915
Area code
Statusin service
Introduced1947-01-01
JurisdictionTX, US
Local dialing10D
Time zoneCentral / Mountain
Last verified2026-09-17
Utilization 49.2% of assignable prefixes assigned
As of 09/17/2026
0%390 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 2001-02-08, most recent 2026-09-16.
Area codes serve rate-center geographies, not municipal boundaries. “TX” identifies the jurisdiction, not an exact city footprint.
Top assignees
Ranked by assigned prefixes · initial assignee ≠ current carrier| Rank | Assignee | Prefixes | Share |
|---|---|---|---|
| 01 | SOUTHWESTERN BELL | 110 | 28.2% |
| 02 | T-MOBILE USA, INC. | 51 | 13.1% |
| 03 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 32 | 8.2% |
| 04 | ONVOY, LLC - TX | 29 | 7.4% |
| 05 | NEW CINGULAR WIRELESS PCS, LLC - IL | 27 | 6.9% |
| 06 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 13 | 3.3% |
| 07 | BANDWIDTH.COM CLEC, LLC - TX | 13 | 3.3% |
| 08 | MULTIPLE OCN LISTING | 9 | 2.3% |
| 09 | LEVEL 3 COMMUNICATIONS, LLC - TX | 9 | 2.3% |
| 10 | FRACTEL, LLC | 9 | 2.3% |
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- 1947-01-01Area code 915 entered service.
Planning letters & orders
Primary documents| Date | Document | Subject |
|---|---|---|
| 2021-01-08 | PL-556 ↗ | Transition to 10-digit dialing (for 988 as 3-digit access to National Suicide Prevention Lifeline) – supersedes PL-544 |
| 2020-08-17 | PL-544 ↗ | Transition to 10-digit dialing (for 988 as 3-digit access to National Suicide Prevention Hotline |
| 2002-04-24 | PL-322 ↗ | 915 NPA Split, Creating 432 and 325 NPAs (Texas) |