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
— 740-245 1XXX2XXX3XXX4XXX6XXX · 3 holders which blocks → OHIO BELL TEL CO 9321 RIO GRANDE OH
— 740-246 0XXX7XXX which blocks → OHIO BELL TEL CO 9321 THORNVILLE OH
— 740-247 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → FRONTIER NORTH, INC. - OH 0615 LETART FLS OH
— 740-248 0XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 CIRCLEVL OH
— 740-250 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 PORTSMOUTH OH
— 740-252 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 ZANESVILLE OH
— 740-253 3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → METROPCS, INC. 5562 CHILLICOTH OH
— 740-254 8XXX which blocks → OHIO BELL TEL CO 9321 GNADENHTTN OH
— 740-255 1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 CAMBRIDGE OH
— 740-256 0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → OHIO BELL TEL CO 9321 GUYAN OH
— 740-258 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 NEWARK OH
— 740-259 7XXX which blocks → FRONTIER NORTH, INC. - OH 0615 PORTSMOUTH OH
— 740-264 not yet reported which blocks → OHIO BELL TEL CO 9321 STEUBENVL OH
— 740-266 not yet reported which blocks → OHIO BELL TEL CO 9321 STEUBENVL OH
— 740-269 5XXX which blocks → FRONTIER NORTH, INC. - OH 0615 BOWERSTON OH
— 740-272 4XXX5XXX9XXX · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 DELAWARE OH
— 740-275 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J STEUBENVL OH
— 740-276 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OH 464C NEVADA OH
— 740-277 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → OHIO BELL TEL CO 9321 LANCASTER OH
— 740-278 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 STEUBENVL OH
— 740-282 not yet reported which blocks → OHIO BELL TEL CO 9321 STEUBENVL OH
— 740-283 9XXX which blocks → OHIO BELL TEL CO 9321 STEUBENVL OH
— 740-284 2XXX4XXX6XXX8XXX9XXX · 2 holders which blocks → OHIO BELL TEL CO 9321 STEUBENVL OH
— 740-285 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 PORTSMOUTH OH
— 740-286 not yet reported which blocks → FRONTIER NORTH, INC. - OH 0615 JACKSON OH
— 740-288 8XXX which blocks → FRONTIER NORTH, INC. - OH 0615 JACKSON OH
— 740-289 7XXX which blocks → FRONTIER NORTH, INC. - OH 0615 PIKETON OH
— 740-290 not yet reported which blocks → SOUTHERN OHIO COMMUN SERVICES, INC. 6700 WAVERLY OH
— 740-295 8XXX9XXX · 2 holders which blocks → OHIO BELL TEL CO 9321 COSHOCTON OH
— 740-296 1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → METROPCS, INC. 5562 STCLAIRSVL OH
— 740-297 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ZANESVILLE OH
— 740-298 4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 STCLAIRSVL OH
— 740-302 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F IRONTON OH
— 740-310 5XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 STCLAIRSVL OH
— 740-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 740-312 1XXX7XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 STCLAIRSVL OH
— 740-317 8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 STEUBENVL OH
— 740-319 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ZANESVILLE OH
— 740-321 not yet reported which blocks → WINDSTREAM OHIO, LLC 0665 GRANVILLE OH
— 740-322 4XXX which blocks → WINDSTREAM OHIO, LLC 0665 NEWARK OH
— 740-323 6XXX7XXX · 2 holders which blocks → WINDSTREAM OHIO, LLC 0665 NEWARK OH
— 740-325 0–9 XXXall 10 · 7 holders which blocks → COMCAST IP PHONE, LLC 318J BELLAIRE OH
— 740-327 0XXX3XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - OH 0615 COOPERDALE OH
— 740-328 7XXX9XXX which blocks → WINDSTREAM OHIO, LLC 0665 NEWARK OH
— 740-329 0XXX1XXX4XXX8XXX9XXX · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CARROLL OH
— 740-330 0–9 XXXall 10 · 7 holders which blocks → PAETEC ITEL, LLC 829J BETHESDA OH
— 740-332 5XXX which blocks → FRONTIER NORTH, INC. - OH 0615 LAURELVL OH
— 740-333 8XXX9XXX which blocks → OHIO BELL TEL CO 9321 WSNGTNCTHS OH
— 740-335 not yet reported which blocks → OHIO BELL TEL CO 9321 WSNGTNCTHS OH
— 740-338 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 STCLAIRSVL 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.