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Where is the 363 Area Code?
The 363 area code is located in the state of New York, United States, serving parts of Long Island as part of the eastern New York telephone network. It was introduced in January 2023 as an overlay to area code 516, meaning both area codes serve the same geographic region to meet growing demand for new phone numbers.
Key Locations within the 363 Area Code:
- Major Cities & Communities: Hempstead, Levittown, Freeport, Hicksville, East Meadow, Valley Stream, Long Beach, Elmont, Oceanside, Franklin Square, Glen Cove, Plainview, Uniondale, Baldwin, Rockville Center
- Counties (Partial or Complete Coverage): Nassau County, Queens County, Suffolk County

Time Zone
The 363 area code, covering cities such as Hempstead, Levittown, Freeport, and other parts of Long Island, New York, is in the Eastern Time Zone (ET). The region observes Eastern Standard Time (EST, UTC−5) during the winter months and switches to Eastern Daylight Time (EDT, UTC−4) for daylight saving time in the summer.
About the 363 Area Code in New York
The 363 area code was officially launched in 2023 as an overlay for the 516 region to meet the high demand for telecommunications in Nassau County, New York. It serves major suburban hubs and commercial centers such as Hempstead, Mineola, and Garden City, which are central to Long Island’s economic identity.
This area is a significant driver for the Empire State, with Nassau County alone generating a Gross Domestic Product (GDP) of approximately $130.22 billion in 2024. This economic strength is a vital part of New York’s total output, which reached over $2.32 trillion by the end of 2024 and remains a dominant force in the national economy in 2026.
Key Economic Sectors in the 363 Region:
- Healthcare: Northwell Health, Catholic Health, NYU Langone Hospital—Long Island, Mount Sinai South Nassau
- Finance & Technology: Broadridge Financial Solutions, 1-800-Flowers.com, Dealertrack
- Education: Hofstra University, Adelphi University, New York Institute of Technology (NYIT), Nassau Community College
- Retail & Trade: Kimco Realty, PC Richard & Son, Simon Property Group (Roosevelt Field), Systemax
History of Area Code 363
The 363 area code is relatively new in Long Island, New York. It was officially implemented on January 20, 2023, as an overlay to the existing 516 area code serving Nassau County. It was introduced to meet the increasing demand for new phone numbers in the region.
After its introduction, the residents and businesses in Nassau County can obtain the new phone number without changing their existing 516 numbers. This ensured that the region’s telecommunication service continued without disruption amidst the rapid population growth.
Search 363 Virtual Phone Numbers
Explore the extensive range of 363 area code virtual phone numbers on Calilio. Pick the number that suits your business identity in Long Island.
No Numbers Found
Note:
The first USA or Canada local number is free for each user after sign-up. Additional numbers are charged at $2 per number/month.
Some numbers require ID and address verification to comply with local regulations. Certain numbers may also require A2P 10DLC registration to send SMS or MMS to the United States.
Some numbers may not appear in the search results because they are available only upon request and are not generally offered to customers. Please contact Support for assistance.

363 Area Code: Dialing Format, Prefixes & Network Coverage
The 363 area code covers Nassau County, New York, and requires 10-digit dialing for every local call. This involves dialing the area code along with the seven-digit phone number. For domestic long-distance calls, start with a 1, followed by the area code and number (1-363-XXXXXXX). International callers can begin with their country’s exit code, the U.S. country code, and the full 10-digit number.
This area code supports a variety of landline, mobile, and VoIP providers. Carriers like Cablevision Lightpath and Omnipoint Communications manage prefixes alongside Regional Telephone Corp and Wide Voice. This network provides steady coverage for the busy communities across Long Island.
Beyond traditional services, businesses can get virtual 363 numbers with features like automated receptionists and AI tools. These options help teams manage calls better and create a local presence in New York without needing a physical office.

363 Nearby Area Codes
Key Features of a 363 Area Code Virtual Phone Number
How to Get a 363 Area Code Virtual Phone Number?
Start using a 363 area code number with Calilio by following the easy steps below.
Create an account on Calilio and log in to your dashboard.
Navigate to the left sidebar and click the plus symbol (+) located next to the Number section.
You will land on the My Number page; select the United States as the country for a 363 area code number.
Select the Number Type and then choose the Capabilities (SMS, Voice, MMS).
Scroll down, select an available number from the list, and click the "Add to Cart" button.
In the final step, enter your name and click Confirm Purchase from the cart to complete payment and activate your virtual number.
Already Have Long Island Phone Number?
Switch to advanced VoIP without losing your established identity in Long Island. Port your existing 363 area code phone number on Calilio.

Why Does Your Business Need a 363 Phone Number?
Adopting the 363 area code number indicates that your business is from Long Island, regardless of your location. You instantly become part of the locality, which directly impacts your business growth.
Customer Trust and Familiarity
Cost-Effective Communication
Professional Image
Flexibility and Mobility
Competitive Advantage
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Frequently asked questions
Where is the 363 area code from?
The 363 area code is from Long Island, New York. It specifically covers Nassau County.
What area code is 363 in NC?
What is the new 363 area code?
Is 363 Florida Area Code?

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