PTWASHIGTN — WI
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| WISCONSIN BELL INC | 9327 | 2 |
| ONVOY, LLC - WI | 225C | 1 |
| AT&T ENTERPRISES, LLC | 516C | 1 |
| ONVOY SPECTRUM, LLC | 624H | 1 |
| SPOK, INC. | 6630 | 1 |
Data last updated: March 10, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| WISCONSIN BELL INC | 9327 | 2 |
| ONVOY, LLC - WI | 225C | 1 |
| AT&T ENTERPRISES, LLC | 516C | 1 |
| ONVOY SPECTRUM, LLC | 624H | 1 |
| SPOK, INC. | 6630 | 1 |