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

SELDEN prefixes in area code 631

NANPA records 24 assigned NXX blocks to rate center SELDEN in area code 631, 3.1% 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. 11 holders hold those blocks, the largest being NEW CINGULAR WIRELESS PCS, LLC - DC (8), VERIZON NEW YORK, INC. (6), METROPCS, INC. (2). The earliest assignment on record here is 2001-01-16 and the most recent 2024-03-20. 17 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 codes 516, 785, 934 – overlay codes cover the same geography, so a rate center is served by all of them.

24 assigned blocks – 3.1% of 631
11 holders of record
17 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
631-320 CSC VOICE, LLC 2006-08-21 yes yes
631-346 Bandwidth BANDWIDTH.COM CLEC, LLC - NY 2010-08-19 yes yes
631-384 T-Mobile METROPCS, INC. 2002-05-14 yes yes
631-413 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2006-02-08 yes yes
631-451 Verizon VERIZON NEW YORK, INC. – no yes
631-453 American Messaging AMERICAN MESSAGING SERVICES, LLC – no yes
631-496 Lumen LEVEL 3 COMMUNICATIONS, LLC - NY 2012-02-20 yes yes
631-512 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2006-02-08 yes yes
631-516 Onvoy ONVOY, LLC- NY 2024-03-20 yes yes
631-538 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC – yes yes
631-561 AT&T TC SYSTEMS, INC. - NY – yes yes
631-681 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2004-11-08 yes yes
631-682 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2002-03-14 no yes
631-696 Verizon VERIZON NEW YORK, INC. – no yes
631-698 Verizon VERIZON NEW YORK, INC. – no yes
631-716 Verizon VERIZON NEW YORK, INC. – yes yes
631-721 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY – yes yes
631-732 Verizon VERIZON NEW YORK, INC. – no yes
631-736 Verizon VERIZON NEW YORK, INC. – no yes
631-764 T-Mobile METROPCS, INC. 2001-04-12 yes yes
631-846 Altice CABLEVISION LIGHTPATH, INC. - NY 2001-01-16 yes yes
631-880 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2004-11-08 yes yes
631-946 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2005-09-07 yes yes
631-997 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2014-07-29 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
NEW CINGULAR WIRELESS PCS, LLC - DC AT&T 8 33.3%
VERIZON NEW YORK, INC. Verizon 6 25%
METROPCS, INC. T-Mobile 2 8.3%
CSC VOICE, LLC – 1 4.2%
BANDWIDTH.COM CLEC, LLC - NY Bandwidth 1 4.2%
AMERICAN MESSAGING SERVICES, LLC American Messaging 1 4.2%
LEVEL 3 COMMUNICATIONS, LLC - NY Lumen 1 4.2%
ONVOY, LLC- NY Onvoy 1 4.2%
TC SYSTEMS, INC. - NY AT&T 1 4.2%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY Verizon 1 4.2%
CABLEVISION LIGHTPATH, INC. - NY Altice 1 4.2%

Same rate center in other codes

Overlay codes cover the same geography, so one rate center is served by all of them.

Frequently asked

Which prefixes belong to SELDEN in area code 631?

24 blocks: 320, 346, 384, 413, 451, 453, 496, 512, 516, 538, 561, 681 and 12 more, all listed in the table above.

Which carriers have numbers in SELDEN?

NEW CINGULAR WIRELESS PCS, LLC - DC (8 blocks), VERIZON NEW YORK, INC. (6 blocks), METROPCS, INC. (2 blocks), CSC VOICE, LLC (1 block), BANDWIDTH.COM CLEC, LLC - NY (1 block), AMERICAN MESSAGING SERVICES, 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 SELDEN 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