Phone numbers in Spencer, Iowa
Spencer has 11 phone prefixes in area code 712.
Biggest holders: Verizon Wireless, UScellular, CenturyLink / Lumen. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 55%
- Local phone company 18%
- Internet / business phone carrier 9%
- Phone company 18%
Every prefix in Spencer
Search the first six digits of a number in this list. If it's here, the number started in Spencer with the carrier shown. If it isn't, check the Iowa page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 712-232 | Aureon Communications | Phone company | 2013 |
| 712-240 | UScellular | Mobile carrier | – |
| 712-260 | Verizon Wireless | Mobile carrier | – |
| 712-262 | CenturyLink / Lumen | Local phone company | – |
| 712-264 | CenturyLink / Lumen | Local phone company | – |
| 712-270 | UScellular | Mobile carrier | – |
| 712-346 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 712-363 | Verizon Wireless | Mobile carrier | – |
| 712-514 | Verizon Wireless | Mobile carrier | 2019 |
| 712-580 | Spencer Municipal Communication Utility | Phone company | – |
| 712-584 | MCImetro (Verizon Business) | Internet / business phone carrier | 2005 |
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.