- City / exchange
- Sioux City
- Province / state
- Iowa
- Country
- United States
- Carrier
- Onvoy, LLC - Ia
- Line type
- Likely VoIP / virtual number
- OCN
- 221F
- Status
- In Service
- Assigned
- 07/28/2026
- Number pooling
- Yes (block shared between carriers)
712-491 phone numbers
Sioux City, Iowa, United States · Onvoy, LLC - Ia
Reported numbers in 712-491
No numbers in this block have been reported by visitors yet.
What does the 712-491 prefix tell you?
Every North American number is area code + prefix + line. The prefix 712-491 was assigned to Onvoy, LLC - Ia on 07/28/2026 for the Sioux City exchange. A call from this block usually originates from a Onvoy, LLC - Ia customer in or near Sioux City, but caller ID can be spoofed to show any number.
Other Sioux City prefixes in 712
712-202712-203712-204712-212712-222712-223712-224712-226712-233712-234712-238712-239712-244712-245712-251712-252712-253712-255712-258712-259712-266712-274712-276712-277712-279712-281712-293712-294712-301712-317712-333712-389712-413712-418712-444712-454712-490712-493712-499712-502712-503712-509712-510712-522712-535712-560712-564712-569712-570712-574712-577712-587712-613712-635712-639712-666712-670712-685712-710712-717