336 Area Code: Greensboro, North Carolina
Area code 336 serves Greensboro, Winston-Salem and High Point, North Carolina in the Eastern time zone, in service since 1997. Consumers have filed 5,004 unwanted-call complaints against 4,349 different 336 numbers, 639 of them with the FTC in the last 30 days. Look up the exact number that called you below.
Area code 336 at a glance
- State
- North Carolina
- Main cities
- Greensboro, Winston-Salem, High Point, Burlington, Lexington, Asheboro + 81 more
- Counties
- Guilford County, Forsyth County, Alamance County, Surry County + 12 more
- Local time
- —Eastern
- In service since
- December 15, 1997
- Split from
- 910
- Overlay code
- 743 (2016)
- Local dialing
- 10 digits (area code + number)
- Exchanges
- 88 rate centers, 783 prefixes
Sources: NANPA area code and central office code records (refreshed weekly); cities and counties matched from US Census Bureau and USGS place names.
Most-reported 336 numbers
Ranked by FTC Do Not Call complaints this month, then all-time FTC and FCC complaints. Only numbers with enough complaints for a full report page are listed. Click one for what it was reported for and where.
What calls from 336 numbers are about
2,122 FTC Do Not Call complaints about 336 numbers since Jul 24. The most common named subject is medical & prescriptions, at 14% of complaints (68% of those were recorded messages). Overall, 59% of callers who answered said the call was a robocall.
FTC complaint subjects
- Other / unspecified1,06250%
- Medical & prescriptions28814%
- Impostor (government, business, family)1869%
- No subject given1688%
- Debt reduction1597%
- Dropped call / no message1226%
- Warranties & protection plans412%
FCC complaints by call type, last 2 years
- Live Voice11347%
- Prerecorded Voice10644%
- Text Message2410%
10% of recent FCC complaints about 336 numbers are about text messages, not calls.
When 336 spam calls come in
32% of complaints that give a call time describe calls between 10am and 1pm. 95% came Monday to Friday, most on Tuesdays, the pattern of call-center robocall campaigns that run on business hours. Times are as consumers reported them to the FTC.
By hour of the day
By day of the week
Is it getting worse?
633 FTC complaints about 336 numbers in the last four weeks, down 9% on the four weeks before. FCC complaints about 336 numbers peaked in 2018 (458); the FTC's daily Do Not Call data has carried most of the volume since mid-2026.
FTC complaints per week
FCC complaints per year
Years shown as '15 to '26; the current year is partial.
Who gets these calls
72% of the FTC complaints about 336 numbers came from people whose own phone number also starts with 336, and 84% from North Carolina. Calls that look local to the person receiving them are the signature of neighbor spoofing: robocallers display a number from your own area code because you're more likely to answer.
Where complainants live
- North Carolina1,77784%
- California442%
- Florida332%
- New York221%
- Texas211%
What people with 336 numbers report
People whose own number starts with 336 filed 3,474 FTC complaints since Jul 24. 44% were about calls showing another 336 number. The most common named subject was debt-relief pitches.
Area codes on the calls they reported
- 336 (same code)1,52444%
- 833 (toll-free)1203%
- 877 (toll-free)1063%
- 980963%
- 855 (toll-free)893%
Likely campaigns using 336 numbers
Groups of numbers that drew the same FTC complaint in the same pattern over the last 60 days. The grouping is statistical and doesn't identify who is calling.
Busiest 336 prefixes this month
FTC complaints in the last 30 days, grouped by the first six digits. When one prefix collects complaints about many different numbers, a campaign is usually cycling through that block. The carrier is who NANPA assigned the prefix to, not who made the calls.
| Prefix | Complaints | Numbers | Carrier | Exchange |
|---|---|---|---|---|
| (336) 957-xxxxcampaign | 21 | 20 | Wilkes Tel. Membership CORP. | Lomax |
| (336) 732-xxxx | 17 | 17 | BellSouth (AT&T) | Winston-Salem |
| (336) 396-xxxx | 12 | 12 | Onvoy (Sinch) | Ruffin |
| (336) 666-xxxx | 11 | 11 | Peerless Network | Winston-Salem |
| (336) 729-xxxx | 11 | 10 | Onvoy (Sinch) | Randleman |
Carriers operating in 336
NANPA has assigned 783 336 prefixes (NPA-NXX central-office codes) across 88 rate centers: 29% to wireless carriers, 65% to landline and VoIP operators; 68% are pooled blocks shared by several carriers. 1 prefix was assigned in the last 12 months (newest 2026-05-29). The carrier holding a prefix is who the number was issued through. It says nothing about who is calling, since caller ID is routinely spoofed.
