NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 315
VERIZON NEW YORK, INC. 216
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
— 315-496 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 SEMPRONIUS NY
— 315-497 4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 MORAVIA NY
— 315-498 0XXX1XXX5XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-499 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-524 0XXX which blocks → VERIZON NEW YORK, INC. 9104 ONTARIO NY
— 315-531 0XXX1XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 PENN YAN NY
— 315-536 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 PENN YAN NY
— 315-539 6XXX7XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 WATERLOO NY
— 315-543 0XXX1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 HARRISVL NY
— 315-549 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 FAYETTE NY
— 315-568 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SENECA FLS NY
— 315-581 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 XXXXXXXXXX NY
— 315-585 0XXX1XXX2XXX4XXX5XXX7XXX8XXX · 7 holders which blocks → VERIZON NEW YORK, INC. 9104 MACDOUGALL NY
— 315-587 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 NORTH ROSE NY
— 315-589 0XXX1XXX3XXX5XXX6XXX7XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 WILLIAMSON NY
— 315-594 0XXX3XXX4XXX5XXX6XXX7XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 WOLCOTT NY
— 315-597 0XXX1XXX8XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 PALMYRA NY
— 315-599 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 OSCEOLA NY
— 315-622 8XXX which blocks → VERIZON NEW YORK, INC. 9104 LIVERPOOL NY
— 315-623 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 CONSTANTIA NY
— 315-625 1XXX2XXX3XXX6XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 PARISH NY
— 315-628 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 THERESA NY
— 315-629 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 EVANSMILLS NY
— 315-633 1XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 BRIDGEPORT NY
— 315-635 0XXX which blocks → VERIZON NEW YORK, INC. 9104 BALDWINSVL NY
— 315-636 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 AMBER NY
— 315-637 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 FAYETTEVL NY
— 315-638 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 BALDWINSVL NY
— 315-640 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-642 1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 PHILA NY
— 315-644 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 NATURALBDG NY
— 315-646 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 SACKETSHBR NY
— 315-652 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 LIVERPOOL NY
— 315-656 1XXX6XXX which blocks → VERIZON NEW YORK, INC. 9104 MINOA NY
— 315-658 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 LA FARGEVL NY
— 315-659 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 ANTWERP NY
— 315-672 none assigned yet which blocks → VERIZON NEW YORK, INC. 9104 CAMILLUS NY
— 315-675 0XXX1XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 CLEVELAND NY
— 315-677 0XXX1XXX2XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 LAFAYETTE NY
— 315-683 0XXX1XXX2XXX3XXX4XXX7XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 FABIUS NY
— 315-685 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SKANEATLES NY
— 315-686 0XXX1XXX6XXX7XXX8XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 CLAYTON NY
— 315-687 0XXX1XXX4XXX8XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 CHITTENNGO NY
— 315-688 0XXX1XXX3XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 COPENHAGEN NY
— 315-689 0XXX4XXX5XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 JORDAN NY
— 315-696 0XXX1XXX2XXX3XXX4XXX7XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 TULLY NY
— 315-697 0XXX1XXX4XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 CANASTOTA NY
— 315-698 3XXX4XXX5XXX8XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 CICERO NY
— 315-699 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 CICERO NY
— 315-704 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → VERIZON NEW YORK, INC. 9104 AUBURN NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.