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

W COMMACK prefixes in area code 631

NANPA records 13 assigned NXX blocks to rate center W COMMACK in area code 631, 1.7% 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. 6 holders hold those blocks, the largest being VERIZON NEW YORK, INC. (6), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY (2), ONVOY, LLC- NY (2). 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.

13 assigned blocks – 1.7% of 631
6 holders of record
10 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
631-266 Verizon VERIZON NEW YORK, INC. – yes yes
631-368 Verizon VERIZON NEW YORK, INC. – no yes
631-462 Verizon VERIZON NEW YORK, INC. – no yes
631-486 Altice CABLEVISION LIGHTPATH, INC. - NY – yes yes
631-489 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY – yes yes
631-493 Verizon VERIZON NEW YORK, INC. – yes yes
631-499 Verizon VERIZON NEW YORK, INC. – no yes
631-600 Onvoy ONVOY, LLC- NY – yes yes
631-623 AT&T TC SYSTEMS, INC. - NY – yes yes
631-850 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY – yes yes
631-858 Verizon VERIZON NEW YORK, INC. – yes yes
631-900 Onvoy ONVOY, LLC- NY – yes yes
631-971 Windstream PAETEC ITEL, 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
VERIZON NEW YORK, INC. Verizon 6 46.2%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY Verizon 2 15.4%
ONVOY, LLC- NY Onvoy 2 15.4%
CABLEVISION LIGHTPATH, INC. - NY Altice 1 7.7%
TC SYSTEMS, INC. - NY AT&T 1 7.7%
PAETEC ITEL, LLC Windstream 1 7.7%

Frequently asked

Which prefixes belong to W COMMACK in area code 631?

13 blocks: 266, 368, 462, 486, 489, 493, 499, 600, 623, 850, 858, 900 and 1 more, all listed in the table above.

Which carriers have numbers in W COMMACK?

VERIZON NEW YORK, INC. (6 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY (2 blocks), ONVOY, LLC- NY (2 blocks), CABLEVISION LIGHTPATH, INC. - NY (1 block), TC SYSTEMS, INC. - NY (1 block), PAETEC ITEL, 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 COMMACK 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