Area code
813
813 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 813
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.
Digits with or without punctuation work. Numbers outside the US are read with the +country code.
Area code 813 at a glance
NANPA lists 783 central office codes (prefixes) in use in area code 813, held by 45 holders across 8 rate centers.
| Fact | Value |
|---|---|
| In service since | 1953-01-01 |
| Time zone | Eastern (E) |
| Assigned overlays | 656 (2022-02-22) |
| Prefixes in use | 783 |
| Pooled prefixes | 515 (66%) |
| Rate centers | 8 |
| Companies holding prefixes | 45 |
| Assignment dates on file | 2001-01-16 to 2023-12-07 (355 prefixes) |
| ZIP codes in its places | 63 |
Rate centers in area code 813
The largest rate center is TAMPACEN, with 353 prefixes (45%).
| Rate center | Prefixes | Share |
|---|---|---|
| TAMPACEN | 353 | 45% |
| TAMPA | 168 | 21% |
| TAMPAEST | 52 | 7% |
| TAMPANTH | 52 | 7% |
| PLANT CITY | 44 | 6% |
| TAMPAWST | 44 | 6% |
| ZEPHYRHILS | 37 | 5% |
| TAMPASTH | 33 | 4% |
Who holds the prefixes in 813
Frontier Comm Of Florida holds the most prefixes, 233 (30%). 66% of the prefixes are pooled, which means their thousands-blocks can belong to different companies.
| Holder | Prefixes | Share |
|---|---|---|
| Frontier Comm Of Florida | 233 | 30% |
| Aerial Communications | 96 | 12% |
| Verizon Wireless | 73 | 9% |
| Metropcs | 53 | 7% |
| New Cingular Wireless PCS | 47 | 6% |
| MCI Worldcom Communications | 35 | 4% |
| 39 other carriers | 246 | 31% |
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 813
- 1953-01-01 Area code 813 went into service.
- 1995-05-28 Area code 941 went into service and names 813 as its parent.
- 1998-07-01 Area code 727 went into service and names 813 as its parent.
- 2022-02-22 Area code 656 went into service as an overlay in the same area as 813.
Area codes nearest to 813
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 813
63 ZIP codes fall in places that have a rate center in this area code.
| Place | ZIP codes |
|---|---|
| Tampa, FL | 58 |
| Plant City, FL | 5 |
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 813 numbers
4,884 FCC complaints are on file for 3,695 numbers in 813, most often filed as "Unwanted Calls". These are unverified consumer reports.
| Year of latest complaint | Numbers |
|---|---|
| 2023 | 202 |
| 2024 | 177 |
| 2025 | 195 |
Other area codes in Florida
Florida is one state with 23 area codes in the NANPA table. 813 is one of them.
Next to 813 in the numbering table
These are the codes just before and after 813 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 813 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 813 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 813
Where is area code 813?
NANPA assigns area code 813 to Florida, United States.
In which state does area code 813 sit?
Florida. 813 is one of 23 area codes the NANPA table assigns to the state.
Which places does area code 813 cover?
The places with the most ZIP codes among the rate centers in 813 are Tampa, FL and Plant City, FL. The rate center list on this page shows all of them.
Who owns area code 813?
NANPA assigns area codes. Within 813, Frontier Comm Of Florida holds the most prefixes, 233 prefixes or 30%.
Which time zone does 813 use?
The NANPA NPA report lists the time zone for 813 as Eastern (E).
What year did 813 enter service?
The NANPA NPA report gives an in-service date of 1953-01-01, so 813 has been in use since 1953.
Does area code 813 have an overlay?
Yes. 656 (in service 2022-02-22) shares the same area with 813, so numbers from all of them are local to each other.
Which area codes are nearest to 813?
The area codes closest to 813, measured between the centers of the ZIP code places they serve, are 727 (about 18 miles), 941 (about 48 miles), 863 (about 53 miles), 407 (about 78 miles) and 689 (about 78 miles).
How many prefixes does area code 813 have?
NANPA's report dated 2026-10-17 lists 783 prefixes in service in 813, spread over 8 rate centers and 45 holders.
Are there complaints about 813 numbers?
The FCC data on file has 4,884 complaints for 3,695 numbers in 813. 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.