Get a local business phone number in Sullivan, IN

What area code is Sullivan, IN?

With 4,240 residents in the Census 2024 estimate, Sullivan sits in Sullivan County, Indiana. All 5 exchanges NANPA lists for its rate center are in area code 812. 812 is part of an overlay with 930, so a new local number in Sullivan may carry any of those codes depending on which have numbers available. Sullivan 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 Sullivan

5 carriers hold the 5 exchanges assigned to Sullivan's rate center. Frontier North, INC.. - In 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 Sullivan can come from any of these blocks; once it is yours, porting lets it move between providers.

Local prefixes for Sullivan

These are the central office codes NANPA records for Sullivan. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2002. None were assigned in 2020 or later.

How local numbers work in Sullivan

Phone numbers are tied to a rate center, the local calling area used to decide whether a call is local or toll. Sullivan's numbers are rated to the SULLIVAN rate center in NANPA's records. A business number from one of the prefixes above shows up on customers' phones as a Sullivan number.

Keeping an existing Sullivan number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 812 when you pick it.

Who does business near Sullivan

Sullivan is part of the Terre Haute, IN metro area, home to 169,000 people in 2024. County Business Patterns counted 3,558 business establishments in the Terre Haute, IN metro area in 2023, employing 55,792 people. The largest sectors by establishment count are retail trade (584), health care and social assistance (555), and other services (except public administration) (445).

Business phone service in Sullivan

For $99 a month, Callata puts a team of up to 5 on one plan ($20 for each person after that): up to 3 local numbers, unlimited inbound calls, a pooled allowance of 1,500 outbound US and Canada minutes per user, browser and cell calling, voicemail transcription with urgency triage, recorded calls with AI summaries and business-hours routing, with E911 on every number.

Porting a number you already use in Sullivan 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 the Terre Haute, IN metro area. 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.