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

HIGHLANDML prefixes in area code 845

NANPA records 4 assigned NXX blocks to rate center HIGHLANDML in area code 845, 0.5% 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. 2 holders hold those blocks, the largest being CSC VOICE, LLC (2), FRONTIER COMMUNICATIONS OF NEW YORK, INC. (2). The earliest assignment on record here is 2001-07-23 and the most recent 2015-05-21. 3 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 329 – overlay codes cover the same geography, so a rate center is served by all of them.

4 assigned blocks – 0.5% of 845
2 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
845-273 CSC VOICE, LLC 2015-05-21 yes yes
845-460 Frontier FRONTIER COMMUNICATIONS OF NEW YORK, INC. 2001-07-23 yes yes
845-827 CSC VOICE, LLC 2004-08-20 yes yes
845-928 Frontier FRONTIER COMMUNICATIONS OF NEW YORK, INC. – no 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
CSC VOICE, LLC – 2 50%
FRONTIER COMMUNICATIONS OF NEW YORK, INC. Frontier 2 50%

Frequently asked

Which prefixes belong to HIGHLANDML in area code 845?

4 blocks: 273, 460, 827, 928. The table above gives the holder of each.

Which carriers have numbers in HIGHLANDML?

CSC VOICE, LLC (2 blocks), FRONTIER COMMUNICATIONS OF NEW YORK, INC. (2 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is HIGHLANDML 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