Area code 430
Where 430 is, how it is dialed, which carriers hold its numbers and how many of its codes are in use, from NANPA's 10/01/2026 files.
- State
- TX
- In service
- 2003
- Assigned codes
- 288of 800 possible
- Carriers
- 42
About area code 430
NANPA lists 430 as an in-service geographic area code for Texas, first put into service on February 15, 2003. It is an overlay: 430 and 903 cover the same territory, so neighbors on the same street can have different area codes. It is in the Central time zone. The places with the most assigned exchanges include Longview, Texarkana, Tyler, Greenville, and Paris. By population, its largest named places are Tyler, Longview, Sherman, Texarkana, and Greenville.
| Item | Value |
|---|---|
| State | Texas |
| In service since | February 15, 2003 |
| Assigned by NANPA | December 24, 2001 |
| Overlay | Yes, with 903 |
| Parent area code (NANPA) | 903 |
| Time zone | Central |
| Local calls within the code | ten digits (area code plus number) |
| Assigned central office codes | 288 |
| Rate centers with codes | 159 |
| Carriers holding codes | 42 |
| Pooled codes | 284 |
| Codes assigned since 2020 | 168 |
| Relief planning in progress | No |
Source: NANPA NPA report and utilized central office code file, both dated 10/01/2026.
Cities and towns in area code 430
430 holds 1.8% of the 16,097 central office codes assigned in Texas, the 27th most of the state's 29 codes. 111 Census places could be matched to rate centers with 430 exchanges; the most populous are Tyler (112,000), Longview (83,668), Sherman (50,229), and Texarkana (35,971). Each place page lists the exact prefixes and carriers for that town.
| Place | Population (2024) | Area codes | Exchanges | Carriers |
|---|---|---|---|---|
| Tyler, TX | 112,219 | 430, 903 | 85 | 17 |
| Longview, TX | 83,668 | 430, 903 | 87 | 25 |
| Sherman, TX | 50,229 | 430, 903 | 35 | 12 |
| Texarkana, TX | 35,971 | 430, 903 | 49 | 13 |
| Greenville, TX | 34,355 | 430, 903 | 38 | 17 |
| Denison, TX | 26,446 | 430, 903 | 18 | 8 |
| Corsicana, TX | 25,591 | 430, 903 | 19 | 10 |
| Paris, TX | 25,037 | 430, 903 | 24 | 11 |
| Marshall, TX | 24,263 | 430, 903 | 19 | 7 |
| Palestine, TX | 19,583 | 430, 903 | 16 | 7 |
| Sulphur Springs, TX | 16,891 | 430, 903 | 17 | 10 |
| Mount Pleasant, TX | 16,238 | 430, 903 | 15 | 5 |
| Jacksonville, TX | 14,639 | 430, 903 | 12 | 5 |
| Kilgore, TX | 13,583 | 430, 903 | 14 | 7 |
| Athens, TX | 13,575 | 430, 903 | 19 | 9 |
Population: Census Vintage 2024 estimates for the matched place. Exchanges and carriers: NANPA utilized code file.
How calls are dialed in 430
According to NANPA's dialing-plan data, local calls within 430 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits. Because local calls need the area code, business cards, signage and website copy should always show the full ten-digit number.
Carriers with 430 numbers
42 carriers hold the 288 central office codes assigned in 430. Onvoy, LLC - TX has the most, with 66 (23%). 284 of the codes (99%) are pooled, meaning the code holder shares blocks of 1,000 numbers with other carriers instead of using all 10,000 itself. The code holder is not necessarily the carrier serving a given number today, since numbers can be ported between providers.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Onvoy, LLC - TX | 66 | 23% |
| Fractel, LLC | 35 | 12% |
| TWC Ip Enabled Services, LLC | 21 | 7.3% |
| New Cingular Wireless PCS, LLC - Il | 16 | 5.6% |
| Cellco Partnership d/b/a Verizon Wireless - TX | 11 | 3.8% |
| Valor Telecomm TX, Ld-tx #2 d/b/a Windstream Comm SW | 10 | 3.5% |
| Bandwidth.com CLEC, LLC - TX | 10 | 3.5% |
| Level 3 Communications, LLC - TX | 9 | 3.1% |
| Commio, LLC | 9 | 3.1% |
| Ton80 Communications, LLC | 8 | 2.8% |
| Onvoy Spectrum, LLC | 8 | 2.8% |
| T-mobile USA, INC. | 7 | 2.4% |
Carrier names are the operating company (OCN) names on NANPA's utilized central office code file dated 10/01/2026. A carrier holding a code may port numbers to other carriers.
Local calling areas in 430
NANPA assigns each central office code to a rate center, the local calling area that decides whether a call is local or toll. 430 has codes in 159 rate centers. Rate center names in the file are abbreviations; where one matches a Census place, the table links to that city's local-number page.
| Rate center (NANPA) | Place | Codes |
|---|---|---|
| LONGVIEW | Longview, TX | 15 |
| TEXARKANA | Texarkana, TX | 10 |
| TYLER | Tyler, TX | 10 |
| GREENVILLE | Greenville, TX | 10 |
| PARIS | Paris, TX | 5 |
| ATLANTA | Atlanta, TX | 5 |
| SHERMAN | Sherman, TX | 4 |
| MARSHALL | Marshall, TX | 4 |
| MTPLEASANT | Mount Pleasant, TX | 4 |
| LINDL SWAN | not matched | 4 |
| CORSICANA | Corsicana, TX | 4 |
| HENDERSON | Henderson, TX | 4 |
| SULPHURSPG | Sulphur Springs, TX | 4 |
| ATHENS | Athens, TX | 4 |
| DENISON | Denison, TX | 4 |
| BONHAM | Bonham, TX | 4 |
| BECKVILLE | Beckville, TX | 3 |
| MABANK | Mabank, TX | 3 |
| VIVIAN | not matched | 3 |
| EMORY | Emory, TX | 3 |
| GLADEWATER | Gladewater, TX | 3 |
| LONE OAK | Lone Oak, TX | 3 |
| DOUGLASSVL | Douglassville, TX | 2 |
| WOLFE CITY | Wolfe City, TX | 2 |
| DEKALB | De Kalb, TX | 2 |
Top 25 of 159 rate centers.
Number supply in 430
An area code has 800 possible central office codes that start with 2 through 9, a few of which are reserved (such as N11 service codes and 555). 288 are assigned in 430, 36% of 800. 168 were assigned in 2020 or later.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 4 | 1.5% |
| 2010s | 103 | 37% |
| 2020s | 168 | 61% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
Getting a 430 number for your business
Callata is a business phone system priced at $99 a month with 5 users included, then $20 per additional user. Callata Office includes up to 3 local business numbers, unlimited inbound calling, 1,500 pooled outbound US and Canada minutes per user each month, a browser softphone that can also ring your cell, voicemail with transcription, call recording with AI summaries, business-hours routing and E911 on every number.
Porting a number you already use in area code 430 is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.
AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.
Frequently asked questions
Where is area code 430?
430 is a geographic area code in Texas. Places with the most assigned exchanges include Longview, Texarkana, Tyler, and Greenville.
What time zone is area code 430 in?
NANPA lists 430 in the Central time zone.
When did area code 430 go into service?
NANPA records an in-service date of February 15, 2003. The code was assigned on December 24, 2001.
Is 430 an overlay area code?
Yes. It shares its territory with 903.
Can my business get a 430 phone number?
Callata includes up to 3 local numbers on its $99/month plan (5 users included). Which 430 numbers are open depends on carrier inventory when you choose, and you can port an existing number for free.