CallataGuidesGet a local business phone number in Oliver Springs, TN
Oliver Springs's area code, prefixes and carriers from NANPA records, and how to put a Oliver Springs number in front of your customers.
- Area code
- 865
- Exchanges
- 4NANPA-assigned
- Carriers
- 4
- Population
- 3,433Census 2024 est.
Area codes in Oliver Springs
With 3,433 residents in the Census 2024 estimate, Oliver Springs sits in Anderson County, Tennessee. All 4 exchanges NANPA lists for its rate center are in area code 865. Oliver Springs is in the Eastern time zone.
According to NANPA's dialing-plan data, local calls within 865 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 |
|---|---|---|---|---|---|
| 865 | 4 | 100% | 1999 | none | Eastern |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Oliver Springs exchanges by carrier
4 carriers hold the 4 exchanges assigned to Oliver Springs's rate center. Onvoy, LLC - TN has the most, with 1. 4 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Oliver Springs can come from any of these blocks; once it is yours, porting lets it move between providers.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Onvoy, LLC - TN | 1 | 25% |
| Bellsouth Telecomm INC d/b/a South Central Bell Tel | 1 | 25% |
| Level 3 Communications, LLC - TN | 1 | 25% |
| Ton80 Communications, LLC | 1 | 25% |
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 Oliver Springs
Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Oliver Springs's rate center (OLIVER SPG). The earliest assignment date recorded in the file for these codes is 2004. 1 of the 4 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 865 | 432, 435, 730, 822 |
Source: NANPA utilized central office code file.
When Oliver Springs's exchanges were assigned
The table groups Oliver Springs's exchanges by the decade NANPA recorded them as assigned.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 1 | 33% |
| 2010s | 1 | 33% |
| 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 Oliver Springs
What a caller sees as "local" is the area code plus prefix. In Oliver Springs, those come from the OLIVER SPG rate center, as recorded by NANPA.
If your business already has a Oliver Springs number, porting it to Callata is free and keeps it on your cards, listings and vehicles.
Who does business near Oliver Springs
Oliver Springs is part of the Knoxville, TN metro area, home to 958,000 people in 2024. County Business Patterns counted 19,652 business establishments in the Knoxville, TN metro area in 2023, employing 385,052 people. The largest sectors by establishment count are retail trade (2,994), health care and social assistance (2,352), and other services (except public administration) (2,154).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Limited-service restaurants | 728 | 17,042 | 23.4 |
| Physician practices | 590 | 9,011 | 15.3 |
| Full-service restaurants | 578 | 16,572 | 28.7 |
| Insurance agencies and brokerages | 340 | 2,058 | 6.1 |
| Law offices | 314 | 1,748 | 5.6 |
| Landscaping services | 312 | 2,557 | 8.2 |
| Dental offices | 304 | 2,436 | 8.0 |
| Plumbing, heating and air-conditioning contractors | 275 | 3,649 | 13.3 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Business phone service in Oliver Springs
Callata Office costs $99 per month for up to 5 people, and each additional user is $20 a month. That covers up to 3 local numbers, calling from a browser or your cell, transcribed voicemail, recorded calls with AI summaries, after-hours routing and E911 on each number.
Porting a number you already use in Oliver Springs 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.
A 20-person team is the benchmark here, the rounded average establishment size in the Knoxville, TN metro area. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $600.00 a month and Ooma Office Pro $499.00. 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 Oliver Springs, TN?
865. All exchanges NANPA lists for Oliver Springs are in 865.
How many phone companies have exchanges in Oliver Springs?
4, holding 4 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Oliver Springs 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 Oliver Springs?
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).