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Phone Numbers: (712) 237-XXXX
Recently Searched Numbers in the 712 Area Code
About the (712) 237 Prefix
The (712) 237 prefix serves Sioux City, Iowa, United States. Phone numbers in this exchange follow the format (712) 237-XXXX. The primary carrier assigned to this prefix is NORTHWEST IOWA TEL.
(712) 237 Geographic Info
- Primary City
- Sioux City
- State
- Iowa, United States
- Primary Carrier
- NORTHWEST IOWA TEL
Other Prefixes in the 712 Area Code
Millions of calls go unanswered every day because people don't know who's on the other end. This might change how you handle the next one:
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 (712) 237?
(712) 237 is a telephone prefix in the 712 area code, which serves Sioux City, Iowa, United States.
Where is the (712) 237 prefix located?
Phone numbers with the (712) 237 prefix are located in Sioux City, Iowa, United States. The primary carrier for this prefix is NORTHWEST IOWA TEL.
What carrier uses the (712) 237 prefix?
The primary carrier assigned to the (712) 237 prefix is NORTHWEST IOWA TEL. However, numbers may be ported to other carriers over time.
How do I look up a phone number with the (712) 237 prefix?
Enter the full 10-digit number (e.g. (712) 237-XXXX) into ClarityCheck's reverse phone lookup to instantly see the owner's name, address, social profiles, and more.