CallataGuidesGet a local business phone number in Guilford, IN
Guilford's area codes, prefixes and carriers from NANPA records, and how to put a Guilford number in front of your customers.
- Area code
- 812 / 930
- Exchanges
- 2NANPA-assigned
- Carriers
- 2
- Population
- 36,488Census 2024 est.
Guilford area codes
Guilford, in Hendricks County, Indiana, had a Census-estimated population of 36,488 in July 2024. NANPA lists 2 exchanges for its rate center across 2 area codes; 812 has the most (1, 50%). 812 is part of an overlay with 930, so a new local number in Guilford may carry any of those codes depending on which have numbers available. Guilford 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.
Who holds Guilford phone exchanges
2 carriers hold the 2 exchanges assigned to Guilford's rate center. Brightspeed of Indiana, LLC has the most, with 1. 2 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 |
|---|---|---|
| Brightspeed of Indiana, LLC | 1 | 50% |
| Onvoy, LLC - In | 1 | 50% |
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.
Guilford phone prefixes
A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Guilford. The earliest assignment date recorded in the file for these codes is 2020. 1 of the 2 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 812 | 487 |
| 930 | 230 |
Source: NANPA utilized central office code file.
What makes a number local to Guilford
What a caller sees as "local" is the area code plus prefix. In Guilford, those come from the GUILFORD rate center, as recorded by NANPA.
If your business already has a Guilford number, porting it to Callata is free and keeps it on your cards, listings and vehicles.
The local business market
Guilford 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.
A Guilford number on Callata
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 Guilford 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 Guilford, IN?
Guilford has exchanges in 812 and 930; 812 has the most.
How many phone companies have exchanges in Guilford?
2, holding 2 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Guilford 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 Guilford?
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).