Area code
336
336 is a United States area code. Under the North American Numbering Plan it belongs to North Carolina, which has 10 area codes in total.
Validate a number in 336
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 336 at a glance
NANPA lists 782 central office codes (prefixes) in use in area code 336, held by 47 holders across 88 rate centers.
| Fact | Value |
|---|---|
| In service since | 1997-12-15 |
| Time zone | Eastern (E) |
| Assigned overlays | 743 (2016-05-23) |
| Prefixes in use | 782 |
| Pooled prefixes | 535 (68%) |
| Rate centers | 88 |
| Companies holding prefixes | 47 |
| Assignment dates on file | 2001-01-17 to 2024-03-11 (225 prefixes) |
| ZIP codes in its places | 92 |
Rate centers in area code 336
| Rate center | Prefixes | Share |
|---|---|---|
| GREENSBORO | 188 | 24% |
| WINSTN SAL | 145 | 19% |
| HIGH POINT | 53 | 7% |
| BURLINGTON | 51 | 7% |
| ASHEBORO | 29 | 4% |
| LEXINGTON | 29 | 4% |
| REIDSVILLE | 20 | 3% |
| NOWILKESBO | 13 | 2% |
| 80 other rate centers | 254 | 32% |
Who holds the prefixes in 336
Southern Bell Tel & Tel holds the most prefixes, 163 (21%). 68% of the prefixes are pooled, which means their thousands-blocks can belong to different companies.
| Holder | Prefixes | Share |
|---|---|---|
| Southern Bell Tel & Tel | 163 | 21% |
| Verizon Wireless | 90 | 12% |
| T-Mobile USA | 63 | 8% |
| Brightspeed Of North Carolina | 58 | 7% |
| New Cingular Wireless PCS | 46 | 6% |
| Paetec Itel | 43 | 5% |
| 41 other carriers | 319 | 41% |
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 336
- 1993-11-14 Area code 910, named as the parent of 336 in the NANPA report, was in service.
- 1997-12-15 Area code 336 went into service.
- 2016-05-23 Area code 743 went into service as an overlay in the same area as 336.
Area codes nearest to 336
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 336
92 ZIP codes fall in places that have a rate center in this area code.
| Place | ZIP codes |
|---|---|
| Greensboro, NC | 28 |
| High Point, NC | 7 |
| Lexington, NC | 4 |
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 336 numbers
2,879 FCC complaints are on file for 2,388 numbers in 336, most often filed as "Unwanted Calls". These are unverified consumer reports.
| Year of latest complaint | Numbers |
|---|---|
| 2023 | 172 |
| 2024 | 140 |
| 2025 | 142 |
Other area codes in North Carolina
North Carolina is one state with 10 area codes in the NANPA table. 336 is one of them.
Next to 336 in the numbering table
These are the codes just before and after 336 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 336 was first assigned in North Carolina. 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 North Carolina next to a 336 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 336
Where is area code 336?
NANPA assigns area code 336 to North Carolina, United States.
In which state does area code 336 sit?
North Carolina. 336 is one of 10 area codes the NANPA table assigns to the state.
Which places does area code 336 cover?
The places with the most ZIP codes among the rate centers in 336 are Greensboro, NC, High Point, NC and Lexington, NC. The rate center list on this page shows all of them.
Who owns area code 336?
NANPA assigns area codes. Within 336, Southern Bell Tel & Tel holds the most prefixes, 163 prefixes or 21%.
Which time zone does 336 use?
The NANPA NPA report lists the time zone for 336 as Eastern (E).
What year did 336 enter service?
The NANPA NPA report gives an in-service date of 1997-12-15, so 336 has been in use since 1997.
Does area code 336 have an overlay?
Yes. 743 (in service 2016-05-23) shares the same area with 336, so numbers from all of them are local to each other.
Which area codes are nearest to 336?
The area codes closest to 336, measured between the centers of the ZIP code places they serve, are 704 (about 72 miles), 980 (about 72 miles), 919 (about 79 miles), 984 (about 79 miles) and 276 (about 105 miles).
How many prefixes does area code 336 have?
NANPA's report dated 2026-10-17 lists 782 prefixes in service in 336, spread over 88 rate centers and 47 holders.
Are there complaints about 336 numbers?
The FCC data on file has 2,879 complaints for 2,388 numbers in 336. 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.