Area code
728
728 is a United States area code. Under the North American Numbering Plan it belongs to Florida, which has 23 area codes in total.
Validate a number in 728
Paste a full number and the tool checks it against the numbering plan. It returns the standard formats, the line type the plan assigns and the area code region.
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Area code 728 at a glance
NANPA lists 65 central office codes (prefixes) in use in area code 728, held by 15 holders across 6 rate centers.
| Fact | Value |
|---|---|
| In service since | 2023-03-10 |
| Time zone | Eastern (E) |
| Assigned overlays | 561 (1996-05-13) |
| Prefixes in use | 65 |
| Pooled prefixes | 63 (97%) |
| Rate centers | 6 |
| Companies holding prefixes | 15 |
| Assignment dates on file | 2023-10-20 to 2026-06-30 (65 prefixes) |
| ZIP codes in its places | 22 |
Rate centers in area code 728
| Rate center | Prefixes | Share |
|---|---|---|
| WPALMBEACH | 24 | 37% |
| BOCA RATON | 14 | 22% |
| DELRAY BCH | 14 | 22% |
| BOYNTONBCH | 5 | 8% |
| BELLEGLADE | 4 | 6% |
| JUPITER | 4 | 6% |
Who holds the prefixes in 728
Onvoy holds the most prefixes, 12 (18%). 97% of the prefixes are pooled, which means their thousands-blocks can belong to different companies.
| Holder | Prefixes | Share |
|---|---|---|
| Onvoy | 12 | 18% |
| Verizon Wireless | 12 | 18% |
| New Cingular Wireless PCS | 8 | 12% |
| Omnipoint Miami E License | 8 | 12% |
| Wide Voice | 8 | 12% |
| Livewire Telecom | 4 | 6% |
| 9 other carriers | 13 | 20% |
A prefix holder is the company a code was assigned to, not necessarily a number's current carrier, because numbers can be ported to another company. Find which carrier a number is on, or browse the prefix holders.
History of area code 728
- 1996-05-13 Area code 561, named as the parent of 728 in the NANPA report, was in service.
- 2023-03-10 Area code 728 went into service.
Area codes nearest to 728
Distance is measured between the centers of the ZIP code places each area code serves, so it is a rough guide.
Overlay codes in the same area
ZIP codes in area code 728
22 ZIP codes fall in places that have a rate center in this area code.
| Place | ZIP codes |
|---|---|
| Boca Raton, FL | 16 |
| Jupiter, FL | 5 |
| Belle Glade, FL | 1 |
A ZIP code and an area code are unrelated systems. A ZIP code can sit in more than one area code, and an area code spans many ZIP codes.
Complaints on file for 728 numbers
551 FCC complaints are on file for 175 numbers in 728, most often filed as "Prerecorded Voice". These are unverified consumer reports.
| Year of latest complaint | Numbers |
|---|---|
| 2023 | 0 |
| 2024 | 8 |
| 2025 | 15 |
Other area codes in Florida
Florida is one state with 23 area codes in the NANPA table. 728 is one of them.
Next to 728 in the numbering table
These are the codes just before and after 728 when all are sorted by number. They are neighbours on the list, not necessarily on the map.
What the area code does and does not tell you
A number that starts with 728 was first assigned in Florida. That is a fact about where the number began, and it is a useful hint when you check a form entry, for example a billing address in Florida next to a 728 phone number.
It does not show where the person is today. A number stays with its owner after a move or a change of provider (number portability), and mobile numbers travel with the handset. The area code also cannot tell you whether the line is active, who the carrier is, or whether the number is mobile or fixed: the plan shares those ranges. Read more about the area code, the numbering plan and line type.
Check numbers in bulk with the API
| Product | Credits | Docs |
|---|---|---|
| Phone Numbering-Plan Validation | 1 credit per valid number | API docs |
| Phone Intelligence (carrier and line status) | 1 credit per check (invalid numbers outside the US and Canada are free) | Product page |
Questions about area code 728
Where is area code 728?
NANPA assigns area code 728 to Florida, United States.
In which state does area code 728 sit?
Florida. 728 is one of 23 area codes the NANPA table assigns to the state.
Which places does area code 728 cover?
The places with the most ZIP codes among the rate centers in 728 are Boca Raton, FL, Jupiter, FL and Belle Glade, FL. The rate center list on this page shows all of them.
Who owns area code 728?
NANPA assigns area codes. Within 728, Onvoy holds the most prefixes, 12 prefixes or 18%.
Which time zone does 728 use?
The NANPA NPA report lists the time zone for 728 as Eastern (E).
What year did 728 enter service?
The NANPA NPA report gives an in-service date of 2023-03-10, so 728 has been in use since 2023.
Does area code 728 have an overlay?
Yes. 561 (in service 1996-05-13) shares the same area with 728, so numbers from all of them are local to each other.
Which area codes are nearest to 728?
The area codes closest to 728, measured between the centers of the ZIP code places they serve, are 754 (about 35 miles), 954 (about 35 miles), 305 (about 54 miles), 645 (about 54 miles) and 786 (about 54 miles).
How many prefixes does area code 728 have?
NANPA's report dated 2026-10-17 lists 65 prefixes in service in 728, spread over 6 rate centers and 15 holders.
Are there complaints about 728 numbers?
The FCC data on file has 551 complaints for 175 numbers in 728. They are unverified consumer reports. A number with no complaints on file is not proven safe.
Area code assignments: North American Numbering Plan Administrator NPA report, file dated 10/17/2026, retrieved 2026-10-17. Source file. New codes are assigned several times a year. Prefixes, rate centers, holders, time zone, in-service date and overlays: NANPA central office code report dated 2026-10-17 and NPA report dated 2026-10-18. Complaints: FCC consumer complaints open data, fetched 2026-10-17. ZIP code places: Postal code places and coordinates: GeoNames (geonames.org), licensed CC BY 4.0.