NumberResearch Membership · Data 09/22/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026

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
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
— 845-398 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 PIERMONT 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
— 845-429 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 HAVERSTRAW 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
— 845-439 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
— 845-451 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
— 845-462 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
— 845-471 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 POUGHKEPSI 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
— 845-491 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 POUGHKEPSI NY
— 845-526 1XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 LAKELAND NY
— 845-528 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 LAKELAND NY
— 845-534 6XXX which blocks → VERIZON NEW YORK, INC. 9104 CORNWALL NY
— 845-561 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NEWBURGH NY
— 845-562 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NEWBURGH NY
— 845-563 0XXX which blocks → VERIZON NEW YORK, INC. 9104 NEWBURGH NY
— 845-564 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NEWBURGH NY
— 845-565 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NEWBURGH NY
— 845-566 2XXX which blocks → VERIZON NEW YORK, INC. 9104 NEWBURGH NY
— 845-567 none assigned yet which blocks → VERIZON NEW YORK, INC. 9104 NEWBURGH NY
— 845-568 7XXX which blocks → VERIZON NEW YORK, INC. 9104 NEWBURGH NY
— 845-569 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NEWBURGH NY
— 845-573 1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 SPRING VLY NY
— 845-574 7XXX8XXX9XXX which blocks → VERIZON NEW YORK, INC. 9104 SPRING VLY NY
— 845-575 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 POUGHKEPSI NY
— 845-577 1XXX4XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 SPRING VLY NY
— 845-578 0XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 SPRING VLY NY
— 845-579 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → VERIZON NEW YORK, INC. 9104 SPRING VLY NY
— 845-583 0XXX1XXX2XXX3XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 WHITE LAKE NY
— 845-619 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 PEARLRIVER NY
— 845-620 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 PEARLRIVER NY
— 845-621 6XXX8XXX which blocks → VERIZON NEW YORK, INC. 9104 MAHOPAC NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.