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

MIDDLEPORT prefixes in area code 585

NANPA records 5 assigned NXX blocks to rate center MIDDLEPORT in area code 585, 0.7% of the 676 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. 3 holders hold those blocks, the largest being CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY (3), VERIZON NEW YORK, INC. (1), ONVOY, LLC- NY (1). The earliest assignment on record here is 2007-01-16 and the most recent 2022-08-18. 5 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 716 – overlay codes cover the same geography, so a rate center is served by all of them.

5 assigned blocks – 0.7% of 585
3 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
585-205 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 2007-01-16 yes yes
585-480 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 2020-01-27 yes yes
585-640 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 2022-08-18 yes yes
585-735 Verizon VERIZON NEW YORK, INC. – yes yes
585-866 Onvoy ONVOY, LLC- 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
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY Verizon 3 60%
VERIZON NEW YORK, INC. Verizon 1 20%
ONVOY, LLC- NY Onvoy 1 20%

Frequently asked

Which prefixes belong to MIDDLEPORT in area code 585?

5 blocks: 205, 480, 640, 735, 866. The table above gives the holder of each.

Which carriers have numbers in MIDDLEPORT?

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY (3 blocks), VERIZON NEW YORK, INC. (1 block), ONVOY, LLC- 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 MIDDLEPORT 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 585

All 676 prefixes in 585