NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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
PAETEC ITEL, LLC 59
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 58
NEW CINGULAR WIRELESS PCS, LLC - DC 45
TC SYSTEMS, INC. - NY 35
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
— 518-422 not yet reported which blocks → SPOK, INC. 6630 ALBANY NY
— 518-423 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ALBANY NY
— 518-424 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBANY NY
— 518-425 1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 BRAINADSVL NY
— 518-426 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-427 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-428 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ALBANY NY
— 518-429 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 ALBANY NY
— 518-430 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 SARATOGSPG NY
— 518-431 9XXX which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-432 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-433 9XXX which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-434 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-435 4XXX5XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-436 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-437 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-438 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-439 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 ALBANY NY
— 518-441 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBANY NY
— 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

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.