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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 845-223 not yet reported which blocks → FRONTIER COMMUNICATIONS OF SYLVAN LAKE, INC. 0128 HOPEWLLJCT NY
— 845-225 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 CARMEL NY
— 845-226 not yet reported which blocks → FRONTIER COMMUNICATIONS OF SYLVAN LAKE, INC. 0128 HOPEWLLJCT NY
— 845-227 not yet reported which blocks → FRONTIER COMMUNICATIONS OF SYLVAN LAKE, INC. 0128 HOPEWLLJCT NY
— 845-228 3XXX6XXX8XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 CARMEL NY
— 845-229 3XXX which blocks → VERIZON NEW YORK, INC. 9104 HYDE PARK NY
— 845-230 not yet reported which blocks → PAETEC ITEL, LLC 829J BREWSTER NY
— 845-231 not yet reported which blocks → PAETEC ITEL, LLC 829J BEACON NY
— 845-235 0–9 XXXall 10 · 3 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 POUGHKEPSI NY
— 845-236 0XXX1XXX2XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 MARLBORO NY
— 845-240 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J POUGHKEPSI NY
— 845-246 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SAUGERTIES NY
— 845-247 1XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 SAUGERTIES NY
— 845-252 0XXX1XXX4XXX5XXX8XXX · 5 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 NARROWSBG NY
— 845-254 0XXX1XXX2XXX3XXX7XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 FLEISCHMAS NY
— 845-255 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 NEW PALTZ NY
— 845-256 5XXX6XXX7XXX8XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 NEW PALTZ NY
— 845-257 not yet reported which blocks → PAETEC ITEL, LLC 829J NEW PALTZ NY
— 845-258 none assigned yet which blocks → ALTEVA OF WARWICK LLC 0135 PINEISLAND NY
— 845-259 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7650 BREWSTER NY
— 845-265 0XXX1XXX6XXX8XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 COLDSPRING NY
— 845-266 0XXX1XXX2XXX6XXX7XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 CLINTONCOR NY
— 845-267 1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 CONGERS NY
— 845-268 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 CONGERS NY
— 845-276 0XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 CROTON FLS NY
— 845-277 0XXX2XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC- NY 384C CROTON FLS NY
— 845-278 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 BREWSTER NY
— 845-279 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 BREWSTER NY
— 845-282 5XXX7XXX8XXX · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 CARMEL NY
— 845-283 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MIDDLETOWN NY
— 845-284 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7650 LAKELAND NY
— 845-285 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J MILLBROOK NY
— 845-291 not yet reported which blocks → FRONTIER COMMUNICATIONS OF NEW YORK, INC. 0100 GOSHEN NY
— 845-292 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 LIBERTY NY
— 845-294 not yet reported which blocks → FRONTIER COMMUNICATIONS OF NEW YORK, INC. 0100 GOSHEN NY
— 845-295 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 LIBERTY NY
— 845-296 5XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 WAPIGRSFLS NY
— 845-297 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WAPIGRSFLS NY
— 845-298 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WAPIGRSFLS NY
— 845-300 not yet reported which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 SPRING VLY NY
— 845-304 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NEW CITY NY
— 845-306 2XXX6XXX7XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 CARMEL NY
— 845-308 not yet reported which blocks → DIAL-A-BEEPER, INC. 6871 SPRING VLY NY
— 845-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 845-312 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 XXXXXXXXXX NY
— 845-314 not yet reported which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 NYACK NY
— 845-316 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC- NY 384C BLOOMINGBG NY
— 845-318 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E POUGHKEPSI NY
— 845-319 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 PATTERSON NY
— 845-320 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E POUGHKEPSI 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.