Get a local business phone number in Dunlap, TN

Dunlap area codes

Dunlap, in Sequatchie County, Tennessee, had a Census-estimated population of 5,960 in July 2024. All 2 exchanges NANPA lists for its rate center are in area code 423. 423 is part of an overlay with 729, so a new local number in Dunlap may carry any of those codes depending on which have numbers available. Dunlap is in the Eastern and Central time zone.

According to NANPA's dialing-plan data, local calls within 423 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.

Who holds Dunlap phone exchanges

2 carriers hold the 2 exchanges assigned to Dunlap's rate center. Level 3 Communications, LLC - TN 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.

Dunlap phone prefixes

A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Dunlap. The earliest assignment date recorded in the file for these codes is 2023. 1 of the 2 were assigned in 2020 or later.

What makes a number local to Dunlap

What a caller sees as "local" is the area code plus prefix. In Dunlap, those come from the DUNLAP rate center, as recorded by NANPA.

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

The local business market

Dunlap is part of the Chattanooga, TN-GA metro area, home to 588,000 people in 2024. County Business Patterns counted 12,621 business establishments in the Chattanooga, TN-GA metro area in 2023, employing 243,302 people. The largest sectors by establishment count are retail trade (2,004), health care and social assistance (1,504), and other services (except public administration) (1,373).

A Dunlap 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 Dunlap 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 Chattanooga, TN-GA 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.