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

MONROE prefixes in area code 845

NANPA records 22 assigned NXX blocks to rate center MONROE in area code 845, 2.8% of the 783 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 FRONTIER COMMUNICATIONS OF NEW YORK, INC. (6), OMNIPOINT COMMUNICATIONS, INC. - NY (3), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY (2). The earliest assignment on record here is 2001-02-02 and the most recent 2022-10-25. 20 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 207, 260, 318, 329 – overlay codes cover the same geography, so a rate center is served by all of them.

22 assigned blocks – 2.8% of 845
11 holders of record
20 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
845-238 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 2002-12-30 yes yes
845-248 T-Mobile OMNIPOINT COMMUNICATIONS, INC. - NY 2003-03-28 yes yes
845-325 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 2002-06-26 yes yes
845-395 WARWICK VALLEY TELEPHONE COMPANY 2009-08-11 yes yes
845-492 Frontier FRONTIER COMMUNICATIONS OF NEW YORK, INC. 2001-02-02 yes yes
845-500 Frontier FRONTIER COMMUNICATIONS OF AMERICA, INC. - NY 2009-07-22 yes yes
845-537 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2001-08-28 yes yes
845-604 Onvoy ONVOY, LLC- NY 2018-06-12 yes yes
845-637 Lumen LEVEL 3 COMMUNICATIONS, LLC - NY 2001-12-03 yes yes
845-655 Frontier FRONTIER COMMUNICATIONS OF NEW YORK, INC. 2010-12-28 yes yes
845-662 T-Mobile OMNIPOINT COMMUNICATIONS, INC. - NY 2002-07-22 yes yes
845-751 Windstream PAETEC ITEL, LLC 2005-06-20 yes yes
845-774 Frontier FRONTIER COMMUNICATIONS OF NEW YORK, INC. – yes yes
845-776 Frontier FRONTIER COMMUNICATIONS OF AMERICA, INC. - NY 2005-04-14 yes yes
845-781 Frontier FRONTIER COMMUNICATIONS OF NEW YORK, INC. – yes yes
845-782 Frontier FRONTIER COMMUNICATIONS OF NEW YORK, INC. – no yes
845-783 Frontier FRONTIER COMMUNICATIONS OF NEW YORK, INC. – no yes
845-799 XCHANGE TELECOM CORP. - NY 2020-04-01 yes yes
845-806 T-Mobile METROPCS, INC. 2005-06-29 yes yes
845-837 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2005-07-11 yes yes
845-907 T-Mobile OMNIPOINT COMMUNICATIONS, INC. - NY 2022-01-13 yes yes
845-923 Onvoy ONVOY, LLC- NY 2022-10-25 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
FRONTIER COMMUNICATIONS OF NEW YORK, INC. Frontier 6 27.3%
OMNIPOINT COMMUNICATIONS, INC. - NY T-Mobile 3 13.6%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY Verizon 2 9.1%
FRONTIER COMMUNICATIONS OF AMERICA, INC. - NY Frontier 2 9.1%
NEW CINGULAR WIRELESS PCS, LLC - DC AT&T 2 9.1%
ONVOY, LLC- NY Onvoy 2 9.1%
WARWICK VALLEY TELEPHONE COMPANY – 1 4.5%
LEVEL 3 COMMUNICATIONS, LLC - NY Lumen 1 4.5%
PAETEC ITEL, LLC Windstream 1 4.5%
XCHANGE TELECOM CORP. - NY – 1 4.5%
METROPCS, INC. T-Mobile 1 4.5%

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 MONROE in area code 845?

22 blocks: 238, 248, 325, 395, 492, 500, 537, 604, 637, 655, 662, 751 and 10 more, all listed in the table above.

Which carriers have numbers in MONROE?

FRONTIER COMMUNICATIONS OF NEW YORK, INC. (6 blocks), OMNIPOINT COMMUNICATIONS, INC. - NY (3 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY (2 blocks), FRONTIER COMMUNICATIONS OF AMERICA, INC. - NY (2 blocks), NEW CINGULAR WIRELESS PCS, LLC - DC (2 blocks), ONVOY, LLC- NY (2 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is MONROE 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 845

All 783 prefixes in 845