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Phone Numbers: (909) 312-XXXX
Recently Searched Numbers in the 909 Area Code
About the (909) 312 Prefix
The (909) 312 prefix serves San Bernardino, California, United States. Phone numbers in this exchange follow the format (909) 312-XXXX. The primary carrier assigned to this prefix is T-Mobile.
(909) 312 Geographic Info
- Primary City
- San Bernardino
- State
- California, United States
- Primary Carrier
- T-Mobile
Other Prefixes in the 909 Area Code
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Read more: How to Stop Spam Calls on iPhone and Android (2026 Guide) →Frequently Asked Questions
What area code is (909) 312?
(909) 312 is a telephone prefix in the 909 area code, which serves San Bernardino, California, United States.
Where is the (909) 312 prefix located?
Phone numbers with the (909) 312 prefix are located in San Bernardino, California, United States. The primary carrier for this prefix is T-Mobile.
What carrier uses the (909) 312 prefix?
The primary carrier assigned to the (909) 312 prefix is T-Mobile. However, numbers may be ported to other carriers over time.
How do I look up a phone number with the (909) 312 prefix?
Enter the full 10-digit number (e.g. (909) 312-XXXX) into ClarityCheck's reverse phone lookup to instantly see the owner's name, address, social profiles, and more.