Area code 729: Tennessee
Area code 729 is a US state area code for Tennessee, on Eastern Time and Central Time. It shares its area with 423, so local numbers there can start with any of them. Local calls there take 10 digits.
Local time in area code 729
America/New_York
America/Chicago
Prefixes in service
No public data
Too new for prefix data
Area code 729 facts
| Location | Tennessee, United States |
|---|---|
| Time zones | Eastern Time and Central Time |
| Overlays | 423 |
| Overlay of | 423 |
| In service since | September 5, 2025 |
| Local calls | 10 digits; toll calls 1 + 10 digits |
| Carrier | Not shown. An area code is where a number was issued; numbers port between carriers. Check line type |
How do I dial a 729 number?
NANPA's dialling plan for 729: local calls inside the code take 10 digits, toll calls 1 + 10 digits. From another area code, dial 1 first. From abroad, use +1. The examples use 555-0147, from a range reserved for fictional numbers.
| Local call inside 729 | 729-555-0147 |
|---|---|
| From another US or Canadian area code | 1-729-555-0147 |
| From outside North America | +1 729 555 0147 |
| E.164, for CRMs and SMS tools | +17295550147 |
When did area code 729 start?
Area code 729 went into service on September 5, 2025 as an overlay of 423. Today 729 and 423 cover the same area as an overlay, which is why 10-digit dialling is needed for local calls there.
Tools for 729 numbers
- Area code lookup
Look up any code or a whole list of numbers, or find the codes for a state or city.
- Area code time zone
Local time for a list of numbers, with a callable-now flag.
- NPA-NXX lookup
Rate center and state for one prefix, a level below the area code.
- TCPA calling hours checker
Whether it's inside the federal 8 a.m. to 9 p.m. calling window there now.
Next step
A 729 number tells you where it was issued, not what it is now.
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Area code 729 questions
- What state is area code 729?
- Area code 729 is in Tennessee, United States.
- What time zone is area code 729 in?
- Eastern Time and Central Time. The code crosses a time zone line, so the local time depends on where in the area the number was issued.
- What area codes overlay 729?
- 423. An overlay adds a new code to the same area instead of splitting it, so neighbours can have different area codes and local calls need 10 digits.
- When did area code 729 start?
- Area code 729 went into service on September 5, 2025 as an overlay of 423.
- Is a 729 number a cell phone or a landline?
- The area code can't tell you. In the US and Canada mobiles, landlines and VoIP lines share area codes and prefixes, and numbers move between carriers and line types. Only a live line-type lookup answers it for one number.
Other area codes in Tennessee
Sources
Location, overlays, in-service date and dialling plan: NANPA NPA database, file dated 10/16/2026. Prefixes and rate centers: NANPA central office code assignments, 10/17/2026. Time zones mapped to the IANA time zone database. By the SimpleVerifier Team; how we build these pages.