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

PLAISTOW prefixes in area code 603

NANPA records 7 assigned NXX blocks to rate center PLAISTOW in area code 603, 0.9% of the 752 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 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH (2), FREEDOM RING COMMUNICATIONS, LLC (1), PAETEC ITEL, LLC (1). 6 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

7 assigned blocks – 0.9% of 603
6 holders of record
6 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
603-257 FREEDOM RING COMMUNICATIONS, LLC – yes yes
603-378 Consolidated CONSOLIDATED COMM OF NO. NEW ENGLAND-NH – yes yes
603-382 Consolidated CONSOLIDATED COMM OF NO. NEW ENGLAND-NH – no yes
603-612 Windstream PAETEC ITEL, LLC – yes yes
603-797 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH – yes yes
603-819 Lumen LEVEL 3 COMMUNICATIONS, LLC - NH – yes yes
603-974 Comcast COMCAST IP PHONE, 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
CONSOLIDATED COMM OF NO. NEW ENGLAND-NH Consolidated 2 28.6%
FREEDOM RING COMMUNICATIONS, LLC – 1 14.3%
PAETEC ITEL, LLC Windstream 1 14.3%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH Verizon 1 14.3%
LEVEL 3 COMMUNICATIONS, LLC - NH Lumen 1 14.3%
COMCAST IP PHONE, LLC Comcast 1 14.3%

Frequently asked

Which prefixes belong to PLAISTOW in area code 603?

7 blocks: 257, 378, 382, 612, 797, 819, 974. The table above gives the holder of each.

Which carriers have numbers in PLAISTOW?

CONSOLIDATED COMM OF NO. NEW ENGLAND-NH (2 blocks), FREEDOM RING COMMUNICATIONS, LLC (1 block), PAETEC ITEL, LLC (1 block), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH (1 block), LEVEL 3 COMMUNICATIONS, LLC - NH (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 PLAISTOW 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 603

All 752 prefixes in 603