NumberingData
Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records

WESTERLY prefixes in area code 401

NANPA records 14 assigned NXX blocks to rate center WESTERLY in area code 401, 2.4% of the 581 blocks assigned in the code. A rate center is the billing geography a block is allocated to – NANPA truncates the name to ten characters, so read it as a NANPA label rather than a town. 7 holders hold those blocks, the largest being VERIZON NEW ENGLAND INC. (4), COMCAST IP PHONE, LLC (3), LEVEL 3 COMMUNICATIONS, LLC - RI (2). 12 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

14 assigned blocks – 2.4% of 401
7 holders of record
12 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
401-315 Comcast COMCAST IP PHONE, LLC – yes yes
401-322 Verizon VERIZON NEW ENGLAND INC. – yes yes
401-326 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
401-348 Verizon VERIZON NEW ENGLAND INC. – no yes
401-377 Verizon VERIZON NEW ENGLAND INC. – yes yes
401-388 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA – yes yes
401-485 Lumen LEVEL 3 COMMUNICATIONS, LLC - RI – yes yes
401-584 Comcast COMCAST IP PHONE, LLC – yes yes
401-596 Verizon VERIZON NEW ENGLAND INC. – no yes
401-604 Windstream PAETEC ITEL, LLC – yes yes
401-620 Onvoy ONVOY, LLC - RI – yes yes
401-622 Lumen LEVEL 3 COMMUNICATIONS, LLC - RI – yes yes
401-637 Comcast COMCAST IP PHONE, LLC – yes yes
401-656 Windstream PAETEC ITEL, LLC – yes yes

The holder is who received the block from the numbering administrator. It is not necessarily the carrier serving a given number: numbers move with their owners, and a pooled block is shared.

Who holds the blocks

HolderBrandBlocksShare here
VERIZON NEW ENGLAND INC. Verizon 4 28.6%
COMCAST IP PHONE, LLC Comcast 3 21.4%
LEVEL 3 COMMUNICATIONS, LLC - RI Lumen 2 14.3%
PAETEC ITEL, LLC Windstream 2 14.3%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 1 7.1%
TELEPORT COMMUNICATIONS AMERICA, LLC - CA AT&T 1 7.1%
ONVOY, LLC - RI Onvoy 1 7.1%

Frequently asked

Which prefixes belong to WESTERLY in area code 401?

14 blocks: 315, 322, 326, 348, 377, 388, 485, 584, 596, 604, 620, 622 and 2 more, all listed in the table above.

Which carriers have numbers in WESTERLY?

VERIZON NEW ENGLAND INC. (4 blocks), COMCAST IP PHONE, LLC (3 blocks), LEVEL 3 COMMUNICATIONS, LLC - RI (2 blocks), PAETEC ITEL, LLC (2 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (1 block), TELEPORT COMMUNICATIONS AMERICA, LLC - CA (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is WESTERLY a city?

It is a rate center – the unit NANPA allocates number blocks to. Its name is abbreviated to ten characters and is not necessarily a settlement: we print it as recorded rather than guess at the full name.

Other rate centers in 401

All 581 prefixes in 401