Get a local business phone number in Jonesborough, TN

Jonesborough area codes

Jonesborough, in Washington County, Tennessee, had a Census-estimated population of 6,746 in July 2024. All 4 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 Jonesborough may carry any of those codes depending on which have numbers available. Jonesborough 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.

Phone carriers in Jonesborough

2 carriers hold the 4 exchanges assigned to Jonesborough's rate center. United Telephone-southeast-tn d/b/a Centurylink - TN has the most, with 3. 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.

Exchanges (NPA-NXX) assigned in Jonesborough

Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Jonesborough's rate center (JONESBORO). The earliest assignment date recorded in the file for these codes is 2018. None were assigned in 2020 or later.

How local numbers work in Jonesborough

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

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

The local business market

Jonesborough is part of the Johnson City, TN metro area, home to 215,000 people in 2024. County Business Patterns counted 4,070 business establishments in the Johnson City, TN metro area in 2023, employing 69,452 people. The largest sectors by establishment count are retail trade (717), health care and social assistance (535), and other services (except public administration) (500).

Setting up a Jonesborough 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.

If you already have a number in Jonesborough, 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.

A 17-person team is the benchmark here, the rounded average establishment size in the Johnson City, TN metro area. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $510.00 a month and Ooma Office Pro $424.15. On Callata the same 17 people cost $339.00 a month, less than either per-seat plan.