NumberResearch Membership · Data 09/23/2026

Recent prefix assignments

338 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/23/2026

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. 39
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 15
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
— 716-731 not yet reported which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 SANBORN NY
— 716-735 0XXX1XXX2XXX4XXX5XXX8XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 MIDDLEPORT NY
— 716-736 not yet reported which blocks → CHAUTAUQUA & ERIE TEL. CORP. 0078 RIPLEY NY
— 716-740 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → ONVOY, LLC- NY 384C ORCHARD PK NY
— 716-741 6XXX which blocks → VERIZON NEW YORK, INC. 9104 CLARENCCTR NY
— 716-743 6XXX which blocks → VERIZON NEW YORK, INC. 9104 TONAWANDA NY
— 716-744 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 TONAWANDA NY
— 716-745 0XXX1XXX2XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 YOUNGSTOWN NY
— 716-751 0XXX1XXX2XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 WILSON NY
— 716-753 none assigned yet which blocks → CHAUTAUQUA & ERIE TEL. CORP. 0078 MAYVILLE NY
— 716-754 3XXX6XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 LEWISTON NY
— 716-759 3XXX4XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 CLARENCE NY
— 716-761 not yet reported which blocks → CHAUTAUQUA & ERIE TEL. CORP. 0078 SHERMAN NY
— 716-763 not yet reported which blocks → WINDSTREAM NEW YORK, INC. - JAMESTOWN 0109 LAKEWOOD NY
— 716-765 0XXX2XXX3XXX4XXX5XXX6XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 LYNDONVL NY
— 716-769 not yet reported which blocks → CHAUTAUQUA & ERIE TEL. CORP. 0078 FINDLEY LK NY
— 716-772 0XXX1XXX3XXX4XXX6XXX8XXX9XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 GASPORT NY
— 716-773 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 GRAND IS NY
— 716-774 4XXX5XXX7XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 GRAND IS NY
— 716-775 2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 GRAND IS NY
— 716-778 1XXX2XXX3XXX4XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 NEWFANE NY
— 716-780 0–9 XXXall 10 · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 ANGOLA NY
— 716-782 0XXX6XXX7XXX8XXX · 4 holders which blocks → WINDSTREAM NEW YORK, INC. - JAMESTOWN 0109 PANAMA NY
— 716-789 6XXX7XXX8XXX · 3 holders which blocks → WINDSTREAM NEW YORK, INC. - JAMESTOWN 0109 STEDMAN NY
— 716-790 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → AT&T - LOCAL 7421 OLEAN NY
— 716-791 1XXX2XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 RANSOMVL NY
— 716-792 not yet reported which blocks → CHAUTAUQUA & ERIE TEL. CORP. 0078 BROCTON NY
— 716-793 not yet reported which blocks → CHAUTAUQUA & ERIE TEL. CORP. 0078 WESTFIELD NY
— 716-794 0XXX1XXX2XXX3XXX4XXX5XXX7XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J SPRINGVL NY
— 716-795 0XXX2XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 BARKER NY
— 716-796 1XXX3XXX4XXX5XXX7XXX8XXX9XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 BUFFALO NY
— 716-798 1XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J MEDINA NY
— 716-799 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 TONAWANDA NY
— 716-800 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC- NY 384C BUFFALO NY
— 716-803 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BUFFALO NY
— 716-804 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 NIAGARAFLS NY
— 716-805 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J EASTAURORA NY
— 716-806 1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC- NY 384C OLEAN NY
— 716-807 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 TONAWANDA NY
— 716-809 0–9 XXXall 10 · 3 holders which blocks → TC SYSTEMS, INC. - NY 7140 WESTSENECA NY
— 716-810 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 WILLIAMSVL NY
— 716-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 716-812 none assigned yet which blocks → METROPCS, INC. 5562 BUFFALO NY
— 716-816 3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 BUFFALO NY
— 716-817 0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J WILLIAMSVL NY
— 716-819 6XXX7XXX8XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 BUFFALO NY
— 716-821 2XXX3XXX8XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 BUFFALO NY
— 716-822 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 BUFFALO NY
— 716-823 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 BUFFALO NY
— 716-824 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 BUFFALO NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.