Get a local business phone number in Ennis, MT

Ennis area codes

Ennis, in Madison County, Montana, had a Census-estimated population of 1,081 in July 2024. All 2 exchanges NANPA lists for its rate center are in area code 406. Ennis is in the Mountain time zone.

According to NANPA's dialing-plan data, local calls within 406 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.

Phone carriers in Ennis

2 carriers hold the 2 exchanges assigned to Ennis's rate center. 3 Rivers Tel. Coop., INC. has the most, with 1. 2 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.

Exchanges (NPA-NXX) assigned in Ennis

Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Ennis's rate center (ENNIS). The earliest assignment date recorded in the file for these codes is 2017. None were assigned in 2020 or later.

How local numbers work in Ennis

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

If your business already has a Ennis number, porting it to Callata is free and keeps it on your cards, listings and vehicles.

The local business market

Ennis is outside any Census metro or micropolitan area, so the figures below are statewide. County Business Patterns counted 42,566 business establishments in Montana in 2023, employing 409,312 people. The largest sectors by establishment count are construction (6,766), retail trade (4,706), and health care and social assistance (4,488).

Setting up a Ennis business line

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 Ennis, 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 Montana, 10 users on RingCentral RingEX Core come to $300.00 a month and on Ooma Office Pro $249.50, at month-to-month list prices checked September 28, 2026. On Callata the same 10 people cost $199.00 a month, less than either per-seat plan.