NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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 518
VERIZON NEW YORK, INC. 225
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
— 518-664 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 MECHANICVL NY
— 518-668 1XXX8XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 LAKEGEORGE NY
— 518-671 2XXX3XXX4XXX5XXX7XXX8XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 HUDSON NY
— 518-672 0XXX1XXX2XXX3XXX6XXX8XXX9XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 PHILMONT NY
— 518-674 4XXX6XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 AVERILL PK NY
— 518-677 0XXX1XXX4XXX6XXX7XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 CAMBRIDGE NY
— 518-678 1XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 PALENVILLE NY
— 518-686 2XXX which blocks → VERIZON NEW YORK, INC. 9104 HOOSICKFLS NY
— 518-692 0XXX1XXX3XXX4XXX5XXX6XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 GREENWICH NY
— 518-695 0XXX1XXX2XXX7XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 SCHUYLERVL NY
— 518-732 1XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 CASTLETON NY
— 518-734 0XXX1XXX2XXX7XXX8XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 WINDHAM NY
— 518-735 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 LYON MT NY
— 518-742 0XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 GLENSFALLS NY
— 518-743 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 GLENSFALLS NY
— 518-745 9XXX which blocks → VERIZON NEW YORK, INC. 9104 GLENSFALLS NY
— 518-746 0XXX4XXX8XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 GLENSFALLS NY
— 518-747 1XXX which blocks → VERIZON NEW YORK, INC. 9104 GLENSFALLS NY
— 518-753 1XXX2XXX3XXX5XXX8XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 VALLEY FLS NY
— 518-761 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 GLENSFALLS NY
— 518-765 0XXX1XXX6XXX7XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 VOORHEESVL NY
— 518-767 1XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 SOBETHLEHM NY
— 518-768 0XXX1XXX3XXX4XXX6XXX7XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 CLARKSVL NY
— 518-780 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 XXXXXXXXXX NY
— 518-782 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 COLONIE NY
— 518-783 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 COLONIE NY
— 518-785 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 COLONIE NY
— 518-786 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 COLONIE NY
— 518-792 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 GLENSFALLS NY
— 518-793 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 GLENSFALLS NY
— 518-797 1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 WESTERLO NY
— 518-798 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 GLENSFALLS NY
— 518-812 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → VERIZON NEW YORK, INC. 9104 GLENSFALLS NY
— 518-814 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 COLONIE NY
— 518-822 6XXX7XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 HUDSON NY
— 518-828 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 HUDSON NY
— 518-841 1XXX2XXX5XXX8XXX which blocks → VERIZON NEW YORK, INC. 9104 AMSTERDAM NY
— 518-842 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 AMSTERDAM NY
— 518-843 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 AMSTERDAM NY
— 518-850 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 XXXXXXXXXX NY
— 518-851 0XXX1XXX4XXX6XXX8XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 CLAVERACK NY
— 518-854 0XXX1XXX2XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 SALEM NY
— 518-856 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 7 holders which blocks → VERIZON NEW YORK, INC. 9104 STREGISFLS NY
— 518-861 0XXX1XXX2XXX3XXX4XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 ALTAMONT NY
— 518-862 8XXX which blocks → VERIZON NEW YORK, INC. 9104 COLONIE NY
— 518-864 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 MARIAVILLE NY
— 518-868 0XXX1XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 CENTRALBDG NY
— 518-869 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 COLONIE NY
— 518-872 3XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 BERNE NY
— 518-873 0XXX1XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 ELIZABTHTN NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.