Area code 353: where it is and who calls from it
Area code 353 is in Wisconsin.
Wisconsin (Madison, La Crosse, Platteville, Beloit, and most of southwestern Wisconsin)
| Where | Wisconsin |
|---|---|
| Time zone | Central Time ยท local time |
| In service since | 2023 |
| Overlay | Yes, with 608 |
| Prefixes assigned | 13 of 792 possible (2%) |
Overlay: 353 covers the same area as 608. Overlay areas use 10-digit dialing, so a seven-digit number alone won't connect, and neighbors can have different area codes.
Where 353 numbers started
Every prefix is assigned to a rate center, the local calling area it was set up in. These are the biggest in 353, with how many prefixes each has.
Who holds 353 numbers
- Mobile carrier 8%
- Internet / business phone carrier 77%
- Phone company 15%
| Carrier | Type | Prefixes | Share |
|---|---|---|---|
| Onvoy | Internet / business phone carrier | 10 | 77% |
| Wavenation | Phone company | 1 | 8% |
| T-Mobile (including Sprint) | Mobile carrier | 1 | 8% |
| Ahoi | Phone company | 1 | 8% |
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.
States served: Wisconsin.
Other area codes in Wisconsin
Got a call from 353?
An area code tells you where a number was first assigned, not where the caller is. People keep their numbers when they move, and scammers can fake any number. If you weren't expecting the call, let it go to voicemail.
If the call shows a 353 number that matches the first six digits of your own, that's often neighbor spoofing. Use the box above to check the full number.
Area code facts from the NANPA area code database (updated 10/06/2026); prefixes and carriers from NANPA's central office code records (updated 2026-10-10). Place description adapted from Wikipedia, CC BY-SA 4.0.