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

CTRMORICHS prefixes in area code 631

NANPA records 6 assigned NXX blocks to rate center CTRMORICHS in area code 631, 0.8% 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 ONVOY, LLC- NY (2), VERIZON NEW YORK, INC. (2), TC SYSTEMS, INC. - NY (1). The earliest assignment on record here is 2016-02-15 and the most recent 2016-02-15. 4 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.

6 assigned blocks – 0.8% of 631
4 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
631-400 Onvoy ONVOY, LLC- NY – yes yes
631-503 AT&T TC SYSTEMS, INC. - NY – yes yes
631-874 Verizon VERIZON NEW YORK, INC. – no yes
631-878 Verizon VERIZON NEW YORK, INC. – no yes
631-909 Altice CABLEVISION LIGHTPATH, INC. - NY – yes yes
631-975 Onvoy ONVOY, LLC- NY 2016-02-15 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
ONVOY, LLC- NY Onvoy 2 33.3%
VERIZON NEW YORK, INC. Verizon 2 33.3%
TC SYSTEMS, INC. - NY AT&T 1 16.7%
CABLEVISION LIGHTPATH, INC. - NY Altice 1 16.7%

Frequently asked

Which prefixes belong to CTRMORICHS in area code 631?

6 blocks: 400, 503, 874, 878, 909, 975. The table above gives the holder of each.

Which carriers have numbers in CTRMORICHS?

ONVOY, LLC- NY (2 blocks), VERIZON NEW YORK, INC. (2 blocks), TC SYSTEMS, INC. - 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 CTRMORICHS 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