Phone numbers in Madison, Wisconsin
Madison has 200 phone prefixes in area codes 353, 608.
Biggest holders: AT&T (local phone), UScellular, AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 29%
- Local phone company 31%
- Internet / business phone carrier 28%
- Paging service 3%
- Phone company 8%
Every prefix in Madison
Search the first six digits of a number in this list. If it's here, the number started in Madison with the carrier shown. If it isn't, check the Wisconsin page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 353-200 | Onvoy | Internet / business phone carrier | 2025 |
| 353-201 | Wavenation | Phone company | 2025 |
| 353-465 | Ahoi | Phone company | 2026 |
| 608-204 | TDS Metrocom | Phone company | – |
| 608-206 | UScellular | Mobile carrier | – |
| 608-209 | T-Mobile (including Sprint) | Mobile carrier | – |
| 608-210 | TDS Metrocom | Phone company | – |
| 608-212 | UScellular | Mobile carrier | – |
| 608-213 | T-Mobile (including Sprint) | Mobile carrier | – |
| 608-215 | Verizon Wireless | Mobile carrier | – |
| 608-216 | AT&T (local phone) | Local phone company | – |
| 608-217 | T-Mobile (including Sprint) | Mobile carrier | – |
| 608-218 | AT&T (local phone) | Local phone company | – |
| 608-219 | UScellular | Mobile carrier | – |
| 608-220 | UScellular | Mobile carrier | – |
| 608-221 | AT&T (local phone) | Local phone company | – |
| 608-222 | AT&T (local phone) | Local phone company | – |
| 608-223 | AT&T (local phone) | Local phone company | – |
| 608-224 | AT&T (local phone) | Local phone company | – |
| 608-225 | UScellular | Mobile carrier | – |
| 608-226 | AT&T (local phone) | Local phone company | – |
| 608-227 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 608-228 | UScellular | Mobile carrier | – |
| 608-229 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 608-230 | TDS Metrocom | Phone company | – |
| 608-231 | AT&T (local phone) | Local phone company | – |
| 608-232 | AT&T (local phone) | Local phone company | – |
| 608-233 | AT&T (local phone) | Local phone company | – |
| 608-234 | Teleport Communications America, LLC Wi | Internet / business phone carrier | – |
| 608-235 | UScellular | Mobile carrier | – |
| 608-236 | AT&T (local phone) | Local phone company | – |
| 608-237 | Teleport Communications America, LLC Wi | Internet / business phone carrier | – |
| 608-238 | AT&T (local phone) | Local phone company | – |
| 608-239 | T-Mobile (including Sprint) | Mobile carrier | – |
| 608-240 | AT&T (local phone) | Local phone company | – |
| 608-241 | AT&T (local phone) | Local phone company | – |
| 608-242 | AT&T (local phone) | Local phone company | – |
| 608-243 | AT&T (local phone) | Local phone company | – |
| 608-244 | AT&T (local phone) | Local phone company | – |
| 608-245 | AT&T (local phone) | Local phone company | – |
| 608-246 | AT&T (local phone) | Local phone company | – |
| 608-249 | AT&T (local phone) | Local phone company | – |
| 608-250 | AT&T (local phone) | Local phone company | – |
| 608-251 | AT&T (local phone) | Local phone company | – |
| 608-252 | AT&T (local phone) | Local phone company | – |
| 608-255 | AT&T (local phone) | Local phone company | – |
| 608-256 | AT&T (local phone) | Local phone company | – |
| 608-257 | AT&T (local phone) | Local phone company | – |
| 608-258 | AT&T (local phone) | Local phone company | – |
| 608-259 | AT&T (local phone) | Local phone company | – |
| 608-260 | AT&T (local phone) | Local phone company | – |
| 608-261 | AT&T (local phone) | Local phone company | – |
| 608-262 | AT&T (local phone) | Local phone company | – |
| 608-263 | AT&T (local phone) | Local phone company | – |
| 608-264 | AT&T (local phone) | Local phone company | – |
| 608-265 | AT&T (local phone) | Local phone company | – |
| 608-266 | AT&T (local phone) | Local phone company | – |
| 608-267 | AT&T (local phone) | Local phone company | – |
| 608-268 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 608-270 | AT&T (local phone) | Local phone company | – |
| 608-271 | AT&T (local phone) | Local phone company | – |
| 608-273 | AT&T (local phone) | Local phone company | – |
| 608-274 | AT&T (local phone) | Local phone company | – |
