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
2020-09-08 845-804 1XXX which blocks → IP HORIZON LLC 515J POUGHKEPSI NY
2020-08-27 845-785 1XXX which blocks → NUSO, LLC 478J POUGHKEPSI NY
2020-08-21 845-854 8XXX which blocks → TWILIO INTERNATIONAL, INC. 506J POUGHKEPSI NY
2020-08-04 845-560 0–9 XXXall 10 · 6 holders which blocks → HD CARRIER LLC 321J ELLENVILLE NY
2020-06-16 845-881 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC- NY 384C PATTERSON NY
2020-06-10 845-509 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 WALDEN NY
2020-06-10 845-991 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC- NY 384C BEACON NY
2020-05-28 845-385 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC- NY 384C CALLICOON NY
2020-05-11 845-801 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E MIDDLETOWN NY
2020-04-01 845-799 0–9 XXXall 10 · 6 holders which blocks → XCHANGE TELECOM CORP. - NY 325B MONROE NY
2020-03-04 845-550 0–9 XXXwhole prefix which blocks → LTE WIRELESS INC D/B/A LTE WIRELESS - NY 452J WOODSTOCK NY
2020-02-05 845-696 0–9 XXXwhole prefix which blocks → LTE WIRELESS INC D/B/A LTE WIRELESS - NY 452J AMENIA NY
2019-09-10 845-780 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → CATSKILLS COMMUNICATIONS, INC - NY 360H PHOENICIA NY
2019-08-26 845-760 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NANUET NY
2019-08-21 845-749 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SAUGERTIES NY
2019-08-21 845-755 1XXX which blocks → EXIANT COMMUNICATIONS LLC 114J POUGHKEPSI NY
2019-05-28 845-719 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 KERHONKSON NY
2019-05-23 845-844 0XXX4XXX · 2 holders which blocks → TERRA NOVA TELECOM INC. 145J POUGHKEPSI NY
2019-04-19 845-717 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WARWICK NY
2019-03-18 845-715 0–9 XXXall 10 · 6 holders which blocks → CSC WIRELESS, LLC 425J ELIZAVILLE NY
2019-02-14 845-766 0–9 XXXall 10 · 5 holders which blocks → CORETEL NEW YORK, INC. - NY 1215 ELLENVILLE NY
2019-02-14 845-829 0–9 XXXall 10 · 6 holders which blocks → CORETEL NEW YORK, INC. - NY 1215 FLEISCHMAS NY
2019-02-14 845-843 0–9 XXXall 10 · 3 holders which blocks → CORETEL NEW YORK, INC. - NY 1215 MIDDLETOWN NY
2019-02-14 845-921 0–9 XXXall 10 · 6 holders which blocks → CORETEL NEW YORK, INC. - NY 1215 NEW PALTZ NY
2019-02-14 845-927 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CORETEL NEW YORK, INC. - NY 1215 NORTHCLOVE NY
2019-02-14 845-931 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → CORETEL NEW YORK, INC. - NY 1215 TIVOLI NY
2019-02-14 845-946 0–9 XXXall 10 · 5 holders which blocks → CORETEL NEW YORK, INC. - NY 1215 COLDSPRING NY
2019-02-14 845-971 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → CORETEL NEW YORK, INC. - NY 1215 WASHIGTNVL NY
2019-02-14 845-990 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → CORETEL NEW YORK, INC. - NY 1215 MONTGOMERY NY
2018-12-07 845-740 5XXX which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 POUGHKEPSI NY
2018-10-22 845-539 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E LIBERTY NY
2018-09-26 845-846 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H NARROWSBG NY
2018-08-29 845-479 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MIDDLETOWN NY
2018-06-18 845-850 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H POUGHKEPSI NY
2018-06-12 845-506 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC- NY 384C PORTJERVIS NY
2018-06-12 845-604 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC- NY 384C MONROE NY
2018-05-03 845-415 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC- NY 384C SCOTCHTOWN NY
2018-02-20 845-409 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC- NY 384C SHOKAN NY
2018-02-15 845-410 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E HIGH FALLS NY
2017-12-19 845-779 0–9 XXXall 10 · 5 holders which blocks → VONAGE AMERICA LLC 197D NEWBURGH NY
2017-08-28 845-407 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E HYDE PARK NY
2017-07-28 845-390 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 SUFFERN NY
2017-03-23 845-880 0XXX6XXX7XXX8XXX · 2 holders which blocks → COMMIO, LLC 939H POUGHKEPSI NY
2017-03-07 845-413 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 CARMEL NY
2017-03-07 845-822 0–9 XXXall 10 · 8 holders which blocks → TELNYX LLC 073H CORNWALL NY
2017-03-07 845-836 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → TELNYX LLC 073H WAPIGRSFLS NY
2016-12-05 845-404 0XXX1XXX8XXX9XXX · 2 holders which blocks → TELNYX LLC 073H POUGHKEPSI NY
2016-09-23 845-904 0XXX1XXX2XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC- NY 384C CLINTONDL NY
2016-09-22 845-969 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC- NY 384C STANFORDVL NY
2016-09-16 845-310 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC- NY 384C WINGDALE 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.