Phone numbers in Oconomowoc, Wisconsin
Oconomowoc has 19 phone prefixes in area code 262.
Biggest holders: AT&T (local phone), Verizon Wireless, Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 32%
- Local phone company 21%
- Internet / business phone carrier 42%
- Paging service 5%
Every prefix in Oconomowoc
Search the first six digits of a number in this list. If it's here, the number started in Oconomowoc with the carrier shown. If it isn't, check the Wisconsin page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 262-200 | AT&T (local phone) | Local phone company | 2004 |
| 262-244 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 262-254 | Onvoy | Internet / business phone carrier | 2020 |
| 262-263 | Verizon Wireless | Mobile carrier | 2019 |
| 262-266 | Level 3 (Lumen) | Internet / business phone carrier | 2020 |
| 262-269 | T-Mobile (including Sprint) | Mobile carrier | – |
| 262-315 | Verizon Wireless | Mobile carrier | 2023 |
| 262-354 | Teleport Communications America, LLC Wi | Internet / business phone carrier | 2002 |
| 262-433 | Fractel | Internet / business phone carrier | 2021 |
| 262-434 | T-Mobile (including Sprint) | Mobile carrier | – |
| 262-443 | Verizon Wireless | Mobile carrier | 2002 |
| 262-449 | Onvoy | Internet / business phone carrier | 2024 |
| 262-468 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 262-490 | AT&T Mobility | Mobile carrier | – |
| 262-560 | AT&T (local phone) | Local phone company | – |
| 262-567 | AT&T (local phone) | Local phone company | – |
| 262-569 | AT&T (local phone) | Local phone company | – |
| 262-730 | American Messaging Services | Paging service | – |
| 262-804 | Teleport Communications America, LLC Wi | Internet / business phone carrier | – |
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.