Phone numbers in Carroll, Iowa
Carroll has 9 phone prefixes in area code 712.
Biggest holders: Verizon Wireless, CenturyLink / Lumen, Mcc Telephony. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 22%
- Local phone company 22%
- Internet / business phone carrier 33%
- Phone company 22%
Every prefix in Carroll
Search the first six digits of a number in this list. If it's here, the number started in Carroll with the carrier shown. If it isn't, check the Iowa page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 712-220 | Mcc Telephony | Internet / business phone carrier | 2010 |
| 712-292 | Verizon Wireless | Mobile carrier | – |
| 712-513 | Hd Carrier | Internet / business phone carrier | 2019 |
| 712-634 | Bandwidth | Internet / business phone carrier | 2018 |
| 712-771 | Edgetel | Phone company | 2020 |
| 712-775 | Btc | Phone company | 2003 |
| 712-790 | Verizon Wireless | Mobile carrier | – |
| 712-792 | CenturyLink / Lumen | Local phone company | – |
| 712-794 | CenturyLink / Lumen | Local phone company | – |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.