| 608-275 | AT&T (local phone) | Local phone company | – |
| 608-276 | AT&T (local phone) | Local phone company | – |
| 608-277 | AT&T (local phone) | Local phone company | – |
| 608-278 | AT&T (local phone) | Local phone company | – |
| 608-279 | UScellular | Mobile carrier | – |
| 608-280 | AT&T (local phone) | Local phone company | – |
| 608-281 | AT&T (local phone) | Local phone company | – |
| 608-282 | AT&T (local phone) | Local phone company | – |
| 608-283 | AT&T (local phone) | Local phone company | – |
| 608-284 | AT&T (local phone) | Local phone company | – |
| 608-285 | AT&T (local phone) | Local phone company | – |
| 608-286 | AT&T (local phone) | Local phone company | – |
| 608-287 | AT&T (local phone) | Local phone company | – |
| 608-288 | AT&T (local phone) | Local phone company | – |
| 608-292 | Nuso | Internet / business phone carrier | 2020 |
| 608-294 | AT&T (local phone) | Local phone company | – |
| 608-298 | AT&T (local phone) | Local phone company | – |
| 608-301 | AT&T (local phone) | Local phone company | – |
| 608-303 | Spok | Paging service | – |
| 608-308 | TDS Metrocom | Phone company | – |
| 608-310 | TDS Metrocom | Phone company | – |
| 608-316 | Teleport Communications America, LLC Wi | Internet / business phone carrier | – |
| 608-320 | AT&T Mobility | Mobile carrier | – |
| 608-321 | TDS Metrocom | Phone company | – |
| 608-327 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 608-332 | AT&T Mobility | Mobile carrier | – |
| 608-333 | TDS Metrocom | Phone company | 2004 |
| 608-334 | AT&T Mobility | Mobile carrier | – |
| 608-335 | AT&T Mobility | Mobile carrier | – |
| 608-338 | AT&T Mobility | Mobile carrier | – |
| 608-345 | Verizon Wireless | Mobile carrier | – |
| 608-347 | Verizon Wireless | Mobile carrier | – |
| 608-354 | Teleport Communications America, LLC Wi | Internet / business phone carrier | – |
| 608-358 | AT&T Mobility | Mobile carrier | 2001 |
| 608-376 | American Messaging Services | Paging service | – |
| 608-381 | Verizon Wireless | Mobile carrier | – |
| 608-395 | AT&T (local phone) | Local phone company | – |
| 608-398 | Airespring | Phone company | 2020 |
| 608-400 | Onvoy | Internet / business phone carrier | 2017 |
| 608-405 | Telnyx | Internet / business phone carrier | 2016 |
| 608-416 | Level 3 (Lumen) | Internet / business phone carrier | 2014 |
| 608-417 | CenturyLink / Lumen | Local phone company | 2007 |
| 608-421 | Nuso | Internet / business phone carrier | 2013 |
| 608-422 | UScellular | Mobile carrier | 2014 |
| 608-438 | UScellular | Mobile carrier | 2002 |
| 608-440 | Teleport Communications America, LLC Wi | Internet / business phone carrier | 2014 |
| 608-441 | TDS Metrocom | Phone company | – |
| 608-442 | TDS Metrocom | Phone company | 2001 |
| 608-443 | TDS Metrocom | Phone company | 2002 |
| 608-444 | UScellular | Mobile carrier | – |
| 608-445 | UScellular | Mobile carrier | 2001 |
| 608-446 | TDS Metrocom | Phone company | – |
| 608-458 | AT&T (local phone) | Local phone company | 2001 |
| 608-467 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 608-469 | Verizon Wireless | Mobile carrier | 2002 |
| 608-471 | Peerless Network Of Wisconsin | Internet / business phone carrier | – |
| 608-504 | Onvoy | Internet / business phone carrier | – |
| 608-509 | Verizon Wireless | Mobile carrier | 2006 |
| 608-512 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 608-513 | UScellular | Mobile carrier | – |
| 608-514 | Windstream (PAETEC) | Internet / business phone carrier | 2008 |
| 608-515 | T-Mobile (including Sprint) | Mobile carrier | 2009 |
| 608-516 | UScellular | Mobile carrier | – |
| 608-520 | Bandwidth | Internet / business phone carrier | 2010 |
| 608-535 | Bandwidth | Internet / business phone carrier | 2010 |
| 608-550 | American Messaging Services | Paging service | – |
| 608-556 | AT&T Mobility | Mobile carrier | – |
| 608-559 | American Messaging Services | Paging service | – |
| 608-571 | Peerless Network Of Wisconsin | Internet / business phone carrier | 2014 |
| 608-572 | Verizon Wireless | Mobile carrier | – |
| 608-575 | UScellular | Mobile carrier | – |
