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Phone Numbers: (623) 288-XXXX
Recently Searched Numbers in the 623 Area Code
About the (623) 288 Prefix
The (623) 288 prefix serves Glendale, Arizona, United States. Phone numbers in this exchange follow the format (623) 288-XXXX. The primary carrier assigned to this prefix is ONVOY.
(623) 288 Geographic Info
- Primary City
- Glendale
- State
- Arizona, United States
- Primary Carrier
- ONVOY
Other Prefixes in the 623 Area Code
If you've ever stared at an unknown number and wondered whether to pick up, this is for you:
Apple's Silence Unknown Callers feature (Settings → Phone → Silence Unknown Callers) sends any call from a number not in your Contacts, Recents, or Siri Suggestions directly to voicemail without ringing your phone. The call still appears in your Recents list, and the caller can leave a voicemail.
Read more: How to Stop Spam Calls on iPhone and Android (2026 Guide) →Frequently Asked Questions
What area code is (623) 288?
(623) 288 is a telephone prefix in the 623 area code, which serves Glendale, Arizona, United States.
Where is the (623) 288 prefix located?
Phone numbers with the (623) 288 prefix are located in Glendale, Arizona, United States. The primary carrier for this prefix is ONVOY.
What carrier uses the (623) 288 prefix?
The primary carrier assigned to the (623) 288 prefix is ONVOY. However, numbers may be ported to other carriers over time.
How do I look up a phone number with the (623) 288 prefix?
Enter the full 10-digit number (e.g. (623) 288-XXXX) into ClarityCheck's reverse phone lookup to instantly see the owner's name, address, social profiles, and more.