806
Area code
TX
United States geographic area code, in service since 1957-01-01.
Statusin service
Introduced1957-01-01
JurisdictionTX, US
Local dialing10D
Time zoneCentral
Last verified2026-09-17
Utilization 94.8% of assignable prefixes assigned
As of 09/17/2026
0%751 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 2001-02-12, most recent 2026-07-08.
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 | 121 | 16.1% |
| 02 | VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW | 89 | 11.9% |
| 03 | NEW CINGULAR WIRELESS PCS, LLC - IL | 71 | 9.5% |
| 04 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 48 | 6.4% |
| 05 | ONVOY, LLC - TX | 40 | 5.3% |
| 06 | LEVEL 3 COMMUNICATIONS, LLC - TX | 28 | 3.7% |
| 07 | AMA COMM., LLC DBA AMA*TECHTEL COMMUNICATIONS-TX | 26 | 3.5% |
| 08 | VEXUS | 23 | 3.1% |
| 09 | T-MOBILE USA, INC. | 22 | 2.9% |
| 10 | VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW | 20 | 2.7% |
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- 1957-01-01Area code 806 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 |