Area Code Overview

Area code 401 is a geographic telephone area code in Rhode Island that went into service on January 1, 1947. The geographic regions covered by this area code overlay has a population of approximately 1,112,308.

Overlay and Dialing Rules

Area Code: 401
State: Rhode Island
Type: General Purpose Code
In Service Date: January 1, 1947
Overlay Complex: 401
Local Dialing Plan: This area does not require you to dial the area code when calling locally.

Estimated Number of Assigned Phone Numbers in Area Code 401

This area code is ranked 205th out of 363 nationwide in estimated assigned phone numbers. Within the state territory it serves, it is ranked 1st out of 1.

4,423,000

Estimated Service-Type Mix of Assigned Phone Numbers in Area Code 401

Total assigned 4,423,000

Wireless

1,660,000 assigned

37.53%

Wireline and VoIP

2,591,000 assigned

58.58%

Other / Unclassified

172,000 assigned

3.89%

Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Area Code 401

Estimated assigned wireless phone numbers: 1,660,000

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

T-Mobile 787,000 (47.41%)

Verizon Wireless 483,000 (29.10%)

AT&T Wireless 389,000 (23.43%)

Optimum Mobile 1,000 (0.06%)

Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Area Code 401

Estimated assigned wireline and VoIP phone numbers: 2,591,000

VERIZON NEW ENGLAND INC. 921,000 (35.55%)

Onvoy 582,000 (22.46%)

Bandwidth 248,000 (9.57%)

Comcast Business 176,000 (6.79%)

Lumen 146,000 (5.63%)

PAETEC ITEL, LLC 122,000 (4.71%)

Spectrum 97,000 (3.74%)

Peerless Network 89,000 (3.44%)

TERRA NOVA TELECOM INC. 53,000 (2.05%)

Telnyx 42,000 (1.62%)

Commio 41,000 (1.58%)

YMAX COMMUNICATIONS CORP. - RI 27,000 (1.04%)

Other / Unclassified Assigned Numbering in Area Code 401

Estimated assigned other or unclassified phone numbers: 172,000

TELEPORT COMMUNICATIONS AMERICA, LLC - CA 54,000 (31.40%)

SPOK, INC. 40,000 (23.26%)

HD CARRIER LLC 31,000 (18.02%)

TON80 COMMUNICATIONS, LLC 25,000 (14.53%)

AMERICAN MESSAGING SERVICES, LLC 10,000 (5.81%)

INTRADO COMMUNICATIONS, LLC 4,000 (2.33%)

FRACTEL, LLC 2,000 (1.16%)

AHOI LLC 1,000 (0.58%)

EXIANT COMMUNICATIONS LLC 1,000 (0.58%)

IP HORIZON LLC 1,000 (0.58%)

THE VOICE APPLICATION NETWORK, LLC 1,000 (0.58%)

U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 1,000 (0.58%)

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 401, 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

401 Area Code