650 area code
Where the 650 area code is, its overlay and how to dial a +1 650 number from anywhere.
The 650 area code is in Belmont, California, United States (Pacific (PT)). To call from abroad: +1 650 555-0123.
The 650 area code is a geographic North American Numbering Plan (NANP) code covering Belmont, California. It has been in service since 22-Nov-1996 and sits in the Pacific (PT) time zone.
How to dial a 650 number
+1 650 555-01231 650 555-0123650 555-0123Cities in the 650 area code
A 650 number is usually in one of these places in California — 2 counties.
Other California area codes
Frequently asked questions
Where is the 650 area code?
The 650 area code is in Belmont, California, United States (Pacific (PT)).
Do I have to dial 10 digits for 650?
Yes — dial the area code plus the seven-digit number.
How do I call a 650 number from another country?
Dial your exit code (or +), then 1, then 650, then the number: +1 650 555-0123.
Source: NANPA numbering plan. An area code covers a region, not a precise address — a 650 number does not pinpoint a street or ZIP code.
Number holders in area code 650
Each prefix (the three digits after the area code) is assigned by NANPA to one telephone company. 730 prefixes are in use in 650, shared by 39 companies. The largest holders:
| Company | Prefixes | Share |
|---|---|---|
| Pacific Bell | 273 | 37% |
| New Cingular Wireless PCS, LLC | 59 | 8% |
| T-Mobile USA, Inc. | 57 | 8% |
| Onvoy, LLC | 45 | 6% |
| Level 3 Communications, LLC | 42 | 6% |
| Mcimetro Access Transmission Services LLC | 42 | 6% |
Source: NANPA central office code assignments. A number keeps its original prefix when it is ported to another carrier.
Complaints about 650 numbers
- Reports to the FTC, last 30 days
- 468
- Recorded messages or robocalls
- 54%
- Rank among area codes
- #220 of 670
- Most reported subjects
- Other (170)
- Calls pretending to be government, businesses, or family and friends (102)
- Reducing your debt (credit cards, mortgage, student loans) (64)
Period Aug 26 – Sep 24, 2026. These are the numbers shown on the caller ID of the reported calls; many are spoofed and do not belong to the real caller.
Source: US Federal Trade Commission, Do Not Call reported calls data (daily files).
All US area codes United States +1 Map of area code 650 — cities & rate centres