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 740
FRONTIER NORTH, INC. - OH 123
OHIO BELL TEL CO 105
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 82
AERIAL COMMUNICATIONS, INC. 65
LEVEL 3 COMMUNICATIONS, LLC - OH 63
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
2025-08-20 740-740 0XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - OH 464C CHESAPEAKE OH
2025-01-07 740-878 0XXX8XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H BYESVILLE OH
2024-12-05 740-810 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 PATASKALA OH
2024-02-05 740-614 0XXX6XXX7XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H NEWARK OH
2024-01-04 740-907 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 ATHENS OH
2023-12-27 740-905 0XXX9XXX · 2 holders which blocks → FIVE9, INC. 598J DRESDEN OH
2023-12-14 740-904 0XXX1XXX2XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 DELAWARE OH
2023-12-04 740-903 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 ATHENS OH
2023-09-28 740-863 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LANCASTER OH
2023-08-22 740-724 1XXX which blocks → TWC IP ENABLED SERVICES, LLC 793K BARTLETT OH
2023-08-10 740-812 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 PATASKALA OH
2023-07-26 740-719 0XXX2XXX3XXX4XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 NEWARK OH
2023-07-05 740-713 0XXX1XXX2XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C MARTISFRRY OH
2023-07-05 740-714 0XXX2XXX · 2 holders which blocks → ONVOY, LLC - OH 464C KILBOURNE OH
2023-07-05 740-718 0XXX2XXX · 2 holders which blocks → ONVOY, LLC - OH 464C MILLERSPT OH
2023-06-13 740-220 0XXX1XXX8XXX9XXX · 3 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K SHAWNEE OH
2023-05-15 740-712 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OH 464C ZANESVILLE OH
2023-05-03 740-515 1XXX5XXX · 2 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K AMESVILLE OH
2023-04-11 740-813 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H ATHENS OH
2023-04-10 740-717 7XXX which blocks → ONVOY SPECTRUM, LLC 624H RADNOR OH
2023-03-23 740-514 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 NEWLXINGTN OH
2022-08-26 740-556 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BALTIMORE OH
2021-03-19 740-930 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 CIRCLEVL OH
2021-03-05 740-798 1XXX7XXX · 2 holders which blocks → STRATUS NETWORKS 495J DEXTERCITY OH
2021-01-14 740-789 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 PATASKALA OH
2020-11-24 740-793 0XXX1XXX2XXX3XXX4XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C BEAVER OH
2020-10-22 740-784 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 NEWARK OH
2020-10-02 740-790 0XXX1XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OH 464C MCARTHUR OH
2020-09-11 740-764 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 ATHENS OH
2020-01-09 740-257 0–9 XXXall 10 · 5 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 BELLAIRE OH
2019-09-25 740-234 0XXX1XXX2XXX3XXX4XXX5XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 HOPEDALE OH
2019-05-01 740-752 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F GLENFORD OH
2019-03-26 740-750 0XXX1XXX2XXX4XXX5XXX · 4 holders which blocks → CSC WIRELESS, LLC 425J LOWELL OH
2018-08-06 740-748 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 FREDERCKTN OH
2018-03-06 740-741 0XXX1XXX9XXX · 3 holders which blocks → WINDSTREAM WESTERN RESERVE, INC. 0666 LTLHOCKING OH
2017-06-14 740-729 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OH 464C ASHVILLE OH
2017-06-01 740-723 9XXX which blocks → WINDSTREAM OHIO, LLC 0665 GRATIOT OH
2017-02-01 740-640 0XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J BREMEN OH
2017-02-01 740-766 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J OSTRANDER OH
2017-01-30 740-647 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 ZANESVILLE OH
2016-12-08 740-822 0–9 XXXall 10 · 7 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K HEBRON OH
2016-10-19 740-840 0XXX1XXX2XXX3XXX8XXX9XXX · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K MURRAYCITY OH
2016-10-10 740-850 0XXX1XXX2XXX6XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C CENTERBURG OH
2016-07-13 740-672 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 CHILLICOTH OH
2016-06-06 740-889 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CIRCLEVL OH
2016-05-12 740-665 0XXX1XXX5XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - OH 464C GRATIOT OH
2016-05-11 740-873 0XXX1XXX3XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - OH 464C HANOVER OH
2016-05-11 740-880 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - OH 464C GRANVILLE OH
2016-05-11 740-890 0XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OH 464C ST LOUISVL OH
2016-05-03 740-737 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 NELSONVL 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.