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Phone Numbers: (925) 634-XXXX
Recently Searched Numbers in the 925 Area Code
About the (925) 634 Prefix
The (925) 634 prefix serves Concord, California, United States. Phone numbers in this exchange follow the format (925) 634-XXXX. The primary carrier assigned to this prefix is PACIFIC BELL.
(925) 634 Geographic Info
- Primary City
- Concord
- State
- California, United States
- Primary Carrier
- PACIFIC BELL
Other Prefixes in the 925 Area Code
The way we use phones has changed — but so have the risks. Here's something our research team thinks you should know:
Political campaigns, charities, surveys, and companies you have an existing business relationship with are exempt from the Do Not Call List. Think of it as a filter for legal-but-annoying calls, not a defense against fraud.
Read more: How to Stop Spam Calls on iPhone and Android (2026 Guide) →Frequently Asked Questions
What area code is (925) 634?
(925) 634 is a telephone prefix in the 925 area code, which serves Concord, California, United States.
Where is the (925) 634 prefix located?
Phone numbers with the (925) 634 prefix are located in Concord, California, United States. The primary carrier for this prefix is PACIFIC BELL.
What carrier uses the (925) 634 prefix?
The primary carrier assigned to the (925) 634 prefix is PACIFIC BELL. However, numbers may be ported to other carriers over time.
How do I look up a phone number with the (925) 634 prefix?
Enter the full 10-digit number (e.g. (925) 634-XXXX) into ClarityCheck's reverse phone lookup to instantly see the owner's name, address, social profiles, and more.