| Carrier | Type | Prefixes | Rate centers | Newest assignment |
|---|---|---|---|---|
| BellSouth (AT&T) | Incumbent landline (ILEC) | 163(21%) | 11 | 2012-10-19 |
| Verizon Wireless (Cellco Partnership) | Wireless | 90(11%) | 12 | 2019-05-07 |
| T-Mobile USA | Wireless | 63(8%) | 12 | 2015-11-11 |
| Brightspeed of North Carolina, LLC | Incumbent landline (ILEC) | 58(7%) | 28 | 2010-03-30 |
| AT&T Mobility (New Cingular Wireless PCS) | Wireless | 46(6%) | 12 | 2019-01-25 |
| PAETEC (Windstream) | Competitive / VoIP (CLEC) | 43(5%) | 13 | 2011-12-19 |
| North State Telephone CO. dba North State Comm | Incumbent landline (ILEC) | 32(4%) | 3 | 2010-06-18 |
| Onvoy (Sinch) | Competitive / VoIP (CLEC) | 26(3%) | 14 | 2026-05-29 |
| Level 3 (Lumen) | Competitive / VoIP (CLEC) | 24(3%) | 17 | 2018-11-21 |
| Twc Ip Enabled Services, LLC | Competitive / VoIP (CLEC) | 23(3%) | 23 | 2016-02-12 |
| Bandwidth.com | Competitive / VoIP (CLEC) | 15(2%) | 12 | 2020-05-12 |
| Windstream | Incumbent landline (ILEC) | 15(2%) | 3 | 2014-08-28 |
Largest rate centers (exchanges) by prefixes: Greensboro (188), Winston-Salem (145), High Point (53), Burlington (51), Asheboro (29), Lexington (29), Reidsville (20), North Wilkesboro (14), Roxboro (13), Elkin (11). Source: NANPA Central Office Code Utilized Assignments (public, refreshed weekly).
What to do about calls from 336 numbers
Before you call back
- Medical & prescriptions is the top named complaint here. Don't confirm your Medicare or insurance number to a caller. Medicare won't cold-call you to sell braces, test kits or plans. Read about Medicare scam calls.
- Look up the full number above. A missed call from 336 with no voicemail is usually a robocall; anyone who needs you will leave a message.
- If it looks like a neighbor's number, it may be spoofed. See calls from your own area code.
- Block repeat callers: iPhone, Android, or your carrier's free filter (Verizon, AT&T, T-Mobile).
Report it in North Carolina
- Unwanted sales calls and robocalls: donotcall.gov (FTC). Scams and fraud: ReportFraud.ftc.gov.
- Spoofing, texts and call-blocking problems: FCC consumer complaints.
- State complaints: North Carolina Department of Justice.
- North Carolina formally adopted the FTC's National Do Not Call Registry as its own state list rather than running a separate one, so a single free registration at donotcall.gov covers you. State authorities can still enforce against telemarketers who ignore it, in addition to any federal penalty.
Your FTC and FCC reports are published (without your name or number) in the datasets this page is built from. How to report unwanted calls.
Area code 336: questions answered from the data
Where is area code 336?
Area code 336 serves Greensboro, Winston-Salem and High Point, North Carolina, covering Guilford County, Forsyth County and Alamance County and 13 more counties. It has been in service since December 15, 1997. It was split from area code 910.
What time zone is area code 336 in?
Area code 336 is in the Eastern time zone (UTC−5, or UTC−4 during daylight saving time). The current local time is shown at the top of this page.
Which area codes overlay 336?
743 (in service 2016) serves the same area as 336. New numbers there can be issued with any of these codes, and local calls need all 10 digits. A spoofed call can display any of them.
What are calls from 336 numbers usually about?
Since Jul 24, consumers filed 2,122 FTC Do Not Call complaints about 336 numbers. The most common named subject was medical & prescriptions: 14% of complaints, 68% of them recorded messages. Across all subjects, 59% of callers who answered the question said the call was a robocall.
When do 336 spam calls happen?
32% of the complaints that give a call time describe calls between 10am and 1pm, and 95% came on weekdays, most often on Tuesday. Times are as consumers reported them.
Are calls from 336 numbers really local?
Not necessarily. 72% of the FTC complaints about 336 numbers came from people whose own phone number also starts with 336, and 84% from North Carolina. Calls that look local to the person receiving them are the signature of neighbor spoofing: robocallers display a number from your own area code because you're more likely to answer.
Are 336 robocalls increasing?
In the four weeks to Oct 20, consumers filed 633 FTC complaints about 336 numbers, 9% fewer than the four weeks before.
How do I report a 336 scam call in North Carolina?
Report unwanted sales calls and robocalls to the FTC at donotcall.gov, and scams to ReportFraud.ftc.gov. The FCC takes complaints at consumercomplaints.fcc.gov. In North Carolina, the North Carolina Department of Justice also handles consumer complaints about scam calls. Reports feed the public data this page is built from.
Overlay and nearby area codes
Sources: FTC Do Not Call complaints (unverified consumer reports), published every weekday and available here from Jul 24; FCC Consumer Complaint Data, public record, imported nightly; NANPA numbering records. A number appearing here means consumers reported calls that displayed it. Caller ID can be spoofed.