Area Code Overview

Area code 363 is a geographic telephone area code in New York that went into service on January 20, 2023. The geographic regions covered by this area code overlay has a population of approximately 138,209.

Overlay and Dialing Rules

Area Code: 363
State: New York
Type: General Purpose Code
In Service Date: January 20, 2023
Overlay Complex: 363/516
Local Dialing Plan: This area does require you to dial the area code when calling locally.

Estimated Number of Assigned Phone Numbers in Area Code 363

This area code is ranked 353rd out of 363 nationwide in estimated assigned phone numbers. Within the state territory it serves, it is ranked 21st out of 21.

295,000

Estimated Service-Type Mix of Assigned Phone Numbers in Area Code 363

Total assigned 295,000

Wireless

76,000 assigned

25.76%

Wireline and VoIP

188,000 assigned

63.73%

Other / Unclassified

31,000 assigned

10.51%

Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Area Code 363

Estimated assigned wireless phone numbers: 76,000

Numbers may later be ported to another carrier, but this chart reflects original number assignment, not current subscriber share.

AT&T Wireless 41,000 (53.95%)

Verizon Wireless 30,000 (39.47%)

T-Mobile 5,000 (6.58%)

Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Area Code 363

Estimated assigned wireline and VoIP phone numbers: 188,000

Onvoy 112,000 (59.57%)

Bandwidth 28,000 (14.89%)

Spectrum 27,000 (14.36%)

CABLEVISION LIGHTPATH, INC. - NY 10,000 (5.32%)

Commio 4,000 (2.13%)

Telnyx 2,000 (1.06%)

Wide Voice 2,000 (1.06%)

NUSO 1,000 (0.53%)

Peerless Network 1,000 (0.53%)

TERRA NOVA TELECOM INC. 1,000 (0.53%)

Other / Unclassified Assigned Numbering in Area Code 363

Estimated assigned other or unclassified phone numbers: 31,000

EXIANT COMMUNICATIONS LLC 12,000 (38.71%)

SHELCOMM 10,000 (32.26%)

YORKSTREAM COMMUNICATIONS LLC 4,000 (12.90%)

IP HORIZON LLC 3,000 (9.68%)

HD CARRIER LLC 1,000 (3.23%)

TC SYSTEMS, INC. - NY 1,000 (3.23%)

Cities and Towns in Area Code 363

Amityville, New York Brentwood, New York Central Islip, New York Cold Spring Harbor, New York Farmingdale, New York Nassau County, New York Selden, New York

These geographic regions are also served by area code 516.

How These Figures Were Built

These figures are estimates based on public phone-number assignment records. They are meant to show the likely mix of assigned phone numbers associated with area code 363, not live customer counts.

Some providers may have assigned phone numbers tied to this area code even if they do not actively market or sell service locally. These figures reflect public number-assignment records, not confirmed local service availability.

They also do not reflect number portability at the individual phone-number level, so some numbers may now be used on a different network or by a different provider than the original assignment records suggest.

Population data and locality matching provided by GeoNames.

Last refreshed: April 15, 2026 6:22 pm