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 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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2001-07-23 419-702 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K MARBLEHEAD OH
2001-06-29 419-857 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K NO BALTIMR OH
2001-05-31 419-434 0XXX1XXX9XXX · 2 holders which blocks → OHIO BELL TEL CO 9321 FINDLAY OH
2001-05-31 419-631 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MANSFIELD OH
2001-05-29 419-921 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → FRONTIER NORTH, INC. - OH 0615 NORWALK OH
2001-05-29 419-922 1XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → FRONTIER NORTH, INC. - OH 0615 HAYESVILLE OH
2001-05-29 419-928 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 POLK OH
2001-05-29 419-951 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 WILLARD OH
2001-05-29 419-953 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CELINA OH
2001-05-29 419-954 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 NEW BREMEN OH
2001-05-18 419-550 1XXX2XXX5XXX7XXX8XXX · 4 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 GRELTNMLNT OH
2001-05-18 419-580 1XXX2XXX8XXX · 3 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 OLD FORT OH
2001-05-18 419-590 6XXX7XXX9XXX · 3 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 WAUSEON OH
2001-05-18 419-604 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LIMA OH
2001-05-18 419-605 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 VAN WERT OH
2001-05-18 419-670 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → WINDSTREAM OHIO, LLC 0665 PAULDING OH
2001-05-17 419-558 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 ADA OH
2001-05-08 419-656 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 SANDUSKY OH
2001-04-27 419-779 2XXX3XXX4XXX5XXX8XXX9XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TOLEDO OH
2001-04-26 419-556 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7158 GIBSONBURG OH
2001-04-26 419-703 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → FRONTIER NORTH, INC. - OH 0615 EVANSPORT OH
2001-04-26 419-807 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7158 BOWLNGGREN OH
2001-04-26 419-809 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → FRONTIER NORTH, INC. - OH 0615 PIONEER OH
2001-04-26 419-830 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 GRAND RPDS OH
2001-04-26 419-880 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRONTIER NORTH, INC. - OH 0615 HELENA OH
2001-04-26 419-881 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → FRONTIER NORTH, INC. - OH 0615 HICKSVILLE OH
2001-04-18 419-300 not yet reported which blocks → TSC COMMUNICATIONS, INC. - OH 0640 ST MARYS OH
2001-04-07 419-806 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BOWLNGGREN OH
2001-03-09 419-508 0XXX3XXX4XXX7XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TOLEDO OH
2001-01-19 419-378 3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 BOWLNGGREN OH
— 419-202 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 SANDUSKY OH
— 419-203 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 VAN WERT OH
— 419-204 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LIMA OH
— 419-205 9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 TOLEDO OH
— 419-206 3XXX4XXX5XXX6XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 TOLEDO OH
— 419-207 not yet reported which blocks → FRONTIER NORTH, INC. - OH 0615 ASHLAND OH
— 419-208 1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FREMONT OH
— 419-209 1XXX3XXX7XXX · 2 holders which blocks → OHIO BELL TEL CO 9321 UPSANDUSKY OH
— 419-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 419-212 6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRYAN OH
— 419-213 0XXX9XXX which blocks → OHIO BELL TEL CO 9321 TOLEDO OH
— 419-214 not yet reported which blocks → ONVOY, LLC - OH 464C TOLEDO OH
— 419-215 0XXX2XXX which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TOLEDO OH
— 419-216 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MONTPELIER OH
— 419-217 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BELLEVUE OH
— 419-218 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 TOLEDO OH
— 419-221 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 LIMA OH
— 419-222 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 LIMA OH
— 419-223 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 LIMA OH
— 419-224 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 LIMA OH

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.