ALTON — OH
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| SPOK, INC. | 6630 | 7 |
| OHIO BELL TEL CO | 9321 | 5 |
| BANDWIDTH.COM CLEC, LLC - OH | 001F | 3 |
| ONVOY, LLC - OH | 464C | 3 |
| LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | 2 |
Data last updated: March 10, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| SPOK, INC. | 6630 | 7 |
| OHIO BELL TEL CO | 9321 | 5 |
| BANDWIDTH.COM CLEC, LLC - OH | 001F | 3 |
| ONVOY, LLC - OH | 464C | 3 |
| LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | 2 |