| 608-576 | UScellular | Mobile carrier | – |
| 608-577 | UScellular | Mobile carrier | 2002 |
| 608-578 | Spok | Paging service | – |
| 608-590 | Onvoy | Internet / business phone carrier | 2018 |
| 608-598 | UScellular | Mobile carrier | 2015 |
| 608-608 | Onvoy | Internet / business phone carrier | 2024 |
| 608-609 | AT&T Mobility | Mobile carrier | 2008 |
| 608-616 | Bandwidth | Internet / business phone carrier | 2008 |
| 608-620 | Level 3 (Lumen) | Internet / business phone carrier | 2010 |
| 608-621 | MCImetro (Verizon Business) | Internet / business phone carrier | 2020 |
| 608-622 | AT&T Mobility | Mobile carrier | 2008 |
| 608-628 | AT&T Mobility | Mobile carrier | 2002 |
| 608-630 | Charter / Spectrum | Internet / business phone carrier | – |
| 608-640 | UScellular | Mobile carrier | 2016 |
| 608-657 | Spok | Paging service | – |
| 608-658 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 608-661 | TDS Metrocom | Phone company | – |
| 608-663 | TDS Metrocom | Phone company | – |
| 608-665 | TDS Metrocom | Phone company | 2008 |
| 608-669 | MCImetro (Verizon Business) | Internet / business phone carrier | 2003 |
| 608-673 | IP Horizon | Internet / business phone carrier | 2021 |
| 608-690 | Csc Wireless | Mobile carrier | 2020 |
| 608-692 | AT&T Mobility | Mobile carrier | – |
| 608-695 | AT&T Mobility | Mobile carrier | – |
| 608-698 | AT&T Mobility | Mobile carrier | – |
| 608-707 | T-Mobile (including Sprint) | Mobile carrier | – |
| 608-709 | Level 3 (Lumen) | Internet / business phone carrier | 2012 |
| 608-710 | Onvoy | Internet / business phone carrier | 2019 |
| 608-712 | UScellular | Mobile carrier | – |
| 608-716 | Level 3 (Lumen) | Internet / business phone carrier | 2019 |
| 608-720 | Teleport Communications America, LLC Wi | Internet / business phone carrier | 2016 |
| 608-721 | Onvoy | Internet / business phone carrier | 2008 |
| 608-722 | Hd Carrier | Internet / business phone carrier | 2020 |
| 608-729 | Level 3 (Lumen) | Internet / business phone carrier | 2005 |
| 608-733 | AT&T Mobility | Mobile carrier | 2017 |
| 608-740 | Windstream (PAETEC) | Internet / business phone carrier | 2022 |
| 608-770 | AT&T Mobility | Mobile carrier | – |
| 608-772 | AT&T Mobility | Mobile carrier | – |
| 608-800 | Onvoy | Internet / business phone carrier | 2015 |
| 608-807 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 608-817 | Bandwidth | Internet / business phone carrier | 2022 |
| 608-819 | Windstream (PAETEC) | Internet / business phone carrier | 2001 |
| 608-843 | UScellular | Mobile carrier | 2003 |
| 608-852 | Verizon Wireless | Mobile carrier | 2002 |
| 608-866 | Terra Nova Telecom | Internet / business phone carrier | 2020 |
| 608-867 | Commio | Internet / business phone carrier | 2019 |
| 608-886 | Verizon Wireless | Mobile carrier | – |
| 608-888 | Onvoy | Internet / business phone carrier | 2015 |
| 608-890 | AT&T (local phone) | Local phone company | 2003 |
| 608-893 | Nuso | Internet / business phone carrier | 2023 |
| 608-895 | Twilio | Internet / business phone carrier | 2021 |
| 608-896 | Boost / Virgin Mobile | Mobile carrier | 2023 |
| 608-906 | Onvoy | Internet / business phone carrier | 2006 |
| 608-910 | Verizon Wireless | Mobile carrier | 2024 |
| 608-914 | Teleport Communications America, LLC Wi | Internet / business phone carrier | 2024 |
| 608-915 | Teleport Communications America, LLC Wi | Internet / business phone carrier | 2024 |
| 608-916 | Teleport Communications America, LLC Wi | Internet / business phone carrier | 2024 |
| 608-940 | Onvoy | Internet / business phone carrier | 2024 |
| 608-949 | Peerless Network Of Wisconsin | Internet / business phone carrier | – |
| 608-957 | AT&T (local phone) | Local phone company | – |
| 608-960 | AT&T Mobility | Mobile carrier | 2014 |
| 608-961 | Onvoy | Internet / business phone carrier | 2025 |
| 608-977 | AT&T (local phone) | Local phone company | 2015 |
| 608-982 | Vonage America | Internet / business phone carrier | 2018 |
| 608-984 | AT&T Mobility | Mobile carrier | 2025 |
| 608-999 | Onvoy | Internet / business phone carrier | 2015 |
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.