COLLIERVL — TN
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | 6 |
| BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | 5 |
| ONVOY, LLC - TN | 525E | 3 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | 2 |
| NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | 2 |