Get a local business phone number in Pentwater, MI

What area code is Pentwater, MI?

Pentwater township is a Census town in Oceana County, Michigan, with an estimated 1,660 residents in 2024. All 4 exchanges NANPA lists for its rate center are in area code 231. Pentwater is in the Eastern time zone.

According to NANPA's dialing-plan data, local calls within 231 are dialed as seven digits and toll calls as 1 plus ten digits.

Who holds Pentwater phone exchanges

4 carriers hold the 4 exchanges assigned to Pentwater's rate center. Daystarr LLC d/b/a Daystarr Communications has the most, with 1. 3 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.

Pentwater phone prefixes

Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Pentwater's rate center (PENTWATER). The earliest assignment date recorded in the file for these codes is 2006. 1 of the 4 were assigned in 2020 or later.

When Pentwater's exchanges were assigned

The table groups Pentwater's exchanges by the decade NANPA recorded them as assigned.

How local numbers work in Pentwater

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

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

Who does business near Pentwater

Pentwater is outside any Census metro or micropolitan area, so the figures below are statewide. County Business Patterns counted 229,564 business establishments in Michigan in 2023, employing 4,041,074 people. The largest sectors by establishment count are retail trade (32,868), health care and social assistance (28,979), and other services (except public administration) (23,311).

Setting up a Pentwater business line

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 Pentwater 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.

An 18-person team is the benchmark here, the rounded average establishment size in Michigan. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $540.00 a month and Ooma Office Pro $449.10. Callata comes to $359.00 a month for 18 users ($99 a month with 5 users included, then $20 per additional user), below both.