361
Area code
Statusin service
Introduced1999-02-13
JurisdictionTX, US
Local dialing10D
Time zoneCentral
Last verified2026-09-17
Utilization 69.8% of assignable prefixes assigned
As of 09/17/2026
0%553 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 2001-01-26, 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 | 112 | 20.3% |
| 02 | NEW CINGULAR WIRELESS PCS, LLC - IL | 80 | 14.5% |
| 03 | ONVOY, LLC - TX | 54 | 9.8% |
| 04 | STPCS JOINT VENTURE, LLC | 50 | 9% |
| 05 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 29 | 5.2% |
| 06 | LEVEL 3 COMMUNICATIONS, LLC - TX | 21 | 3.8% |
| 07 | METROPCS, INC. | 18 | 3.3% |
| 08 | FRACTEL, LLC | 14 | 2.5% |
| 09 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 14 | 2.5% |
| 10 | TWC IP ENABLED SERVICES, LLC | 9 | 1.6% |
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- 1999-02-13Area code 361 entered service (created from 512).
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 |
| 1999-02-01 | PL-154 ↗ | NANP - Split of 512 (Texas) Numbering Plan Area (NPA) |