430
Area code
TX
United States geographic area code, in service since 2003-02-15. Part of the 430/903 overlay complex — ten-digit dialing required.
Statusin service
Introduced2003-02-15
JurisdictionTX, US
Local dialing10D
Time zoneCentral
Last verified2026-09-17
Utilization 38.3% of assignable prefixes assigned
As of 09/17/2026
0%303 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 2004-09-09, most recent 2026-09-15.
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 | ONVOY, LLC - TX | 66 | 21.8% |
| 02 | FRACTEL, LLC | 35 | 11.6% |
| 03 | TWC IP ENABLED SERVICES, LLC | 21 | 6.9% |
| 04 | NEW CINGULAR WIRELESS PCS, LLC - IL | 16 | 5.3% |
| 05 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 11 | 3.6% |
| 06 | VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW | 10 | 3.3% |
| 07 | BANDWIDTH.COM CLEC, LLC - TX | 10 | 3.3% |
| 08 | MULTIPLE OCN LISTING | 9 | 3% |
| 09 | LEVEL 3 COMMUNICATIONS, LLC - TX | 9 | 3% |
| 10 | COMMIO, LLC | 9 | 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- 2002-02-06 NPA 430 to Overlay NPA 903 (Texas)
- 2003-02-15Area code 430 entered service (created from 903).
Planning letters & orders
Primary documents| Date | Document | Subject |
|---|---|---|
| 2002-02-06 | PL-313 ↗ | NPA 430 to Overlay NPA 903 (Texas) |