363 Area Code: Location, History, Time Zone, Scam Risks & How to Get a Number

Area code 363

The 363 area code is a telephone area code in the North American Numbering Plan (NANP) that serves the western portion of Virginia. Introduced as an overlay for the existing 540 area code, it covers prominent cities such as Roanoke, Blacksburg, Harrisonburg, and Winchester, as well as the Shenandoah Valley and parts of the Blue Ridge region. This overlay ensures a continuous supply of telephone numbers for residents, businesses, and institutions, including Virginia Tech and James Madison University, without requiring existing customers to change their current phone numbers.

What Is the 363 Area Code?

Area code 363​ serves Nassau County, New York, on Long Island, as part of the North American Numbering Plan (NANP). Authorities launched it on January 20, 2023, as an overlay for the historic 516 area code, which had served Nassau County exclusively for more than 70 years.

Qucik facts

FactDetail
Area code363
StateNew York, USA
RegionNassau County, Long Island
TypeOverlay of 516
Time zoneEastern Time (ET)
Became availableJanuary 20, 2023
Dialing10 digits (area code + number)
Country code+1

Where Is the 363 Area Code Located?

The area code 363 location in the western and northwestern parts of Virginia, covering the Shenandoah Valley, the Blue Ridge Mountains, and the Alleghany Highlands.
It is an overlay code, meaning it geographically shares the exact same footprint as the older 540 area code.

Communities in the 363/516 region include

  • Hempstead and Levittown
  • Garden City
  • Great Neck
  • Long Beach
  • Oyster Bay and Syosset
  • Port Washington and Manhasset
363 area code

What Is an Area Code Overlay?

An area code overlay occurs when a second area code is added to the exact same geographic region as an existing area code.
This happens when a region runs out of available phone numbers due to population growth and the rise of connected devices like smartphones, tablets, and smartwatches. Instead of splitting the region in half and forcing millions of people to change their existing phone numbers, the telecom industry assigns a new area code to serve the exact same boundary.

History of the 363 Area Code

The 363 area code was created in January 2023 as an overlay for Nassau County, New York. The region originally used the 914 code in 1947, switched to 516 in 1951 to handle Long Island’s post-war growth, and saw Suffolk County split off into 631 in 1999. By 2021, Nassau County shifted to mandatory 10-digit dialing, setting the stage for the 363 code to launch two years later when 516 completely ran out of available phone numbers.

Time Zone

The 363 area code operates in the Eastern Time Zone (ET) of the United States. It follows Eastern Standard Time (EST, UTC-5) during winter and Eastern Daylight Time (EDT, UTC-4) during summer.

How to Dial a 363 Number

To dial a 363 area code number, you must use 10-digit dialing, even if you are calling from a local Nassau County number.

  • Within Nassau County (363 or 516): dial the full 10 digits, area code plus seven-digit number.
  • From elsewhere in the U.S.: dial 1 + 363 + seven-digit number.
  • From outside the U.S.: dial your country’s exit code, then +1 363 + seven-digit number.
  • 911: Calls to 911 remain three digits.

Is 363 a Scam Area Code?

No, 363 is not an inherently malicious or fake scam area code. It is a completely legitimate, official North American telephone area code assigned specifically to Nassau County, New York. However, just like any other real area code in the United States, scammers can use and abuse it.

363 vs. 516: What’s the Difference?

The main difference between the 363 and 516 area codes is their age and number availability. Geographically, they serve the exact same footprint of Nassau County, New York, but they were created decades apart.

Feature516 Area Code363 Area Code
StatusThe original area code.The new overlay code.
Launch Year19512023
AvailabilityExhausted (no new numbers left).Abundant (plenty of new numbers).
Who Gets It?Long-time residents and businesses.New phone lines, cell phones, and setups.
Cost / DialingIdentical local calling rates; requires 10-digit dialing.Identical local calling rates; requires 10-digit dialing.

How to Get a 363 Phone Number

To get a 363 phone code​ number, you can request one directly through your phone service provider or purchase one via a virtual phone service. Since it is the newer overlay code for Nassau County, New York, these numbers are highly available.

Code area 363

Frequently Asked Questions(FAQs)

It is located in Nassau County, New York (Long Island), covering towns like Hempstead, Oyster Bay, and North Hempstead.

It was launched in January 2023 because the region’s original area code, 516, completely ran out of available phone numbers.

Yes. Everyone in Nassau County must dial the full 10-digit number (area code + 7-digit number) for all local calls.

No. It is a legitimate U.S. area code. However, scammers can still spoof 363 numbers to trick people into answering, just like any other area code.

It operates in the Eastern Time Zone (ET) and observes Daylight Saving Time changes.

Conclusion

In conclusion, the 363 area code is a legitimate and vital addition to the telecommunications landscape of Nassau County, New York. Introduced in January 2023 as a necessary overlay to relieve the exhausted 516 area code, it ensures that Long Island residents and businesses continue to have access to new phone lines. While it requires mandatory 10-digit dialing for all local calls, it changes nothing for existing 516 users and introduces no extra calling fees.

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