NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, all time — NPA 845
VERIZON NEW YORK, INC. 159
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 73
ONVOY, LLC- NY 58
NEW CINGULAR WIRELESS PCS, LLC - DC 47
LEVEL 3 COMMUNICATIONS, LLC - NY 47
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 845-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 845-416 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 POUGHKEPSI NY
— 845-417 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 KINGSTON NY
— 845-424 0XXX1XXX5XXX6XXX7XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 GARRISON NY
— 845-425 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SPRING VLY NY
— 845-426 8XXX9XXX which blocks → VERIZON NEW YORK, INC. 9104 SPRING VLY NY
— 845-427 1XXX which blocks → FRONTIER COMMUNICATIONS OF NEW YORK, INC. 0100 MAYBROOK NY
— 845-429 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 HAVERSTRAW NY
— 845-430 none assigned yet which blocks → METROPCS, INC. 5562 KINGSTON NY
— 845-431 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 POUGHKEPSI NY
— 845-432 4XXX5XXX which blocks → VERIZON NEW YORK, INC. 9104 POUGHKEPSI NY
— 845-433 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 POUGHKEPSI NY
— 845-434 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 FALLSBURG NY
— 845-435 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 POUGHKEPSI NY
— 845-436 0XXX3XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 FALLSBURG NY
— 845-437 1XXX8XXX which blocks → VERIZON NEW YORK, INC. 9104 POUGHKEPSI NY
— 845-438 not yet reported which blocks → SPOK, INC. 6630 NEWBURGH NY
— 845-439 0XXX1XXX2XXX6XXX7XXX9XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 LIVISTNMNR NY
— 845-440 1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 BEACON NY
— 845-446 8XXX which blocks → VERIZON NEW YORK, INC. 9104 HIGHLD FLS NY
— 845-449 not yet reported which blocks → SPOK, INC. 6630 POUGHKEPSI NY
— 845-451 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 POUGHKEPSI NY
— 845-452 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 POUGHKEPSI NY
— 845-454 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 POUGHKEPSI NY
— 845-455 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 POUGHKEPSI NY
— 845-457 not yet reported which blocks → FRONTIER COMMUNICATIONS OF NEW YORK, INC. 0100 MONTGOMERY NY
— 845-462 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 POUGHKEPSI NY
— 845-463 none assigned yet which blocks → VERIZON NEW YORK, INC. 9104 POUGHKEPSI NY
— 845-465 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 POUGHKEPSI NY
— 845-466 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NUSO, LLC 732J POUGHKEPSI NY
— 845-468 not yet reported which blocks → PAETEC ITEL, LLC 829J FALLSBURG NY
— 845-469 not yet reported which blocks → FRONTIER COMMUNICATIONS OF NEW YORK, INC. 0100 CHESTER NY
— 845-471 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 POUGHKEPSI NY
— 845-472 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC- NY 384C HAVERSTRAW NY
— 845-473 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 POUGHKEPSI NY
— 845-477 1XXX5XXX6XXX7XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 GREENWD LK NY
— 845-482 0XXX1XXX2XXX6XXX7XXX8XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 JEFFERSNVL NY
— 845-483 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 POUGHKEPSI NY
— 845-485 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 POUGHKEPSI NY
— 845-486 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 POUGHKEPSI NY
— 845-487 not yet reported which blocks → SPOK, INC. 6630 POUGHKEPSI NY
— 845-491 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 POUGHKEPSI NY
— 845-496 not yet reported which blocks → FRONTIER COMMUNICATIONS OF NEW YORK, INC. 0100 WASHIGTNVL NY
— 845-497 6XXX which blocks → FRONTIER COMMUNICATIONS OF NEW YORK, INC. 0100 WASHIGTNVL NY
— 845-498 0XXX1XXX8XXX · 2 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 WURTSBORO NY
— 845-501 4XXX5XXX7XXX9XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 NANUET NY
— 845-502 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NEW CITY NY
— 845-503 not yet reported which blocks → PAETEC ITEL, LLC 829J SPRING VLY NY
— 845-504 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 SUFFERN NY
— 845-507 0–9 XXXall 10 · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NANUET NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.