The 479 area code is northwest Arkansas and the Arkansas River Valley: Fayetteville, Springdale, Rogers, and Bentonville along the I-49 corridor, Fort Smith and Van Buren at the Oklahoma line, Russellville and Clarksville downriver, and Mena to the south — split from 501 on January 19, 2002, never overlaid, and still dialing local calls at seven digits.
An unexpected 479 call is most often ordinary corridor traffic — a Bentonville supplier office, a Fort Smith clinic, a Fayetteville landlord returning a message. The three digits identify a region, never a particular caller.
First facts on 479
| At a glance | 479 |
|---|---|
| Dates from | January 19, 2002, at 12:01 a.m. Central |
| Parent code | 501 — 479 took the western portion of its territory |
| Overlay history | None; nothing in jeopardy, nothing in relief planning in NANPA’s current data |
| Territory anchors | Fayetteville, Springdale, Rogers, Bentonville; Fort Smith and Van Buren; Russellville |
| Dialing plan | Seven digits on local calls inside 479; ten digits on local calls into a neighboring code; 1 plus ten on toll |
| Exhaust projection | First quarter of 2037 in the April 2026 study |
Approved in July, redrawn in September
Arkansas dialed one code — the 501 area code, in service since January 1, 1947 — until 870 took the state’s east and south on April 14, 1997. Four years later the northwest’s turn came: on July 10, 2001, the Arkansas Public Service Commission approved a geographic split as 501 relief in docket 00-267-U, Order 6, and NANPA’s records show 479 assigned that same day.
Planning Letter PL-295 (August 16, 2001) published the plan, naming Fort Smith, Springdale, Clarksville, Morrilton, and Fayetteville among the areas headed for the new code. Then the commission thought again. Order 8, issued September 13, 2001, revised the relief decision and moved the boundary line itself — so PL-302 (September 26, 2001) superseded the first letter with an amended split. Morrilton dropped off the departing roster and stayed with 501; the examples now read Bentonville, Clarksville, Fort Smith, Hector, Springdale, and Fayetteville.
The launch ran on the original clock despite the redraw. The split and its permissive period began at 12:01 a.m. Central on January 19, 2002, and either code completed a call into the new territory until 12:01 a.m. on July 20, 2002, when misdials went to intercept. The commission built in a 60-day buffer besides: no prefix assigned in 479 could take effect before September 20, 2002. Carriers checked their routing against a recorded test number, 479-999-1111, in service from December 19, 2001 through August 20, 2002.
What territory does the 479 area code cover?
The corridor is the center of gravity. Fayetteville and the University of Arkansas sit at its south end, then Springdale, Rogers, and Bentonville stack northward along I-49, with Siloam Springs west on the state line and the Ozark resort town of Eureka Springs in the hills beyond — every one of them a rate center on the map NANPA attached to PL-302.
The rest of the footprint follows the Arkansas River southeast and the mountains south: Van Buren, Alma, Ozark, Clarksville, Russellville, and Dardanelle along the valley, Paris and Booneville under the ridges, Waldron and Mena down toward the Ouachitas. Fort Smith anchors the river’s big bend — and faces Oklahoma directly across it, where the numbers answer to 918 and its 539 overlay. Every 479 clock keeps Central time.
The dialing plan a November meeting rewrote
The split letters originally prescribed 1 plus ten digits for local calls crossing into a neighboring code. Before the code ever carried traffic, the industry reconsidered: NANPA convened a meeting on November 8, 2001, consensus shifted, and Planning Letter PL-310 (November 15, 2001) recorded the revision. From mandatory dialing onward, a local call inside the home code would be seven digits, a local call into a foreign code a plain ten, and toll calls 1 plus ten. That 2001 plan is exactly what NANPA’s database still lists for 479 today.
The 2021 national dialing shake-up passed the code by entirely. Planning Letter PL-556 — January 8, 2021, PL-544’s replacement — converted the 82 area codes where 988 already worked as an ordinary prefix under seven-digit dialing, clearing the way for the crisis line — and Arkansas’s only entry on that list was 501. With 870 overlaid by 327 since February 20, 2024, that leaves 479 as the last Arkansas code where seven digits still complete a local call.
