CallataGuidesGet a local business phone number in Flat Rock, IN
Flat Rock's area codes, prefixes and carriers from NANPA records, and how to put a Flat Rock number in front of your customers.
- Area code
- 812 / 930
- Exchanges
- 4NANPA-assigned
- Carriers
- 3
- Population
- 1,625Census 2024 est.
Area codes in Flat Rock
Flat Rock, in Bartholomew County, Indiana, had a Census-estimated population of 1,625 in July 2024. NANPA lists 4 exchanges for its rate center across 2 area codes; 812 has the most (3, 75%). 812 is part of an overlay with 930, so a new local number in Flat Rock may carry any of those codes depending on which have numbers available. Flat Rock is in the Eastern and Central time zone.
According to NANPA's dialing-plan data, local calls within 812 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.
Phone carriers in Flat Rock
3 carriers hold the 4 exchanges assigned to Flat Rock's rate center. Omnipoint Communications Midwest Operations, LLC 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 |
|---|---|---|
| Omnipoint Communications Midwest Operations, LLC | 2 | 50% |
| Level 3 Communications, LLC - In | 1 | 25% |
| Indiana Bell Tel CO INC | 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 Flat Rock
Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Flat Rock's rate center (FLAT ROCK). The earliest assignment date recorded in the file for these codes is 2001. 1 of the 4 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 812 | 302, 581, 587 |
| 930 | 253 |
Source: NANPA utilized central office code file.
When Flat Rock's exchanges were assigned
Assignment dates show when each block of Flat Rock numbers was added to the local supply.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 1 | 50% |
| 2020s | 1 | 50% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
How local numbers work in Flat Rock
NANPA ties every exchange to a rate center. For Flat Rock that is FLAT ROCK, so a number from one of these exchanges reads as local to people in and around Flat Rock.
If your business already has a Flat Rock number, porting it to Callata is free and keeps it on your cards, listings and vehicles.
The local business market
Flat Rock is part of the Columbus, IN metro area, home to 84,741 people in 2024. County Business Patterns counted 1,950 business establishments in the Columbus, IN metro area in 2023, employing 47,016 people. The largest sectors by establishment count are retail trade (286), health care and social assistance (266), and other services (except public administration) (185).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Limited-service restaurants | 70 | 1,678 | 24.0 |
| Physician practices | 58 | 859 | 14.8 |
| Full-service restaurants | 56 | 1,496 | 26.7 |
| Insurance agencies and brokerages | 38 | 158 | 4.2 |
| Residential remodelers | 36 | 132 | 3.7 |
| Dental offices | 34 | 311 | 9.1 |
| Plumbing, heating and air-conditioning contractors | 28 | 162 | 5.8 |
| Landscaping services | 26 | 107 | 4.1 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Business phone service in Flat Rock
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.
If you already have a number in Flat Rock, porting it to Callata is free. Texting from a local number requires a one-time carrier registration (10DLC, $49), and the numbers available in any area code depend on carrier inventory when you choose them.
Optional AI agents (receptionist, sales, support or scheduler) can answer calls after hours or when nobody picks up, take messages, text, email and transfer to your team. They are billed from prepaid AI minutes at $0.25 per minute, identify themselves as AI, and may only place outbound calls to people who consented, between 8am and 9pm.
Per-seat phone plans multiply by headcount. For the rounded average establishment size in the Columbus, IN metro area, 24 users on RingCentral RingEX Core come to $720.00 a month and on Ooma Office Pro $598.80, at month-to-month list prices checked September 28, 2026. On Callata the same 24 people cost $479.00 a month, less than either per-seat plan.
| Provider (plan) | Pricing basis | Per month | Per year |
|---|---|---|---|
| Callata (Callata Office) | $99 incl. 5 users, $20 per extra user | $479.00 | $5,748.00 |
| Quo (Starter) | $19.00 per user | $456.00 | $5,472.00 |
| Nextiva (Core) | $23.00 per user | $552.00 | $6,624.00 |
| Ooma (Office Pro) | $24.95 per user | $598.80 | $7,185.60 |
| Dialpad (Standard) | $27.00 per user | $648.00 | $7,776.00 |
| RingCentral (RingEX Core) | $30.00 per user | $720.00 | $8,640.00 |
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 Flat Rock, IN?
Flat Rock has exchanges in 812 and 930; 812 has the most.
How many phone companies have exchanges in Flat Rock?
3, holding 4 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Flat Rock 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 Flat Rock?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 24 users come to $479.00 a month. For comparison, 24 users on RingCentral RingEX Core list at $720.00 a month (checked September 28, 2026).