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
— 315-737 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
— 315-792 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 UTICA NY
— 315-793 7XXX which blocks → VERIZON NEW YORK, INC. 9104 UTICA NY
— 315-794 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 UTICA NY
— 315-796 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 UTICA NY
— 315-797 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 UTICA NY
— 315-798 7XXX which blocks → VERIZON NEW YORK, INC. 9104 UTICA NY
— 315-799 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 UTICA NY
— 315-800 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC- NY 384C SYRACUSE NY
— 315-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 315-812 0XXX1XXX2XXX3XXX6XXX8XXX · 4 holders which blocks → NORTHLAND NETWORKS, LTD. - NY 7556 SODUS 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.