NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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, last 30 days
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
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
— 315-443 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-445 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-446 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-447 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SYRACUSE NY
— 315-448 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-449 6XXX7XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-451 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-452 6XXX which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-453 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-454 1XXX2XXX7XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-455 0XXX which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-456 8XXX9XXX which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-457 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-458 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-459 1XXX3XXX6XXX7XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-460 0XXX5XXX6XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-461 7XXX which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-462 not yet reported which blocks → ONTARIO TELEPHONE COMPANY, INC. 0112 CLIFTONSPG NY
— 315-463 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-464 0XXX which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-465 0XXX1XXX2XXX9XXX which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 MANNSVILLE NY
— 315-466 1XXX2XXX3XXX4XXX6XXX8XXX9XXX which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-467 not yet reported which blocks → SPOK, INC. 6630 SYRACUSE NY
— 315-468 7XXX which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-469 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-470 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-471 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-472 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-473 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-474 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-475 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-476 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-477 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-478 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-479 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-480 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SYRACUSE NY
— 315-481 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 SYRACUSE NY
— 315-482 0XXX7XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 ALEXNDRIBY NY
— 315-483 7XXX which blocks → VERIZON NEW YORK, INC. 9104 SODUS NY
— 315-484 0XXX1XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-485 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-486 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WATERTOWN NY
— 315-487 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-488 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-489 0XXX2XXX5XXX7XXX8XXX · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 WATERTOWN NY
— 315-490 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 SYRACUSE NY
— 315-492 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-493 8XXX which blocks → VERIZON NEW YORK, INC. 9104 CARTHAGE NY
— 315-495 3XXX7XXX8XXX · 3 holders which blocks → WINDSTREAM NEW YORK, INC. - FULTON 0106 MUNNSVILLE NY
— 315-496 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 SEMPRONIUS NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.