Get a local business phone number in Oneida, TN
Oneida's area code, prefixes and carriers from NANPA records, and how to put a Oneida number in front of your customers.
- Area code
- 423
- Exchanges
- 7NANPA-assigned
- Carriers
- 3
- Population
- 3,875Census 2024 est.
Area codes in Oneida
Oneida, in Scott County, Tennessee, had a Census-estimated population of 3,875 in July 2024. All 7 exchanges NANPA lists for its rate center are in area code 423. 423 is part of an overlay with 729, so a new local number in Oneida may carry any of those codes depending on which have numbers available. Oneida is in the Eastern and Central time zone.
According to NANPA's dialing-plan data, local calls within 423 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.
| Area code | Exchanges here | Share | In service since | Overlay with | Time zone |
|---|---|---|---|---|---|
| 423 | 7 | 100% | 1995 | 729 | Eastern and Central |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Oneida exchanges by carrier
3 carriers hold the 7 exchanges assigned to Oneida's rate center. New Cingular Wireless PCS, LLC - Ga has the most, with 4. 4 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. The table counts codes by the operating company NANPA assigned them to, not by who serves each number today.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| New Cingular Wireless PCS, LLC - Ga | 4 | 57% |
| Highland Tel. Coop, INC. | 2 | 29% |
| Cellco Partnership d/b/a Verizon Wireless - TN | 1 | 14% |
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.
Exchanges (NPA-NXX) assigned in Oneida
A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Oneida. The earliest assignment date recorded in the file for these codes is 2004. 1 of the 7 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 423 | 215, 223, 286, 539, 569, 577, 918 |
Source: NANPA utilized central office code file.
When Oneida's exchanges were assigned
The table groups Oneida's exchanges by the decade NANPA recorded them as assigned.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 2 | 67% |
| 2020s | 1 | 33% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
How local numbers work in Oneida
What a caller sees as "local" is the area code plus prefix. In Oneida, those come from the ONEIDA rate center, as recorded by NANPA.
If your business already has a Oneida number, porting it to Callata is free and keeps it on your cards, listings and vehicles.
Who does business near Oneida
Oneida is outside any Census metro or micropolitan area, so the figures below are statewide. County Business Patterns counted 150,129 business establishments in Tennessee in 2023, employing 2,971,417 people. The largest sectors by establishment count are retail trade (23,463), health care and social assistance (17,524), and other services (except public administration) (15,554).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Limited-service restaurants | 5,735 | 124,268 | 21.7 |
| Full-service restaurants | 4,962 | 121,246 | 24.4 |
| Physician practices | 4,291 | 82,335 | 19.2 |
| Insurance agencies and brokerages | 2,565 | 14,337 | 5.6 |
| Law offices | 2,260 | 13,523 | 6.0 |
| Dental offices | 2,225 | 18,558 | 8.3 |
| Landscaping services | 1,991 | 15,585 | 7.8 |
| Plumbing, heating and air-conditioning contractors | 1,899 | 25,248 | 13.3 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Business phone service in Oneida
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 Oneida 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.
Per-seat phone plans multiply by headcount. For the rounded average establishment size in Tennessee, 20 users on RingCentral RingEX Core come to $600.00 a month and on Ooma Office Pro $499.00, at month-to-month list prices checked September 28, 2026. Callata comes to $399.00 a month for 20 users ($99 a month with 5 users included, then $20 per additional user), below both.
| Provider (plan) | Pricing basis | Per month | Per year |
|---|---|---|---|
| Callata (Callata Office) | $99 incl. 5 users, $20 per extra user | $399.00 | $4,788.00 |
| Quo (Starter) | $19.00 per user | $380.00 | $4,560.00 |
| Nextiva (Core) | $23.00 per user | $460.00 | $5,520.00 |
| Ooma (Office Pro) | $24.95 per user | $499.00 | $5,988.00 |
| Dialpad (Standard) | $27.00 per user | $540.00 | $6,480.00 |
| RingCentral (RingEX Core) | $30.00 per user | $600.00 | $7,200.00 |
Competitor prices are each vendor's published month-to-month list price per user for its lowest plan that includes business calling and texting, checked September 28, 2026: Quo Starter $19, Nextiva Core $23, Ooma Office Pro $24.95 (Essentials excludes texting; one-time $29.95 activation not included), Dialpad Standard $27, RingCentral RingEX Core $30 ($20 billed annually). Prices exclude taxes and fees and may change; annual contracts lower some competitors' prices.
Frequently asked questions
What area code is Oneida, TN?
423. All exchanges NANPA lists for Oneida are in 423.
How many phone companies have exchanges in Oneida?
3, holding 7 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Oneida business number?
Yes. Porting an existing number to Callata is free. Texting from it starts after carrier registration (10DLC), a one-time $49 fee.
How much is a business phone line in Oneida?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 20 users come to $399.00 a month. For comparison, 20 users on RingCentral RingEX Core list at $600.00 a month (checked September 28, 2026).