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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.

Area code 430: NANPA facts
ItemValue
StateTexas
In service sinceFebruary 15, 2003
Assigned by NANPADecember 24, 2001
OverlayYes, with 903
Parent area code (NANPA)903
Time zoneCentral
Local calls within the codeten digits (area code plus number)
Assigned central office codes288
Rate centers with codes159
Carriers holding codes42
Pooled codes284
Codes assigned since 2020168
Relief planning in progressNo

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.

Most populous places with 430 exchanges
PlacePopulation (2024)Area codesExchangesCarriers
Tyler, TX112,219430, 9038517
Longview, TX83,668430, 9038725
Sherman, TX50,229430, 9033512
Texarkana, TX35,971430, 9034913
Greenville, TX34,355430, 9033817
Denison, TX26,446430, 903188
Corsicana, TX25,591430, 9031910
Paris, TX25,037430, 9032411
Marshall, TX24,263430, 903197
Palestine, TX19,583430, 903167
Sulphur Springs, TX16,891430, 9031710
Mount Pleasant, TX16,238430, 903155
Jacksonville, TX14,639430, 903125
Kilgore, TX13,583430, 903147
Athens, TX13,575430, 903199

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.

Largest code holders in area code 430
Carrier (NANPA operating company)ExchangesShare
Onvoy, LLC - TX6623%
Fractel, LLC3512%
TWC Ip Enabled Services, LLC217.3%
New Cingular Wireless PCS, LLC - Il165.6%
Cellco Partnership d/b/a Verizon Wireless - TX113.8%
Valor Telecomm TX, Ld-tx #2 d/b/a Windstream Comm SW103.5%
Bandwidth.com CLEC, LLC - TX103.5%
Level 3 Communications, LLC - TX93.1%
Commio, LLC93.1%
Ton80 Communications, LLC82.8%
Onvoy Spectrum, LLC82.8%
T-mobile USA, INC.72.4%

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 centers in area code 430 by assigned codes
Rate center (NANPA)PlaceCodes
LONGVIEWLongview, TX15
TEXARKANATexarkana, TX10
TYLERTyler, TX10
GREENVILLEGreenville, TX10
PARISParis, TX5
ATLANTAAtlanta, TX5
SHERMANSherman, TX4
MARSHALLMarshall, TX4
MTPLEASANTMount Pleasant, TX4
LINDL SWANnot matched4
CORSICANACorsicana, TX4
HENDERSONHenderson, TX4
SULPHURSPGSulphur Springs, TX4
ATHENSAthens, TX4
DENISONDenison, TX4
BONHAMBonham, TX4
BECKVILLEBeckville, TX3
MABANKMabank, TX3
VIVIANnot matched3
EMORYEmory, TX3
GLADEWATERGladewater, TX3
LONE OAKLone Oak, TX3
DOUGLASSVLDouglassville, TX2
WOLFE CITYWolfe City, TX2
DEKALBDe Kalb, TX2

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.

Area code 430: central office codes by decade assigned
Decade assignedExchangesShare
2000s41.5%
2010s10337%
2020s16861%

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.