CallataGuidesGet a local business phone number in Plainfield, IN
Plainfield's area codes, prefixes and carriers from NANPA records, and how to put a Plainfield number in front of your customers.
- Area code
- 317 / 463
- Exchanges
- 18NANPA-assigned
- Carriers
- 9
- Population
- 37,796Census 2024 est.
What area code is Plainfield, IN?
With 37,796 residents in the Census 2024 estimate, Plainfield sits in Hendricks County, Indiana. NANPA lists 18 exchanges for its rate center across 2 area codes; 317 has the most (14, 78%). 317 is part of an overlay with 463, so a new local number in Plainfield may carry any of those codes depending on which have numbers available. Plainfield is in the Eastern time zone.
According to NANPA's dialing-plan data, local calls within 317 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.
Phone carriers in Plainfield
9 carriers hold the 18 exchanges assigned to Plainfield's rate center. Indiana Bell Tel CO INC has the most, with 5. 14 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 |
|---|---|---|
| Indiana Bell Tel CO INC | 5 | 28% |
| Paetec Itel, LLC | 3 | 17% |
| Teleport Communications America, LLC - In | 3 | 17% |
| Onvoy, LLC - In | 2 | 11% |
| Level 3 Telecom of Indiana, LP - In | 1 | 5.6% |
| AT&T Enterprises, LLC | 1 | 5.6% |
| Level 3 Communications, LLC - In | 1 | 5.6% |
| Comcast Ip Phone, LLC | 1 | 5.6% |
| Omnipoint Communications Midwest Operations, LLC | 1 | 5.6% |
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.
Local prefixes for Plainfield
A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Plainfield. The earliest assignment date recorded in the file for these codes is 2001. 5 of the 18 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 317 | 203, 204, 268, 272, 279, 303, 406, 561, 707, 742, 754, 837, 838, 839 |
| 463 | 236, 255, 275, 297 |
Source: NANPA utilized central office code file.
When Plainfield's exchanges were assigned
The table groups Plainfield's exchanges by the decade NANPA recorded them as assigned.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 4 | 44% |
| 2020s | 5 | 56% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
How local numbers work in Plainfield
What a caller sees as "local" is the area code plus prefix. In Plainfield, those come from the PLAINFIELD rate center, as recorded by NANPA.
If your business already has a Plainfield number, porting it to Callata is free and keeps it on your cards, listings and vehicles.
Who does business near Plainfield
Plainfield is part of the Indianapolis-Carmel-Greenwood, IN metro area, home to 2.2 million people in 2024. County Business Patterns counted 51,076 business establishments in the Indianapolis, IN metro area in 2023, employing 982,448 people. The largest sectors by establishment count are health care and social assistance (6,448), retail trade (5,880), and professional, scientific, and technical services (5,803).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Limited-service restaurants | 1,779 | 36,961 | 20.8 |
| Full-service restaurants | 1,613 | 40,114 | 24.9 |
| Offices of real estate agents and brokers | 1,308 | 3,371 | 2.6 |
| Physician practices | 1,136 | 25,332 | 22.3 |
| Insurance agencies and brokerages | 994 | 7,073 | 7.1 |
| Law offices | 877 | 6,169 | 7.0 |
| Residential remodelers | 831 | 3,115 | 3.7 |
| Dental offices | 824 | 7,446 | 9.0 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Business phone service in Plainfield
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 Plainfield 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.
The comparison below uses 19 users, the rounded average establishment size in the Indianapolis, IN metro area. At list prices checked September 28, 2026, that is $474.05 a month on Ooma Office Pro and $570.00 on RingCentral RingEX Core. Callata comes to $379.00 a month for 19 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 | $379.00 | $4,548.00 |
| Quo (Starter) | $19.00 per user | $361.00 | $4,332.00 |
| Nextiva (Core) | $23.00 per user | $437.00 | $5,244.00 |
| Ooma (Office Pro) | $24.95 per user | $474.05 | $5,688.60 |
| Dialpad (Standard) | $27.00 per user | $513.00 | $6,156.00 |
| RingCentral (RingEX Core) | $30.00 per user | $570.00 | $6,840.00 |
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 Plainfield, IN?
Plainfield has exchanges in 317 and 463; 317 has the most.
How many phone companies have exchanges in Plainfield?
9, holding 18 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Plainfield 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 Plainfield?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 19 users come to $379.00 a month. For comparison, 19 users on RingCentral RingEX Core list at $570.00 a month (checked September 28, 2026).