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

PTJEFFERSN prefixes in area code 631

NANPA records 15 assigned NXX blocks to rate center PTJEFFERSN in area code 631, 1.9% 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. 7 holders hold those blocks, the largest being VERIZON NEW YORK, INC. (6), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY (3), CSC VOICE, LLC (2). The earliest assignment on record here is 2005-04-08 and the most recent 2013-07-11. 10 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.

15 assigned blocks – 1.9% of 631
7 holders of record
10 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
631-331 Verizon VERIZON NEW YORK, INC. – no yes
631-403 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 2006-08-23 yes yes
631-473 Verizon VERIZON NEW YORK, INC. – no yes
631-474 Verizon VERIZON NEW YORK, INC. – no yes
631-476 Verizon VERIZON NEW YORK, INC. – no yes
631-509 CSC VOICE, LLC 2006-08-21 yes yes
631-535 Peerless PEERLESS NETWORK OF NEW YORK, LLC - NY 2012-09-06 yes yes
631-642 Verizon VERIZON NEW YORK, INC. – yes yes
631-743 CSC VOICE, LLC 2013-07-11 yes yes
631-791 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY – yes yes
631-802 Windstream PAETEC ITEL, LLC – yes yes
631-828 Altice CABLEVISION LIGHTPATH, INC. - NY – yes yes
631-928 Verizon VERIZON NEW YORK, INC. – no yes
631-938 Lumen LEVEL 3 COMMUNICATIONS, LLC - NY 2005-04-08 yes yes
631-978 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - 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 6 40%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY Verizon 3 20%
CSC VOICE, LLC – 2 13.3%
PEERLESS NETWORK OF NEW YORK, LLC - NY Peerless 1 6.7%
PAETEC ITEL, LLC Windstream 1 6.7%
CABLEVISION LIGHTPATH, INC. - NY Altice 1 6.7%
LEVEL 3 COMMUNICATIONS, LLC - NY Lumen 1 6.7%

Frequently asked

Which prefixes belong to PTJEFFERSN in area code 631?

15 blocks: 331, 403, 473, 474, 476, 509, 535, 642, 743, 791, 802, 828 and 3 more, all listed in the table above.

Which carriers have numbers in PTJEFFERSN?

VERIZON NEW YORK, INC. (6 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY (3 blocks), CSC VOICE, LLC (2 blocks), PEERLESS NETWORK OF NEW YORK, LLC - NY (1 block), PAETEC ITEL, LLC (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 PTJEFFERSN 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