363 Area Code: Nassau County, New York
Area code 363 serves Nassau County, Cold Spring Harbor and Farmingdale, New York in the Eastern time zone, in service since 2023. Consumers have filed 95 unwanted-call complaints against 74 different 363 numbers, 25 of them with the FTC in the last 30 days. Look up the exact number that called you below.
Area code 363 at a glance
- State
- New York
- Main cities
- Nassau County, Cold Spring Harbor, Farmingdale
- Counties
- Nassau County, Suffolk County
- Local time
- —Eastern
- In service since
- January 20, 2023
- Overlay of
- 516
- Local dialing
- 10 digits (area code + number)
- Exchanges
- 11 rate centers, 38 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 363 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 363 numbers are about
73 FTC Do Not Call complaints about 363 numbers since Jul 24. The most common named subject is lotteries, prizes & sweepstakes, at 42% of complaints (61% of those were recorded messages). Overall, 60% of callers who answered said the call was a robocall.
FTC complaint subjects
- Lotteries, prizes & sweepstakes3142%
- Other / unspecified2534%
- Dropped call / no message68%
- Impostor (government, business, family)45%
- No subject given34%
- Energy, solar & utilities11%
- Home improvement & cleaning11%
FCC complaints by call type, last 2 years
- Live Voice880%
- Prerecorded Voice220%
Live-voice calls are from a person; prerecorded calls are robocalls.
When 363 spam calls come in
34% of complaints that give a call time describe calls between 10am and 1pm. 90% 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?
25 FTC complaints about 363 numbers in the last four weeks, up 19% on the four weeks before. FCC complaints about 363 numbers peaked in 2026 (6); 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
Only 27% of the FTC complaints about 363 numbers came from New York residents; the most came from Massachusetts, New Jersey and Washington. 363 numbers are being used for nationwide campaigns, so the area code says little about where the caller is.
Where complainants live
- New York2027%
- Massachusetts57%
- New Jersey57%
- Washington45%
- Texas45%
Carriers operating in 363
NANPA has assigned 38 363 prefixes (NPA-NXX central-office codes) across 11 rate centers: 29% to wireless carriers, 68% to landline and VoIP operators; 97% are pooled blocks shared by several carriers. 11 prefixes were assigned in the last 12 months (newest 2026-07-28). 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 |
|---|---|---|---|---|
| Onvoy (Sinch) | Competitive / VoIP (CLEC) | 13(34%) | 8 | 2026-07-28 |
| AT&T Mobility (New Cingular Wireless PCS) | Wireless | 6(16%) | 3 | 2026-05-05 |
| Bandwidth.com | Competitive / VoIP (CLEC) | 4(11%) | 4 | 2024-10-04 |
| Verizon Wireless (Cellco Partnership) | Wireless | 4(11%) | 2 | 2026-01-07 |
| Onvoy (Sinch) | Competitive / VoIP (CLEC) | 4(11%) | 4 | 2025-12-24 |
| Wide Voice, LLC | Competitive / VoIP (CLEC) | 2(5%) | 2 | 2023-12-15 |
| Cablevision Lightpath, INC. | Competitive / VoIP (CLEC) | 1(3%) | 1 | 2024-04-19 |
| Commio, LLC | Competitive / VoIP (CLEC) | 1(3%) | 1 | 2024-01-29 |
| Exiant Communications LLC | Competitive / VoIP (CLEC) | 1(3%) | 1 | 2023-12-19 |
| Omnipoint Communications, INC. | Wireless | 1(3%) | 1 | 2024-01-16 |
| Shelcomm | Unclassified | 1(3%) | 1 | 2025-09-03 |
Largest rate centers (exchanges) by prefixes: Nassau County (36), Cold Spring Harbor (1). Source: NANPA Central Office Code Utilized Assignments (public, refreshed weekly).
What to do about calls from 363 numbers
Before you call back
- Lotteries, prizes & sweepstakes is the top named complaint here. Legitimate prizes never require a fee, tax or gift card to collect.
- Look up the full number above. A missed call from 363 with no voicemail is usually a robocall; anyone who needs you will leave a message.
- Block repeat callers: iPhone, Android, or your carrier's free filter (Verizon, AT&T, T-Mobile).
Report it in New York
- 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: New York Attorney General.
- New York 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 363: questions answered from the data
Where is area code 363?
Area code 363 serves Nassau County, Cold Spring Harbor and Farmingdale, New York, covering Nassau County and Suffolk County. It has been in service since January 20, 2023.
What time zone is area code 363 in?
Area code 363 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.
What are calls from 363 numbers usually about?
Since Jul 24, consumers filed 73 FTC Do Not Call complaints about 363 numbers. The most common named subject was lotteries, prizes & sweepstakes: 42% of complaints, 61% of them recorded messages. Across all subjects, 60% of callers who answered the question said the call was a robocall.
When do 363 spam calls happen?
34% of the complaints that give a call time describe calls between 10am and 1pm, and 90% came on weekdays, most often on Tuesday. Times are as consumers reported them.
Are calls from 363 numbers really local?
Not necessarily. Only 27% of the FTC complaints about 363 numbers came from New York residents; the most came from Massachusetts, New Jersey and Washington. 363 numbers are being used for nationwide campaigns, so the area code says little about where the caller is.
Are 363 robocalls increasing?
In the four weeks to Oct 20, consumers filed 25 FTC complaints about 363 numbers, 19% more than the four weeks before.
How do I report a 363 scam call in New York?
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 New York, the New York Attorney General 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.