615
Area code
TN
United States geographic area code, in service since 1954-01-01. Part of the 615/629 overlay complex — ten-digit dialing required.
Statusin service
Introduced1954-01-01
JurisdictionTN, US
Local dialing10D
Time zoneCentral
Last verified2026-09-17
Utilization 101% of assignable prefixes assigned
As of 09/17/2026
0%800 of ~792 assignable NXX values (200–999 excl. N11)100%
Prefix-level assignment does not equal number-level exhaustion; thousands-block pooling extends capacity. First assignment on record 2001-01-22, most recent 2026-09-04.
Area codes serve rate-center geographies, not municipal boundaries. “TN” identifies the jurisdiction, not an exact city footprint.
Top assignees
Ranked by assigned prefixes · initial assignee ≠ current carrier| Rank | Assignee | Prefixes | Share |
|---|---|---|---|
| 01 | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 228 | 28.5% |
| 02 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 88 | 11% |
| 03 | NEW CINGULAR WIRELESS PCS, LLC - GA | 80 | 10% |
| 04 | PAETEC ITEL, LLC | 64 | 8% |
| 05 | POWERTEL NASHVILLE LICENSES, INC. | 52 | 6.5% |
| 06 | LEVEL 3 COMMUNICATIONS, LLC - TN | 51 | 6.4% |
| 07 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 37 | 4.6% |
| 08 | BANDWIDTH.COM CLEC, LLC - TN | 25 | 3.1% |
| 09 | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 22 | 2.8% |
| 10 | ONVOY, LLC - TN | 21 | 2.6% |
Important: these are initial assignees from NANPA CO-code records — the carrier a prefix was originally assigned to. Because of number portability, the current serving carrier of any individual number may differ.
Change history
Recorded events for this NPA- 2013-12-04 NPA 629 to Overlay NPA 615 (Tennessee)
- 1954-01-01Area code 615 entered service.
Planning letters & orders
Primary documents| Date | Document | Subject |
|---|---|---|
| 2013-12-04 | PL-459 ↗ | NPA 629 to Overlay NPA 615 (Tennessee) |
| 1997-08-15 | PL-081 ↗ | NANP-Split of 615 (Tennessee) Numbering Plan Area (NPA) |