NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 27
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
New assignments by month Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 518-442 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-443 9XXX which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-445 4XXX5XXX8XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-446 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-447 9XXX which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-449 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-450 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J SARATOGSPG NY
— 518-451 0XXX6XXX9XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-452 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 COLONIE NY
— 518-453 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-454 9XXX which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-455 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-456 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 COLONIE NY
— 518-457 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-458 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-459 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-461 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBANY NY
— 518-462 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-463 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-464 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 COLONIE NY
— 518-465 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-466 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ALBANY NY
— 518-469 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBANY NY
— 518-470 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 ALBANY NY
— 518-471 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-472 0XXX9XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-473 not yet reported which blocks → PAETEC ITEL, LLC 829J ALBANY NY
— 518-474 not yet reported which blocks → PAETEC ITEL, LLC 829J ALBANY NY
— 518-475 8XXX which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-476 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-477 0XXX3XXX which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-478 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-479 1XXX2XXX5XXX7XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-480 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J GLENSFALLS NY
— 518-481 0XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 MALONE NY
— 518-482 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-483 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 MALONE NY
— 518-484 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 ALBANY NY
— 518-485 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-486 0XXX8XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-487 0XXX1XXX4XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-488 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-489 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-490 0XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J BALLSTNSPA NY
— 518-492 0XXX1XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 DANNEMORA NY
— 518-493 not yet reported which blocks → CHAZY & WESTPORT TEL. CORP. 0079 WEST CHAZY NY
— 518-494 8XXX which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 CHESTERTN NY
— 518-495 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ALBANY NY
— 518-496 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ALBANY NY
— 518-497 0XXX1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 8 holders which blocks → VERIZON NEW YORK, INC. 9104 CHATEAUGAY NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.