Get a local business phone number in Dexter, MI

What area code is Dexter, MI?

Dexter township is a Census town in Washtenaw County, Michigan, with an estimated 6,611 residents in 2024. All 16 exchanges NANPA lists for its rate center are in area code 734. 734 is part of an overlay with 679, so a new local number in Dexter may carry any of those codes depending on which have numbers available. Dexter is in the Eastern time zone.

According to NANPA's dialing-plan data, local calls within 734 are dialed as seven digits and toll calls as 1 plus ten digits.

Who holds Dexter phone exchanges

10 carriers hold the 16 exchanges assigned to Dexter's rate center. Level 3 Communications, LLC - Mi has the most, with 3. 15 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.

Dexter phone prefixes

These are the central office codes NANPA records for Dexter. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2005. 1 of the 16 were assigned in 2020 or later.

When Dexter's exchanges were assigned

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

How local numbers work in Dexter

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

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

Who does business near Dexter

Dexter is part of the Ann Arbor, MI metro area, home to 374,000 people in 2024. County Business Patterns counted 8,322 business establishments in the Ann Arbor, MI metro area in 2023, employing 158,858 people. The largest sectors by establishment count are professional, scientific, and technical services (1,301), retail trade (1,065), and health care and social assistance (1,051).

Setting up a Dexter business line

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 Dexter 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 Ann Arbor, MI 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.