Area Code Box

Area code 712

Where is area code 712?

Sioux City, Council Bluffs and Sergeant Bluff, Iowa

Local time: … (Central Time)

StateIowa
CountryUnited States
Main citiesSioux City, Council Bluffs and Sergeant Bluff
Time zoneCentral Time
Overlay area codesNone
In service since1947
Assigned prefixes633
Dialing format(712) XXX-XXXX · +1 712 XXX XXXX from abroad

Look up a 712 number

Enter a 3-digit area code or a full 10-digit number.

Cities and towns in area code 712

Listed by how many phone prefixes (the 3 digits after the area code) are assigned to each place in 712.

Phone companies in area code 712

The carriers that hold the most 712 prefixes. People can move their number to another carrier, so this shows who first issued a number, not who serves it today.

PrefixesCarrier
80Windstream Iowa Communications
68Verizon Wireless
64Qwest (Lumen)
43New Cingular Wireless PCS (AT&T)
31Onvoy
24Frontier Communications of Iowa
20United States Cellular (UScellular)
17T-Mobile USA

All 633 prefixes in area code 712

Pick the 3 digits after the area code to see that prefix’s city and carrier.

Questions

Where is area code 712?
Area code 712 is in Iowa. It serves Sioux City, Council Bluffs, Sergeant Bluff, Spencer and Le Mars and 239 other cities and towns.
What time zone is area code 712 in?
Area code 712 uses Central Time.
Is a call from area code 712 a scam?
The area code alone doesn’t tell you. Most calls from 712 are ordinary local calls, but scammers can fake (“spoof”) any number. If you don’t recognize a 712 number, let it go to voicemail.
When did area code 712 start?
712 went into service in 1947.
Can a 712 number be outside Iowa?
Yes. People keep their numbers when they move and when they switch to mobile or internet phone services, so a 712 caller can be anywhere.

Other area codes in Iowa

Area codeMain cities
319Cedar Rapids, Iowa City and Waterloo
515Des Moines, Ames and Winterset
563Davenport, Dubuque and Muscatine
641Mason City, New Haven and Marshalltown