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
Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 315-670 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 WATERLOO NY
— 315-671 not yet reported which blocks → NORTHLAND NETWORKS, LTD. - NY 7556 SYRACUSE NY
— 315-672 none assigned yet which blocks → VERIZON NEW YORK, INC. 9104 CAMILLUS NY
— 315-673 5XXX6XXX7XXX · 3 holders which blocks → WINDSTREAM NEW YORK, INC. - FULTON 0106 MARCELLUS NY
— 315-674 0XXX4XXX9XXX · 3 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K NICHOLVL NY
— 315-675 0XXX1XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 CLEVELAND NY
— 315-676 0XXX6XXX8XXX · 3 holders which blocks → WINDSTREAM NEW YORK, INC. - FULTON 0106 CENTRAL SQ NY
— 315-677 0XXX1XXX2XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 LAFAYETTE NY
— 315-678 0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 LYSANDER NY
— 315-681 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 WATERTOWN NY
— 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

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.