Phone numbers in Janesville, Wisconsin
Janesville has 45 phone prefixes in area code 608.
Biggest holders: AT&T (local phone), AT&T Mobility, UScellular. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 49%
- Local phone company 22%
- Internet / business phone carrier 16%
- Paging service 7%
- Phone company 7%
Every prefix in Janesville
Search the first six digits of a number in this list. If it's here, the number started in Janesville with the carrier shown. If it isn't, check the Wisconsin page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 608-201 | AT&T Mobility | Mobile carrier | – |
| 608-202 | American Messaging Services | Paging service | – |
| 608-208 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 608-247 | UScellular | Mobile carrier | – |
| 608-289 | UScellular | Mobile carrier | – |
| 608-290 | UScellular | Mobile carrier | – |
| 608-295 | UScellular | Mobile carrier | – |
| 608-302 | AT&T Mobility | Mobile carrier | – |
| 608-305 | Windstream (PAETEC) | Internet / business phone carrier | 2001 |
| 608-307 | Spok | Paging service | 2001 |
| 608-314 | TDS Metrocom | Phone company | – |
| 608-322 | AT&T Mobility | Mobile carrier | – |
| 608-352 | AT&T Enterprises | Phone company | 2008 |
| 608-359 | T-Mobile (including Sprint) | Mobile carrier | – |
| 608-371 | AT&T (local phone) | Local phone company | 2001 |
| 608-373 | AT&T (local phone) | Local phone company | – |
| 608-436 | AT&T Mobility | Mobile carrier | 2001 |
| 608-449 | Verizon Wireless | Mobile carrier | 2002 |
| 608-530 | AT&T Mobility | Mobile carrier | 2017 |
| 608-531 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 608-554 | Level 3 (Lumen) | Internet / business phone carrier | 2003 |
| 608-563 | Charter / Spectrum | Internet / business phone carrier | 2004 |
| 608-603 | Spok | Paging service | – |
| 608-607 | Charter / Spectrum | Internet / business phone carrier | 2019 |
| 608-718 | AT&T Mobility | Mobile carrier | – |
| 608-728 | Teleport Communications America, LLC Wi | Internet / business phone carrier | – |
| 608-741 | AT&T (local phone) | Local phone company | – |
| 608-743 | AT&T (local phone) | Local phone company | – |
| 608-746 | TON80 Communications | Internet / business phone carrier | 2021 |
| 608-750 | TDS Metrocom | Phone company | – |
| 608-751 | UScellular | Mobile carrier | – |
| 608-752 | AT&T (local phone) | Local phone company | – |
| 608-754 | AT&T (local phone) | Local phone company | – |
| 608-755 | AT&T (local phone) | Local phone company | – |
| 608-756 | AT&T (local phone) | Local phone company | – |
| 608-757 | AT&T (local phone) | Local phone company | – |
| 608-758 | AT&T (local phone) | Local phone company | – |
| 608-774 | AT&T Mobility | Mobile carrier | – |
| 608-815 | T-Mobile (including Sprint) | Mobile carrier | 2022 |
| 608-898 | MetroPCS (T-Mobile) | Mobile carrier | 2016 |
| 608-901 | T-Mobile (including Sprint) | Mobile carrier | 2018 |
| 608-905 | Verizon Wireless | Mobile carrier | 2023 |
| 608-921 | UScellular | Mobile carrier | 2001 |
| 608-931 | UScellular | Mobile carrier | 2001 |
| 608-974 | AT&T Mobility | Mobile carrier | 2025 |
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.