NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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
2012-09-27 845-328 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E ESOPUS NY
2012-08-30 845-686 0XXX1XXX2XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J POUGHKEPSI NY
2012-07-30 845-388 1XXX3XXX4XXX9XXX · 4 holders which blocks → BARR TELL USA, INC. - NY 525G POUGHKEPSI NY
2012-07-17 845-660 0–9 XXXall 10 · 7 holders which blocks → AT&T - LOCAL 7421 AMENIA NY
2012-06-26 845-640 0–9 XXXall 10 · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 FALLSBURG NY
2012-04-18 845-301 0–9 XXXwhole prefix which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E SUFFERN NY
2012-04-18 845-302 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J BREWSTER NY
2012-03-29 845-448 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → TC SYSTEMS, INC. - NY 7140 ROSENDALE NY
2012-03-02 845-414 0–9 XXXall 10 · 7 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 SPRING VLY NY
2012-03-02 845-663 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 KINGSTON NY
2012-02-01 845-767 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E CONGERS NY
2011-11-25 845-422 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NEW CITY NY
2011-11-16 845-670 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 NEWBURGH NY
2011-10-14 845-275 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NEWBURGH NY
2011-08-24 845-322 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J HIGHLD FLS NY
2011-07-19 845-262 0–9 XXXall 10 · 7 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 SPRING VLY NY
2011-05-12 845-443 0–9 XXXall 10 · 7 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 KINGSTON NY
2011-04-12 845-260 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 MAHOPAC NY
2011-03-23 845-280 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E PHOENICIA NY
2011-03-04 845-263 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NEW CITY NY
2010-12-28 845-655 0–9 XXXall 10 · 7 holders which blocks → FRONTIER COMMUNICATIONS OF NEW YORK, INC. 0100 MONROE NY
2010-12-22 845-250 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K WHITE LAKE NY
2010-12-22 845-251 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K SHOKAN NY
2010-12-22 845-253 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K KERHONKSON NY
2010-12-16 845-245 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K NEWBURGH NY
2010-11-04 845-243 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC- NY 384C POUGHKEPSI NY
2010-10-12 845-219 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NEWBURGH NY
2010-09-16 845-241 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E HAVERSTRAW NY
2010-07-22 845-237 0–9 XXXall 10 · 7 holders which blocks → WARWICK VALLEY TELEPHONE COMPANY 4967 CORNWALL NY
2010-07-16 845-333 0–9 XXXwhole prefix which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 MIDDLETOWN NY
2010-07-13 845-244 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E CLINTONDL NY
2010-06-29 845-232 0–9 XXXall 10 · 5 holders which blocks → CSC VOICE, LLC 612K POUGHKEPSI NY
2010-05-28 845-217 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E SAUGERTIES NY
2010-05-28 845-218 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E WAPIGRSFLS NY
2010-05-06 845-213 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NEW CITY NY
2010-04-26 845-645 0–9 XXXall 10 · 4 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 MIDDLETOWN NY
2010-04-26 845-648 0–9 XXXall 10 · 7 holders which blocks → FRONTIER COMMUNICATIONS OF AMERICA, INC. - NY 2475 MIDDLETOWN NY
2010-03-22 845-377 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E HIGH FALLS NY
2010-03-22 845-379 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E CLINTONCOR NY
2010-03-22 845-393 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E MARLBORO NY
2010-03-02 845-200 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 CARMEL NY
2010-03-02 845-204 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CSC VOICE, LLC 612K POUGHKEPSI NY
2010-02-11 845-202 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E BEACON NY
2009-12-14 845-554 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E POUGHKEPSI NY
2009-08-11 845-395 0–9 XXXall 10 · 6 holders which blocks → WARWICK VALLEY TELEPHONE COMPANY 4967 MONROE NY
2009-07-22 845-500 0–9 XXXall 10 · 2 holders which blocks → FRONTIER COMMUNICATIONS OF AMERICA, INC. - NY 2475 MONROE NY
2009-06-10 845-397 0–9 XXXall 10 · 6 holders which blocks → TC SYSTEMS, INC. - NY 7140 MONTICELLO NY
2009-04-28 845-666 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J COLDSPRING NY
2009-04-13 845-418 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 POUGHKEPSI NY
2009-03-19 845-391 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NEWBURGH NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.