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

W WARWICK prefixes in area code 401

NANPA records 19 assigned NXX blocks to rate center W WARWICK in area code 401, 3.3% 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. 8 holders hold those blocks, the largest being VERIZON NEW ENGLAND INC. (7), PAETEC ITEL, LLC (5), TELEPORT COMMUNICATIONS AMERICA, LLC - CA (2). The earliest assignment on record here is 2001-10-08 and the most recent 2023-04-03. 15 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

19 assigned blocks – 3.3% of 401
8 holders of record
15 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
401-206 T-Mobile METROPCS, INC. 2002-10-23 yes yes
401-250 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA 2001-10-25 yes yes
401-262 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
401-304 Windstream PAETEC ITEL, LLC 2001-10-08 yes yes
401-320 Windstream PAETEC ITEL, LLC – yes yes
401-381 Windstream PAETEC ITEL, LLC – yes yes
401-535 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA – yes yes
401-586 Windstream PAETEC ITEL, LLC – yes yes
401-589 Windstream PAETEC ITEL, LLC – yes yes
401-615 Comcast COMCAST IP PHONE, LLC – yes yes
401-821 Verizon VERIZON NEW ENGLAND INC. – no yes
401-822 Verizon VERIZON NEW ENGLAND INC. – no yes
401-823 Verizon VERIZON NEW ENGLAND INC. – yes yes
401-825 Verizon VERIZON NEW ENGLAND INC. – yes yes
401-826 Verizon VERIZON NEW ENGLAND INC. – yes yes
401-827 Verizon VERIZON NEW ENGLAND INC. – yes yes
401-828 Verizon VERIZON NEW ENGLAND INC. – no yes
401-922 Onvoy ONVOY, LLC - RI – no yes
401-990 COMMIO, LLC 2023-04-03 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 7 36.8%
PAETEC ITEL, LLC Windstream 5 26.3%
TELEPORT COMMUNICATIONS AMERICA, LLC - CA AT&T 2 10.5%
METROPCS, INC. T-Mobile 1 5.3%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 1 5.3%
COMCAST IP PHONE, LLC Comcast 1 5.3%
ONVOY, LLC - RI Onvoy 1 5.3%
COMMIO, LLC – 1 5.3%

Frequently asked

Which prefixes belong to W WARWICK in area code 401?

19 blocks: 206, 250, 262, 304, 320, 381, 535, 586, 589, 615, 821, 822 and 7 more, all listed in the table above.

Which carriers have numbers in W WARWICK?

VERIZON NEW ENGLAND INC. (7 blocks), PAETEC ITEL, LLC (5 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - CA (2 blocks), METROPCS, INC. (1 block), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (1 block), COMCAST IP PHONE, LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is W WARWICK 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