NumberResearch Membership · Data 09/22/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026

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 516
VERIZON NEW YORK, INC. 210
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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 516-596 5XXX7XXX8XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN03 NY
— 516-598 none assigned yet which blocks → VERIZON NEW YORK, INC. 9104 AMITYVILLE NY
— 516-599 9XXX which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN03 NY
— 516-609 5XXX7XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN04 NY
— 516-616 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN02 NY
— 516-621 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN04 NY
— 516-623 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN06 NY
— 516-624 1XXX4XXX5XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN07 NY
— 516-625 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN04 NY
— 516-626 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN04 NY
— 516-627 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN01 NY
— 516-628 5XXX6XXX7XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN07 NY
— 516-629 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN04 NY
— 516-632 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN06 NY
— 516-644 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN08 NY
— 516-656 1XXX7XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN04 NY
— 516-663 1XXX which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN05 NY
— 516-670 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN06 NY
— 516-671 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN04 NY
— 516-674 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN04 NY
— 516-676 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN04 NY
— 516-677 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN07 NY
— 516-678 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN06 NY
— 516-679 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN09 NY
— 516-681 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN08 NY
— 516-682 2XXX9XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN07 NY
— 516-683 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN05 NY
— 516-684 0XXX4XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN01 NY
— 516-686 0XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN04 NY
— 516-691 none assigned yet which blocks → VERIZON NEW YORK, INC. 9104 AMITYVILLE NY
— 516-692 1XXX which blocks → VERIZON NEW YORK, INC. 9104 COLDSPGHBR NY
— 516-694 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 FARMINGDL NY
— 516-731 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN08 NY
— 516-733 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN08 NY
— 516-735 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN08 NY
— 516-739 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN05 NY
— 516-741 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN05 NY
— 516-742 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN05 NY
— 516-745 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN05 NY
— 516-746 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN05 NY
— 516-747 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN05 NY
— 516-752 none assigned yet which blocks → VERIZON NEW YORK, INC. 9104 FARMINGDL NY
— 516-753 9XXX which blocks → VERIZON NEW YORK, INC. 9104 FARMINGDL NY
— 516-755 3XXX7XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 FARMINGDL NY
— 516-756 9XXX which blocks → VERIZON NEW YORK, INC. 9104 FARMINGDL NY
— 516-759 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN04 NY
— 516-763 8XXX which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN06 NY
— 516-764 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN06 NY
— 516-766 9XXX which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN06 NY
— 516-767 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NASSAUZN01 NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.