HEIDELBERG — MS
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| TERRA NOVA TELECOM INC. | 145J | 1 |
| COMCAST IP PHONE, LLC | 318J | 1 |
| LEVEL 3 COMMUNICATIONS, LLC - MS | 5178 | 1 |
| TELEPAK NETWORKS, INC. - MS | 5278 | 1 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS | 6396 | 1 |