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
— 315-725 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
— 315-737 1XXX2XXX3XXX4XXX6XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 UTICA NY
— 315-738 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 UTICA NY
— 315-739 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 UTICA NY
— 315-742 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → VERIZON NEW YORK, INC. 9104 POTSDAM NY
— 315-743 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 BALDWINSVL NY
— 315-746 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 OSWEGO NY
— 315-747 not yet reported which blocks → CONTACT COMMUNICATIONS, INC. 4721 MADRID NY
— 315-749 0XXX1XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J UTICA NY
— 315-750 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 HAMILTON NY
— 315-752 3XXX5XXX6XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J CICERO NY
— 315-754 0XXX1XXX3XXX4XXX5XXX7XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 RED CREEK NY
— 315-756 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K BELLEVILLE NY
— 315-761 0XXX1XXX2XXX3XXX4XXX6XXX7XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SYLVAN BCH NY
— 315-762 0XXX1XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 SYLVAN BCH NY
— 315-763 4XXX9XXX · 2 holders which blocks → PEERING HUB, INC. - NY 818H FORESTPORT NY
— 315-764 8XXX which blocks → VERIZON NEW YORK, INC. 9104 MASSENA NY
— 315-765 0XXX1XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 UTICA NY
— 315-767 1XXX2XXX3XXX4XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WATERTOWN NY
— 315-768 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 UTICA NY
— 315-769 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 MASSENA NY
— 315-770 not yet reported which blocks → PAETEC ITEL, LLC 829J SYRACUSE NY
— 315-771 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WATERTOWN NY
— 315-772 not yet reported which blocks → TC SYSTEMS, INC. - NY 7140 WATERTOWN NY
— 315-773 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WATERTOWN NY
— 315-774 not yet reported which blocks → TC SYSTEMS, INC. - NY 7140 WATERTOWN NY
— 315-775 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → VERIZON NEW YORK, INC. 9104 WATERTOWN NY
— 315-776 1XXX2XXX3XXX7XXX · 3 holders which blocks → PORT BYRON TEL. CO. 0118 PORT BYRON NY
— 315-778 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WATERTOWN NY
— 315-779 0XXX4XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 WATERTOWN NY
— 315-780 0XXX1XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 OLD FORGE NY
— 315-781 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 GENEVA NY
— 315-782 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WATERTOWN NY
— 315-783 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WATERTOWN NY
— 315-784 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 OWASCO NY
— 315-785 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WATERTOWN NY
— 315-786 9XXX which blocks → VERIZON NEW YORK, INC. 9104 WATERTOWN NY
— 315-787 0XXX1XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 GENEVA NY
— 315-788 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WATERTOWN NY
— 315-789 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 GENEVA NY
— 315-790 4XXX5XXX6XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 UTICA 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.