (credit cards, mortgage, student loans)”.
Most-complained 650 numbers:
- (650) 203-0000 — 173 complaints
- (650) 265-6786 — 23 complaints
- (650) 215-5272 — 23 complaints
- (650) 253-0000 — 19 complaints
- (650) 204-1111 — 19 complaints
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 650
Palo Alto, Daly City, San Mateo, Redwood City, Mountain View, South San Francisco, San Bruno, Pacifica, Belmont, Burlingame, East Palo Alto, Foster City
Area codes by city
- Palo Alto area codes
- San Mateo area codes
- Mountain View area codes
- Redwood City area codes
- Daly City area codes
Carriers in area code 650
Area code 650 spans 711 prefixes, about 29% wireless. Top carriers: PACIFIC BELL, ONVOY, LLC - CA, T-MOBILE USA, INC., NEW CINGULAR WIRELESS PCS, LLC. Look up the carrier and line type for a 650 number.
Other California area codes
- 209 — Stockton
- 213 — Los Angeles
- 279 — Sacramento
- 310 — Compton
- 323 — Los Angeles
- 341 — Oakland
- 350 — Stockton
- 357 — Fresno
- 369 — Santa Rosa
- 408 — San Jose
- 415 — San Francisco
- 424 — Compton
- 442 — Victorville
- 510 — Oakland
- 530 — Marysville
- 559 — Fresno
- 562 — Long Beach
- 619 — San Diego
- 626 — Alhambra
- 628 — San Francisco
- 657 — Anaheim
- 661 — Bakersfield
- 669 — San Jose
- 707 — Santa Rosa
- 714 — Anaheim
- 738 — Los Angeles
- 747 — San Fernando
- 760 — Oceanside
- 805 — Oxnard
- 818 — Van Nuys
- 820 — Camarillo
- 831 — Salinas
- 837 — Redding
- 840 — Pomona
- 858 — San Diego
- 909 — Ontario
- 916 — Sacramento
- 925 — Concord
- 949 — Irvine
- 951 — Riverside
Nearby area codes
Frequently asked questions
Where is area code 650?
Area code 650 covers Palo Alto and nearby cities including Daly City, San Mateo, Redwood City in California, in the Pacific Time.
What cities use area code 650?
Area code 650 serves Palo Alto, Daly City, San Mateo, Redwood City, Mountain View, and 11 other communities in California.
What time zone is area code 650 in?
Area code 650 is in the Pacific Time (America/Los_Angeles).
How do you dial a 650 number?
Dial all 10 digits: 650 followed by the 7-digit local number. From abroad, dial +1 650 and the local number.
Is a call from area code 650 a scam?
A 650 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 650 a country code?
No. 650 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 650 number written for international dialing looks like +1 650 followed by the 7-digit local number.
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of August 2, 2026. Refreshed monthly.