Area code 920: where it is and who calls from it
Area code 920 is in Wisconsin.
Wisconsin (Appleton, Sheboygan, Oshkosh, Green Bay, Manitowoc, Marquette, Fond du Lac, and parts of eastern Wisconsin, but not Milwaukee County)
| Where | Wisconsin |
|---|---|
| Time zone | Central Time ยท local time |
| In service since | 1997 |
| Overlay | Yes, with 274 |
| Prefixes assigned | 785 of 792 possible (99%) |
Overlay: 920 covers the same area as 274. Overlay areas use 10-digit dialing, so a seven-digit number alone won't connect, and neighbors can have different area codes.
Where 920 numbers started
Every prefix is assigned to a rate center, the local calling area it was set up in. These are the biggest in 920, with how many prefixes each has.
Plus 65 smaller rate centers.
Who holds 920 numbers
- Mobile carrier 27%
- Local phone company 29%
- Internet / business phone carrier 28%
- Paging service 3%
- Phone company 12%
| Carrier | Type | Prefixes | Share |
|---|---|---|---|
| AT&T (local phone) | Local phone company | 141 | 18% |
| Verizon Wireless | Mobile carrier | 62 | 8% |
| UScellular | Mobile carrier | 50 | 6% |
| Level 3 (Lumen) | Internet / business phone carrier | 48 | 6% |
| AT&T Mobility | Mobile carrier | 45 | 6% |
| Onvoy | Internet / business phone carrier | 45 | 6% |
| Charter / Spectrum | Internet / business phone carrier | 43 | 5% |
| Frontier | Local phone company | 42 | 5% |
| Cellcom | Phone company | 33 | 4% |
| T-Mobile (including Sprint) | Mobile carrier | 31 | 4% |
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 920?
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 920 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.