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

TIVERTON prefixes in area code 401

NANPA records 8 assigned NXX blocks to rate center TIVERTON in area code 401, 1.4% 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. 6 holders hold those blocks, the largest being PAETEC ITEL, LLC (2), VERIZON NEW ENGLAND INC. (2), TELEPORT COMMUNICATIONS AMERICA, LLC - CA (1). 8 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

8 assigned blocks – 1.4% of 401
6 holders of record
8 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
401-307 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA – yes yes
401-375 Windstream PAETEC ITEL, LLC – yes yes
401-599 Windstream PAETEC ITEL, LLC – yes yes
401-624 Verizon VERIZON NEW ENGLAND INC. – yes yes
401-625 Verizon VERIZON NEW ENGLAND INC. – yes yes
401-685 Lumen LEVEL 3 COMMUNICATIONS, LLC - RI – yes yes
401-816 Comcast COMCAST IP PHONE, LLC – yes yes
401-858 Onvoy ONVOY, LLC - RI – 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
PAETEC ITEL, LLC Windstream 2 25%
VERIZON NEW ENGLAND INC. Verizon 2 25%
TELEPORT COMMUNICATIONS AMERICA, LLC - CA AT&T 1 12.5%
LEVEL 3 COMMUNICATIONS, LLC - RI Lumen 1 12.5%
COMCAST IP PHONE, LLC Comcast 1 12.5%
ONVOY, LLC - RI Onvoy 1 12.5%

Frequently asked

Which prefixes belong to TIVERTON in area code 401?

8 blocks: 307, 375, 599, 624, 625, 685, 816, 858. The table above gives the holder of each.

Which carriers have numbers in TIVERTON?

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

Is TIVERTON 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