Get a local business phone number in Justin, TX

What area code is Justin, TX?

Justin city is a Census place in Denton County, Texas, with an estimated 6,197 residents in 2024. All 9 exchanges NANPA lists for its rate center are in area code 940. Justin is in the Central time zone.

According to NANPA's dialing-plan data, local calls within 940 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.

Phone carriers in Justin

4 carriers hold the 9 exchanges assigned to Justin's rate center. Frontier Southwest INC d/b/a Frontier Comm of Texas has the most, with 3. 7 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Justin can come from any of these blocks; once it is yours, porting lets it move between providers.

Local prefixes for Justin

Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Justin's rate center (JUSTIN). The earliest assignment date recorded in the file for these codes is 2018. 2 of the 9 were assigned in 2020 or later.

When Justin's exchanges were assigned

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

Rate centers and local calling in Justin

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

Keeping an existing Justin number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 940 when you pick it.

Businesses around Justin

Justin is part of the Dallas-Fort Worth-Arlington, TX metro area, home to 8.3 million people in 2024. County Business Patterns counted 189,739 business establishments in the Dallas, TX metro area in 2023, employing 3,594,749 people. The largest sectors by establishment count are professional, scientific, and technical services (27,552), health care and social assistance (23,741), and retail trade (21,680).

Setting up a Justin 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 Justin 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.

Per-seat phone plans multiply by headcount. For the rounded average establishment size in the Dallas, TX metro area, 19 users on RingCentral RingEX Core come to $570.00 a month and on Ooma Office Pro $474.05, at month-to-month list prices checked September 28, 2026. Callata comes to $379.00 a month for 19 users ($99 a month with 5 users included, then $20 per additional user), below both.