Area code 728: Florida
What is area code 728?
Area code 728 is a US state area code for Florida, on Eastern Time. It has 65 prefixes in service across 6 rate centers, the largest being West Palm Beach, Boca Raton and Delray Beach. It shares its area with 561, so local numbers there can start with any of them. Local calls there take 10 digits.
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See the phone add-onArea code 728 facts
| Location | Florida, United States |
|---|---|
| Time zone | Eastern Time |
| Overlays | 561 |
| Overlay of | 561 |
| In service since | March 10, 2023 |
| 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 |
In short: 728 is Florida (Eastern Time). Format checks here are free and run in your browser; the current carrier and line type need a live lookup. Bulk phone number validator · Pro + Phone plan
Local time in area code 728
America/New_York
Prefixes in service
65 of 792 possible
6 rate centers
Which cities and towns use area code 728?
NANPA records each prefix against a rate center, the local billing area a number belongs to, usually named after its main town. These are the 728 rate centers with the most prefixes in service.
| Rate center | Prefixes |
|---|---|
| West Palm Beach | 24 |
| Boca Raton | 14 |
| Delray Beach | 14 |
| Boynton Beach | 5 |
| Belle Glade | 4 |
| Jupiter | 4 |
Source: NANPA central office code assignments, file dated 10/17/2026. Each prefix holds up to 10,000 numbers.
How do I dial a 728 number?
NANPA's dialling plan for 728: 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 728 | 728-555-0147 |
|---|---|
| From another US or Canadian area code | 1-728-555-0147 |
| From outside North America | +1 728 555 0147 |
| E.164, for CRMs and SMS tools | +17285550147 |
When did area code 728 start?
Area code 728 went into service on March 10, 2023 as an overlay of 561. Today 728 and 561 cover the same area as an overlay, which is why 10-digit dialling is needed for local calls there.
Tools for 728 numbers
- Bulk phone number validator
Format, country and number type for every number in a CSV, with E.164 output.
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Look up any code or a whole list of numbers, or find the codes for a state or city.
- Area code time zone
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- 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 728 number tells you where it was issued, not what it is now.
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Area code 728 questions
- What state is area code 728?
- Area code 728 is in Florida, United States. Its largest rate centers by number of prefixes are West Palm Beach, Boca Raton, Delray Beach, Boynton Beach and Belle Glade.
- What time zone is area code 728 in?
- Eastern Time.
- What area codes overlay 728?
- 561. 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 728 start?
- Area code 728 went into service on March 10, 2023 as an overlay of 561.
- Is a 728 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.
- How many phone numbers does area code 728 have?
- 65 of its 792 possible prefixes are in service, and each prefix holds up to 10,000 numbers. That counts prefixes assigned to carriers, not numbers in use.
- Does a valid format mean a 728 number is in service?
- No. A format check only says the digits fit the North American Numbering Plan and that 728 is an assigned code. It cannot tell whether the number is connected, who answers it or which carrier serves it today, because numbers are reassigned and ported. A live carrier lookup reports the current carrier and line type, but even that is not proof someone answers.
- Can I check a list of 728 numbers for free?
- Yes. Paste them in the list tab above or upload a CSV to the bulk phone number validator: format, E.164, country and the numbering-plan line type are free for every row, with no account. Live carrier and line-type lookups come with Pro + Phone at $49.99/mo (5,000 a month).
Other area codes in Florida
All Florida area codes on the area code index.
239305321324352386407448561645656689727754772786813850863904941954
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.