MARLBORO — OH
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 6025 | 7 |
| CENTURYLINK COMMUNICATIONS, LLC | 508J | 1 |
| AT&T - LOCAL | 7421 | 1 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | 1 |
| OHIO BELL TEL CO | 9321 | 1 |