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 419
OHIO BELL TEL CO 114
FRONTIER NORTH, INC. - OH 114
BRIGHTSPEED OF NORTHWEST OHIO, INC. 114
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 100
NEW CINGULAR WIRELESS PCS, LLC - IL 52
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
2024-02-07 419-813 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LIMA OH
2023-08-09 419-997 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 2 holders which blocks → COMMIO, LLC 939H EDON OH
2023-08-04 419-955 0–9 XXXall 10 · 3 holders which blocks → COMMIO, LLC 939H BUCYRUS OH
2023-08-01 419-888 0XXX2XXX4XXX8XXX · 3 holders which blocks → ONVOY, LLC - OH 464C GALION OH
2023-07-28 419-856 0XXX2XXX · 2 holders which blocks → ONVOY, LLC - OH 464C WAYNESFLD OH
2023-07-26 419-820 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OH 464C TOLEDO OH
2023-07-26 419-839 0XXX1XXX2XXX3XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C TIFFIN OH
2023-07-26 419-847 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C SYLVANIA OH
2023-07-26 419-848 0XXX1XXX2XXX3XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C CASTALIA OH
2023-07-26 419-850 0XXX2XXX · 2 holders which blocks → ONVOY, LLC - OH 464C BUTLER OH
2023-07-26 419-854 0XXX2XXX · 2 holders which blocks → ONVOY, LLC - OH 464C LUCAS OH
2023-07-06 419-200 0XXX2XXX · 2 holders which blocks → ONVOY, LLC - OH 464C VANLUE OH
2023-07-06 419-317 2XXX3XXX9XXX · 3 holders which blocks → TWILIO INTERNATIONAL, INC. 506J BERLIN HTS OH
2023-06-20 419-723 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LIMA OH
2023-01-24 419-416 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 DELTA OH
2022-10-24 419-804 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LIMA OH
2022-09-01 419-926 0XXX1XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H GREENWICH OH
2021-09-22 419-415 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 LIMA OH
2021-07-09 419-814 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANSFIELD OH
2021-07-08 419-313 0XXX1XXX3XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C WEST UNITY OH
2021-07-08 419-364 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OH 464C WAYNESFLD OH
2021-04-22 419-201 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LIMA OH
2021-03-09 419-413 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 VAN WERT OH
2021-03-04 419-417 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANSFIELD OH
2020-02-05 419-904 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F COONEY OH
2019-10-03 419-314 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 FOSTORIA OH
2015-11-23 419-548 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 SPENCERVL OH
2014-04-30 419-664 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F CAREY OH
2014-04-09 419-379 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF OHIO, LLC - OH 284F FOSTORIA OH
2014-04-09 419-540 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF OHIO, LLC - OH 284F SYLVANIA OH
2014-04-08 419-432 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BETTSVILLE OH
2012-07-26 419-742 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F PUT IN BAY OH
2009-03-02 419-315 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OH 464C BOWLNGGREN OH
2009-02-03 419-717 0XXX1XXX3XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 NAPOLEON OH
2008-01-03 419-913 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OH 464C TOLEDO OH
2007-09-28 419-910 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 VAN WERT OH
2007-06-27 419-906 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 NAPOLEON OH
2007-05-24 419-907 not yet reported which blocks → GOLDSTAR COMMUNICATIONS, LLC - OH 9133 ROCKFORD OH
2007-03-14 419-890 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 OTTAWA OH
2007-03-14 419-903 not yet reported which blocks → ARMSTRONG TELECOMMUNICATIONS, INC. - OH 024E ASHLAND OH
2007-02-08 419-819 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BOWLNGGREN OH
2006-08-31 419-979 0–9 XXXall 10 · 4 holders which blocks → TIER 2 COMMUNICATIONS, LLC 8168 LIMA OH
2005-02-28 419-318 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 SYLVANIA OH
2005-02-24 419-718 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7836 CARDINGTON OH
2005-02-18 419-719 0XXX1XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BELLVILLE OH
2004-08-17 419-567 0–9 XXXall 10 · 9 holders which blocks → QUALSTAR COMMUNICATIONS, INC. - OH 2094 PAULDING OH
2004-08-17 419-632 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7836 MANSFIELD OH
2003-11-12 419-464 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J TOLEDO OH
2003-10-22 419-709 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANSFIELD OH
2003-08-28 419-765 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CLYDE OH

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.