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 315
VERIZON NEW YORK, INC. 216
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 78
PAETEC ITEL, LLC 63
TWC IP ENABLED SERVICES, LLC 46
NEW CINGULAR WIRELESS PCS, LLC - DC 46
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
— 315-682 not yet reported which blocks → WINDSTREAM NEW YORK, INC. - FULTON 0106 MANLIUS NY
— 315-683 0XXX1XXX2XXX3XXX4XXX7XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 FABIUS NY
— 315-684 1XXX2XXX4XXX6XXX8XXX · 4 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 MORRISVL 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
— 315-691 0XXX1XXX7XXX8XXX · 4 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 EARLVILLE NY
— 315-692 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K MANLIUS NY
— 315-693 3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J ONEIDA NY
— 315-694 4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PENN YAN NY
— 315-695 not yet reported which blocks → WINDSTREAM NEW YORK, INC. - FULTON 0106 PHOENIX 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
— 315-700 not yet reported which blocks → NY
— 315-701 not yet reported which blocks → PAETEC ITEL, LLC 829J SYRACUSE NY
— 315-702 3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J AUBURN NY
— 315-703 not yet reported which blocks → PAETEC ITEL, LLC 829J SYRACUSE NY
— 315-704 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → VERIZON NEW YORK, INC. 9104 AUBURN NY
— 315-705 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 MASSENA NY
— 315-706 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-707 0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 SKANEATLES NY
— 315-708 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 SYRACUSE NY
— 315-709 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 ROME NY
— 315-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 315-712 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 SENECA FLS NY
— 315-713 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC- NY 384C OGDENSBURG NY
— 315-714 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 CANTON NY
— 315-715 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 LIVERPOOL NY
— 315-716 0XXX1XXX2XXX7XXX8XXX9XXX · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J GENEVA NY
— 315-717 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 HERKIMER NY
— 315-719 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 GENEVA NY
— 315-720 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → VERIZON NEW YORK, INC. 9104 BALDWINSVL NY
— 315-721 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 UTICA NY
— 315-722 not yet reported which blocks → SPOK, INC. 6630 UTICA NY
— 315-723 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 UTICA NY
— 315-724 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 UTICA NY
— 315-725 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 UTICA NY
— 315-727 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 SYRACUSE NY
— 315-729 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 SYRACUSE NY
— 315-730 6XXX7XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 AUBURN NY
— 315-731 0XXX7XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 UTICA NY
— 315-732 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 UTICA NY
— 315-733 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 UTICA NY
— 315-734 5XXX which blocks → VERIZON NEW YORK, INC. 9104 UTICA NY
— 315-735 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 UTICA NY
— 315-736 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 UTICA 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.