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

MIDLAND prefixes in area code 631

NANPA records 8 assigned NXX blocks to rate center MIDLAND in area code 631, 1.0% 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. 5 holders hold those blocks, the largest being VERIZON NEW YORK, INC. (3), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY (2), TC SYSTEMS, INC. - NY (1). 7 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 432, 479, 605, 712 – overlay codes cover the same geography, so a rate center is served by all of them.

8 assigned blocks – 1% of 631
5 holders of record
7 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
631-213 AT&T TC SYSTEMS, INC. - NY – yes yes
631-253 Verizon VERIZON NEW YORK, INC. – yes yes
631-485 Lumen LEVEL 3 COMMUNICATIONS, LLC - NY – yes yes
631-491 Verizon VERIZON NEW YORK, INC. – yes yes
631-510 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY – yes yes
631-643 Verizon VERIZON NEW YORK, INC. – no yes
631-674 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY – yes yes
631-920 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 3 37.5%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY Verizon 2 25%
TC SYSTEMS, INC. - NY AT&T 1 12.5%
LEVEL 3 COMMUNICATIONS, LLC - NY Lumen 1 12.5%
CABLEVISION LIGHTPATH, INC. - NY Altice 1 12.5%

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 MIDLAND in area code 631?

8 blocks: 213, 253, 485, 491, 510, 643, 674, 920. The table above gives the holder of each.

Which carriers have numbers in MIDLAND?

VERIZON NEW YORK, INC. (3 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY (2 blocks), TC SYSTEMS, INC. - NY (1 block), LEVEL 3 COMMUNICATIONS, 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 MIDLAND 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