CallataGuidesGet a local business phone number in Oak Grove, LA
Oak Grove's area code, prefixes and carriers from NANPA records, and how to put a Oak Grove number in front of your customers.
- Area code
- 318
- Exchanges
- 4NANPA-assigned
- Carriers
- 3
- Population
- 1,350Census 2024 est.
What area code is Oak Grove, LA?
Oak Grove town is a Census place in West Carroll Parish, Louisiana, with an estimated 1,350 residents in 2024. All 4 exchanges NANPA lists for its rate center are in area code 318. 318 is part of an overlay with 457, so a new local number in Oak Grove may carry any of those codes depending on which have numbers available. Oak Grove is in the Central time zone.
According to NANPA's dialing-plan data, local calls within 318 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 |
|---|---|---|---|---|---|
| 318 | 4 | 100% | 1957 | 457 | Central |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Who holds Oak Grove phone exchanges
3 carriers hold the 4 exchanges assigned to Oak Grove's rate center. Onvoy, LLC - La has the most, with 2. 4 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. Holding a code means NANPA assigned that block of numbers to the carrier for this rate center; individual numbers may since have been ported elsewhere.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Onvoy, LLC - La | 2 | 50% |
| Bellsouth Telecomm INC d/b/a South Central Bell Tel | 1 | 25% |
| Level 3 Communications, LLC - La | 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.
Oak Grove phone prefixes
Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Oak Grove's rate center (OAK GROVE). The earliest assignment date recorded in the file for these codes is 2002. 1 of the 4 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 318 | 428, 490, 714, 897 |
Source: NANPA utilized central office code file.
When Oak Grove's exchanges were assigned
The table groups Oak Grove'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 Oak Grove
What a caller sees as "local" is the area code plus prefix. In Oak Grove, those come from the OAK GROVE rate center, as recorded by NANPA.
New local numbers are drawn from carrier inventory, so the exact 318 numbers available change over time; porting an existing number is free.
Who does business near Oak Grove
Oak Grove is outside any Census metro or micropolitan area, so the figures below are statewide. County Business Patterns counted 108,561 business establishments in Louisiana in 2023, employing 1,697,330 people. The largest sectors by establishment count are retail trade (15,868), health care and social assistance (13,331), and professional, scientific, and technical services (12,493).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Limited-service restaurants | 3,759 | 71,389 | 19.0 |
| Law offices | 3,217 | 17,533 | 5.5 |
| Full-service restaurants | 3,085 | 71,744 | 23.3 |
| Physician practices | 2,994 | 36,426 | 12.2 |
| Insurance agencies and brokerages | 2,136 | 11,634 | 5.4 |
| Plumbing, heating and air-conditioning contractors | 1,623 | 14,032 | 8.6 |
| Dental offices | 1,575 | 12,232 | 7.8 |
| Offices of real estate agents and brokers | 1,156 | 2,269 | 2.0 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Setting up a Oak Grove business line
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 Oak Grove 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 16-person team is the benchmark here, the rounded average establishment size in Louisiana. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $480.00 a month and Ooma Office Pro $399.20. Callata comes to $319.00 a month for 16 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 | $319.00 | $3,828.00 |
| Quo (Starter) | $19.00 per user | $304.00 | $3,648.00 |
| Nextiva (Core) | $23.00 per user | $368.00 | $4,416.00 |
| Ooma (Office Pro) | $24.95 per user | $399.20 | $4,790.40 |
| Dialpad (Standard) | $27.00 per user | $432.00 | $5,184.00 |
| RingCentral (RingEX Core) | $30.00 per user | $480.00 | $5,760.00 |
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 Oak Grove, LA?
318. All exchanges NANPA lists for Oak Grove are in 318.
How many phone companies have exchanges in Oak Grove?
3, holding 4 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Oak Grove 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 Oak Grove?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 16 users come to $319.00 a month. For comparison, 16 users on RingCentral RingEX Core list at $480.00 a month (checked September 28, 2026).