Area codes / Tennessee / 729
The 729 area code
729 is an area code in Tennessee, in the Eastern and Central time zones. Get a local 729 number for your business, shared by everyone who answers it, or bring the 729 number you already have.
729 at a glance
Get a 729 business number
When you sign up for Onyx Phone, you pick a local number by area code: search 729, narrow it by the next three digits or the last four if you want something memorable, and it's yours on the spot. Which numbers are free changes daily. If you don't find one you like, 423 covers the same area.
The number rings everyone you assign to it, in the browser, on the iPhone and Android apps, and on desk phones, and texts from it are unlimited once US carriers approve your business. Your plan includes one number for each user, and more numbers are $5 a month.
Calling 729 customers
Local calls in 729 are dialed with all ten digits: the area code, then the number. 729 spans the Eastern and Central time zones, so the local time depends on where the caller is.
Calls from Onyx Phone show your business number, and once your business is verified, your caller ID name too, so 729 customers see who's calling.
Questions about area code 729
What state is area code 729?
Area code 729 is in Tennessee.
What time zone is area code 729 in?
Area code 729 covers places in the Eastern and Central time zones, so check which one a caller is in before you call early or late.
Is 729 an overlay area code?
Yes. 729 shares its area with 423. Numbers in either code ring the same region, and local calls there are dialed with all ten digits.
Can I get a 729 business number?
Onyx Phone sells US local numbers. When you pick your number, search the 729 area code; which numbers are free changes daily. If none are free, 423 covers the same area.
Can I keep the 729 number I already have?
Yes. Moving a number to Onyx Phone is free on every plan and usually takes 3 to 7 business days. You answer on a temporary number until it moves.
Included on every plan
Starter is $17, Business is $29, Scale is $42 per user a month, or less billed yearly. The plan includes a business number for each user and unlimited calling and texting in the US and Canada. Every plan starts with a 7-day free trial, and moving your current number over is free.
Area code data from the North American Numbering Plan Administrator (NANPA), file of October 24, 2026.