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

WESTHAMPTN prefixes in area code 631

NANPA records 5 assigned NXX blocks to rate center WESTHAMPTN in area code 631, 0.6% of the 782 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. 4 holders hold those blocks, the largest being VERIZON NEW YORK, INC. (2), SHELCOMM (1), PEERLESS NETWORK OF NEW YORK, LLC - NY (1). The earliest assignment on record here is 2001-06-23 and the most recent 2025-09-03. 3 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area code 934 – overlay codes cover the same geography, so a rate center is served by all of them.

5 assigned blocks – 0.6% of 631
4 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
631-280 SHELCOMM 2025-09-03 no yes
631-288 Verizon VERIZON NEW YORK, INC. – no yes
631-684 Peerless PEERLESS NETWORK OF NEW YORK, LLC - NY 2001-06-23 yes yes
631-898 Verizon VERIZON NEW YORK, INC. – yes yes
631-998 Altice CABLEVISION LIGHTPATH, INC. - NY – 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 YORK, INC. Verizon 2 40%
SHELCOMM – 1 20%
PEERLESS NETWORK OF NEW YORK, LLC - NY Peerless 1 20%
CABLEVISION LIGHTPATH, INC. - NY Altice 1 20%

Frequently asked

Which prefixes belong to WESTHAMPTN in area code 631?

5 blocks: 280, 288, 684, 898, 998. The table above gives the holder of each.

Which carriers have numbers in WESTHAMPTN?

VERIZON NEW YORK, INC. (2 blocks), SHELCOMM (1 block), PEERLESS NETWORK OF NEW YORK, LLC - NY (1 block), CABLEVISION LIGHTPATH, INC. - NY (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is WESTHAMPTN 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 631

All 782 prefixes in 631