NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

337 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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 25
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 12
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
— 845-679 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WOODSTOCK NY
— 845-680 6XXX9XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 PIERMONT NY
— 845-687 1XXX3XXX6XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 HIGH FALLS NY
— 845-688 0XXX1XXX3XXX4XXX6XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 PHOENICIA NY
— 845-691 0XXX1XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 HIGHLAND NY
— 845-692 not yet reported which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 SCOTCHTOWN NY
— 845-693 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K FALLSBURG NY
— 845-695 not yet reported which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 SCOTCHTOWN NY
— 845-700 not yet reported which blocks → NY
— 845-703 0XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → WARWICK VALLEY TELEPHONE COMPANY - NY 4140 SCOTCHTOWN NY
— 845-704 1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 CARMEL NY
— 845-708 5XXX9XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 NEW CITY NY
— 845-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 845-714 0XXX1XXX2XXX3XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC- NY 384C POUGHKEPSI NY
— 845-723 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K PLEASATVLY NY
— 845-724 0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → VERIZON NEW YORK, INC. 9104 NORTHCLOVE NY
— 845-725 not yet reported which blocks → PAETEC ITEL, LLC 829J NEWBURGH NY
— 845-726 1XXX2XXX6XXX7XXX8XXX · 4 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 UNIONVILLE NY
— 845-727 3XXX5XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 NYACK NY
— 845-730 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC- NY 384C FALLSBURG NY
— 845-731 1XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 PEARLRIVER NY
— 845-732 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 PEARLRIVER NY
— 845-733 8XXX which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 BLOOMINGBG NY
— 845-734 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 PEEKSKILL NY
— 845-735 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 PEARLRIVER NY
— 845-736 0–9 XXXall 10 · 4 holders which blocks → CSC VOICE, LLC 612K PEEKSKILL NY
— 845-737 2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 PEEKSKILL NY
— 845-739 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 PEEKSKILL NY
— 845-744 0XXX which blocks → FRONTIER COMMUNICATIONS OF NEW YORK, INC. 0100 PINE BUSH NY
— 845-747 0–9 XXXall 10 · 7 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K LIBERTY NY
— 845-752 0XXX1XXX3XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 RED HOOK NY
— 845-753 0XXX3XXX4XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 SLOATSBURG NY
— 845-754 1XXX2XXX3XXX4XXX5XXX6XXX · 2 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 PORTJERVIS NY
— 845-756 0XXX1XXX6XXX7XXX8XXX · 4 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 ELIZAVILLE NY
— 845-757 0XXX1XXX6XXX7XXX8XXX · 3 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 TIVOLI NY
— 845-758 not yet reported which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 RED HOOK NY
— 845-759 9XXX which blocks → VERIZON NEW YORK, INC. 9104 SLOATSBURG NY
— 845-761 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 PIERMONT NY
— 845-770 4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J NYACK NY
— 845-774 none assigned yet which blocks → FRONTIER COMMUNICATIONS OF NEW YORK, INC. 0100 MONROE NY
— 845-777 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC- NY 384C SUFFERN NY
— 845-778 not yet reported which blocks → FRONTIER COMMUNICATIONS OF NEW YORK, INC. 0100 WALDEN NY
— 845-781 none assigned yet which blocks → FRONTIER COMMUNICATIONS OF NEW YORK, INC. 0100 MONROE NY
— 845-782 not yet reported which blocks → FRONTIER COMMUNICATIONS OF NEW YORK, INC. 0100 MONROE NY
— 845-783 not yet reported which blocks → FRONTIER COMMUNICATIONS OF NEW YORK, INC. 0100 MONROE NY
— 845-786 9XXX which blocks → VERIZON NEW YORK, INC. 9104 HAVERSTRAW NY
— 845-788 0XXX2XXX5XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 PEEKSKILL NY
— 845-790 not yet reported which blocks → PAETEC ITEL, LLC 829J POUGHKEPSI NY
— 845-791 0XXX3XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 MONTICELLO NY
— 845-794 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 MONTICELLO NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.