NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 845
VERIZON NEW YORK, INC. 159
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 73
ONVOY, LLC- NY 58
NEW CINGULAR WIRELESS PCS, LLC - DC 47
LEVEL 3 COMMUNICATIONS, LLC - NY 47
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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 845-863 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 NEWBURGH NY
— 845-865 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC- NY 384C PLEASATVLY NY
— 845-867 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 POUGHKEPSI NY
— 845-868 0XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 STANFORDVL NY
— 845-871 0XXX2XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 RHINEBECK NY
— 845-875 2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 NYACK NY
— 845-876 not yet reported which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 RHINEBECK NY
— 845-877 0XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 DOVER PL NY
— 845-878 0XXX1XXX5XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 PATTERSON NY
— 845-883 0XXX2XXX3XXX4XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 CLINTONDL NY
— 845-884 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 KINGSTON NY
— 845-887 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 CALLICOON NY
— 845-888 1XXX6XXX7XXX · 2 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 WURTSBORO NY
— 845-889 0XXX1XXX2XXX5XXX6XXX7XXX · 4 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 STAATSBURG NY
— 845-890 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 XXXXXXXXXX NY
— 845-892 not yet reported which blocks → TC SYSTEMS, INC. - NY 7140 BEACON NY
— 845-893 none assigned yet which blocks → METROPCS, INC. 5562 NEW CITY NY
— 845-894 not yet reported which blocks → TC SYSTEMS, INC. - NY 7140 BEACON NY
— 845-895 none assigned yet which blocks → FRONTIER COMMUNICATIONS OF NEW YORK, INC. 0100 WALLKILL NY
— 845-896 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 BEACON NY
— 845-897 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 BEACON NY
— 845-899 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J HOPEWLLJCT NY
— 845-902 0XXX3XXX8XXX · 2 holders which blocks → FRONTIER COMMUNICATIONS OF AMERICA, INC. - NY 2475 POUGHKEPSI NY
— 845-905 2XXX5XXX6XXX9XXX which blocks → VERIZON NEW YORK, INC. 9104 POUGHKEPSI NY
— 845-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 845-913 2XXX3XXX4XXX5XXX6XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J NEWBURGH NY
— 845-915 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 TUXEDO NY
— 845-918 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → VERIZON NEW YORK, INC. 9104 SUFFERN NY
— 845-920 1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → VERIZON NEW YORK, INC. 9104 PEARLRIVER NY
— 845-926 0XXX1XXX2XXX6XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J NEWBURGH NY
— 845-928 not yet reported which blocks → FRONTIER COMMUNICATIONS OF NEW YORK, INC. 0100 HIGHLANDML NY
— 845-932 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 LKHUNTIGTN NY
— 845-938 0XXX1XXX9XXX which blocks → PAETEC ITEL, LLC 829J HIGHLD FLS NY
— 845-940 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 BREWSTER NY
— 845-942 6XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 HAVERSTRAW NY
— 845-943 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J KINGSTON NY
— 845-945 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC- NY 384C CARMEL NY
— 845-947 0XXX7XXX8XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 HAVERSTRAW NY
— 845-950 not yet reported which blocks → NY
— 845-955 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 XXXXXXXXXX NY
— 845-956 0XXX3XXX6XXX7XXX8XXX · 4 holders which blocks → WARWICK VALLEY TELEPHONE COMPANY - NY 4140 MIDDLETOWN NY
— 845-958 not yet reported which blocks → NY
— 845-959 not yet reported which blocks → NY
— 845-976 not yet reported which blocks → MULTIPLE OCN LISTING MULT BREWSTER NY
— 845-977 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 HIGHLD FLS NY
— 845-985 1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 GRAHAMSVL NY
— 845-986 not yet reported which blocks → ALTEVA OF WARWICK LLC 0135 WARWICK NY
— 845-987 none assigned yet which blocks → ALTEVA OF WARWICK LLC 0135 WARWICK NY
— 845-988 none assigned yet which blocks → ALTEVA OF WARWICK LLC 0135 WARWICK NY
— 845-999 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC- NY 384C NEW CITY NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.