Numbers with prefix 650 in United States
650 is a landline prefix for California.
The NoCall community has flagged 220 numbers with the 650 prefix: see which ones are spam or telemarketing.
This page shows information about numbers beginning with 650 in United States. If you received a call from an unknown number with this prefix, search the full number in our database to read community reports and comments. Landline California. Cost: Normal.
Search a number with prefix 650
Search a phone number or a company name (Bank of America, Verizon and AT&T...) to check if it has been reported as spam.
No numbers reported with prefix 650
We do not have public reports for this prefix yet. Try searching a full number or submit a report if you just received a suspicious call.
About numbers 650
Landline California. Cost: Normal. A prefix describes an allocation. Portability and caller-ID spoofing mean it cannot identify the caller on its own.
Source and review
Google libphonenumber (compiled from national numbering plans) · Document: 2026-08-28 · Reviewed: 2026-08-31
A prefix describes an allocation. Portability and caller-ID spoofing mean it cannot identify the caller on its own.