Area Code 363

Area code 363 covers Nassau and nearby cities including Freeport, Valley Stream, Baldwin in New York, in the Eastern Time.

Area code 363 quick facts

LocationNassau, New York
Time zoneEastern Time
In service2023-01-20
Overlay codes516
Nearby codes516, 347, 465, 718, 929, 917
Carrier coverage36 prefixes; 41% wireless
FTC complaint data46 complaints across 13 numbers
Data current as ofAugust 2, 2026

363 is Long Island's newest area code

363 is the newest area code for Nassau County on Long Island, added on January 20, 2023 as an all-services overlay of 516. The New York Public Service Commission approved it (Case 21-C-0473) after 516 was projected to exhaust its numbers in 2023. Note that 363 covers Nassau County only — it is not part of New York City's five-borough complex (347/718/917/929/465). Existing 516 numbers are unchanged, 10-digit dialing was already the norm, and only new Nassau lines may receive a 363 number.

Because 363 is new and unfamiliar, some people are wary when it appears on caller ID and search for “who called me from 363?” An area code only shows where a number is registered, and any number can be spoofed — so a 363 call is not suspicious on its own. Judge each call by what it asks for, not the code. Is a call from 363 a scam?

Is a call from 363 a scam? Who called me from 363?

FTC complaints involving 363 numbers

13numbers reported
46FTC complaints

Numbers shown with area code 363 in the FTC's Do Not Call “Reported Calls” database (recent reporting window). Most common reported reasons: “Lotteries, prizes & sweepstakes”, “Reducing your debt (credit cards, mortgage, student loans)”, “Other”.

Most-complained 363 numbers:

These are FTC Do Not Call complaints filed about specific numbers shown with this area code — frequently spoofed. The area code itself is not a scam. See the most-reported area codes and the most-reported phone numbers nationwide.

Cities in area code 363

Nassau, Freeport, Valley Stream, Baldwin, East Meadow, Elmont, Franklin Square, Garden City, Glen Cove, Hicksville, Levittown, Long Beach

Area codes by city

Carriers in area code 363

Area code 363 spans 36 prefixes, about 41% wireless. Top carriers: ONVOY, LLC- NY, NEW CINGULAR WIRELESS PCS, LLC - DC, BANDWIDTH.COM CLEC, LLC - NY, ONVOY SPECTRUM, LLC. Look up the carrier and line type for a 363 number.

Other New York area codes

Nearby area codes

Frequently asked questions

Where is area code 363?

Area code 363 covers Nassau and nearby cities including Freeport, Valley Stream, Baldwin in New York, in the Eastern Time.

What cities use area code 363?

Area code 363 serves Nassau, Freeport, Valley Stream, Baldwin, East Meadow, and 15 other communities in New York.

What time zone is area code 363 in?

Area code 363 is in the Eastern Time (America/New_York).

How do you dial a 363 number?

Dial all 10 digits: 363 followed by the 7-digit local number. From abroad, dial +1 363 and the local number.

Is a call from area code 363 a scam?

A 363 number is geographically tied to New York, but caller ID can be spoofed, so the displayed area code does not prove where a caller really is. If you did not expect the call, do not share personal information and consider looking the number up.

Is 363 a country code?

No. 363 is a US area code (a domestic 3-digit code), not a country code. The country (calling) code for the United States is +1, shared across the North American Numbering Plan. So a full 363 number written for international dialing looks like +1 363 followed by the 7-digit local number.

Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of August 2, 2026. Refreshed monthly.