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

PORTJERVIS prefixes in area code 845

NANPA records 6 assigned NXX blocks to rate center PORTJERVIS in area code 845, 0.8% 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. 4 holders hold those blocks, the largest being CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY (3), ONVOY, LLC- NY (1), CSC VOICE, LLC (1). The earliest assignment on record here is 2004-06-03 and the most recent 2022-10-21. 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 329 – overlay codes cover the same geography, so a rate center is served by all of them.

6 assigned blocks – 0.8% of 845
4 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
845-506 Onvoy ONVOY, LLC- NY 2018-06-12 yes yes
845-672 CSC VOICE, LLC 2004-06-03 yes yes
845-754 Frontier CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY – yes yes
845-856 Frontier CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY – no yes
845-858 Frontier CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY – no yes
845-916 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 2022-10-21 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
CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY Frontier 3 50%
ONVOY, LLC- NY Onvoy 1 16.7%
CSC VOICE, LLC – 1 16.7%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY Verizon 1 16.7%

Frequently asked

Which prefixes belong to PORTJERVIS in area code 845?

6 blocks: 506, 672, 754, 856, 858, 916. The table above gives the holder of each.

Which carriers have numbers in PORTJERVIS?

CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY (3 blocks), ONVOY, LLC- NY (1 block), CSC VOICE, LLC (1 block), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - 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 PORTJERVIS 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