2037 on the forecast, nothing on the calendar
NANPA’s 2026-1 NPA Exhaust Analysis — the April 2026 study, built on utilization and central-office prefix data through March 1 — dates 479’s exhaust to the first quarter of 2037. The pressure actually eased at the last reading: the October 2025 study had said the second quarter of 2036, so the date moved three quarters further out. The follow-up corrections NANPA issued on July 6, 2026 touched four Texas forecast entries and nothing in Arkansas.
Still, 2037 is the earliest date in the state. The same analysis puts 501 at the third quarter of 2044 and the 870/327 pair out at the third quarter of 2057 — the youngest of the state’s three numbering territories will need relief first, which is the region’s growth written into the numbering ledger. NANPA’s mid-August 2026 data shows neither a jeopardy declaration nor a relief project, and when planning does eventually start, the modern default is an overlay on the same map, a trade-off our primer on how area codes work walks through.
Selling into northwest Arkansas on local digits
The corridor is thick with out-of-town callers by design — supplier teams working Walmart’s Bentonville home office, freight desks dealing with J.B. Hunt in Lowell, food-industry reps calling on Tyson in Springdale. In a market where so much inbound rings from elsewhere, a 479 display separates a caller from that crowd, and the answer-rate math behind matching your number to your market is laid out in our local presence dialing guide.
The digits alone are no credential, though. Caller-ID spoofing can clothe any call in a 479 number, so carriers and analytics engines judge the signature that travels with the call — who signed it, and at what attestation level — rather than the three digits on the screen.
That signing is done in-house here. SIPNEX operates under its own FCC authorization — carrier of record, not a reseller — provisions local DID numbers market by market with northwest Arkansas inventory as stock allows, and delivers them over SIP trunking to the PBX or dialer already on the desk. Outbound calls go signed A-level under the company’s own STIR/SHAKEN certificate, and toll-free service is administered directly through SIPNEX’s RespOrg registration.
The 479 mailbag
Is Bentonville in the 479 area code?
Yes — Bentonville has carried 479 numbers since the code’s first day, January 19, 2002. NANPA’s amended split letter, PL-302, named it among the example areas moving out of 501, alongside Fayetteville, Springdale, Fort Smith, Clarksville, and Hector. The whole I-49 corridor — Bentonville, Rogers, Springdale, Fayetteville — shares the code, so Walmart’s home office and the vendor community around it all dial from the same three digits.
How do you dial local calls from a 479 number?
Seven digits, so long as the call stays inside 479. Planning Letter PL-310 (November 15, 2001) set the plan that still governs: local calls within the home code are seven digits, local calls into a neighboring code are dialed as a plain ten, and toll calls take 1 plus ten. No overlay has ever forced the region onto mandatory ten-digit dialing, which makes 479 the last Arkansas code where seven digits still connect.
Did Morrilton ever move to the 479 area code?
Only on paper, for about six weeks. NANPA’s first split letter, PL-295 (August 16, 2001), listed Morrilton among the communities bound for 479. The Arkansas PSC then revised the boundary in Order 8 of docket 00-267-U on September 13, 2001, and the superseding PL-302 kept Morrilton in 501 — the example roster picked up Hector and Bentonville instead. By the time 479 went live in January 2002, Morrilton’s place in 501 was settled, and it has never changed.
How much runway do 479 area code prefixes have?
About a decade — NANPA’s April 2026 exhaust analysis projects the first quarter of 2037, three quarters later than the October 2025 forecast expected. That is the nearest exhaust date in Arkansas, ahead of 501 in 2044 and the 870/327 pair in 2057, but the code sits outside jeopardy, with no relief planning on file. The July 6, 2026 forecast revisions were limited to four Texas entries.
Do 479 area code numbers work for businesses outside Arkansas?
Yes — a number is anchored to a rate center, not to a street address. A firm anywhere in the country can order 479 DID numbers in the exchanges its customers know and route them over SIP trunking to any desk that answers. The number rings, displays, and returns calls exactly as if it sat in Fayetteville or Fort Smith, provisioned under SIPNEX’s own FCC carrier authorization.
From the corridor to the river bend, the local number is a 479 number — and SIPNEX keeps them in stock where rate centers allow, delivered over SIP with an A-level signature on every outbound call. Rates are published for inspection, the contact page reaches the carrier team, and (833) 665-2220 reaches them out loud.
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