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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 419-509 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TOLEDO OH
— 419-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 419-515 2XXX3XXX4XXX5XXX6XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 SANDUSKY OH
— 419-520 5XXX7XXX8XXX9XXX · 4 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 MANSFIELD OH
— 419-521 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 MANSFIELD OH
— 419-522 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 MANSFIELD OH
— 419-523 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 OTTAWA OH
— 419-524 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 MANSFIELD OH
— 419-525 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 MANSFIELD OH
— 419-526 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 MANSFIELD OH
— 419-527 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 MANSFIELD OH
— 419-528 5XXX8XXX9XXX · 2 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 MANSFIELD OH
— 419-529 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 MANSFIELD OH
— 419-530 not yet reported which blocks → OHIO BELL TEL CO 9321 TOLEDO OH
— 419-531 not yet reported which blocks → OHIO BELL TEL CO 9321 TOLEDO OH
— 419-532 not yet reported which blocks → KALIDA TEL. CO., INC. 0625 KALIDA OH
— 419-533 9XXX which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 LIBERTYCTR OH
— 419-534 0XXX which blocks → OHIO BELL TEL CO 9321 TOLEDO OH
— 419-535 2XXX which blocks → OHIO BELL TEL CO 9321 TOLEDO OH
— 419-536 not yet reported which blocks → OHIO BELL TEL CO 9321 TOLEDO OH
— 419-537 3XXX which blocks → OHIO BELL TEL CO 9321 TOLEDO OH
— 419-538 not yet reported which blocks → GLANDORF TEL. CO., INC. 0619 GLANDORF OH
— 419-539 not yet reported which blocks → OHIO BELL TEL CO 9321 TOLEDO OH
— 419-541 2XXX5XXX8XXX9XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 NORWALK OH
— 419-542 3XXX which blocks → FRONTIER NORTH, INC. - OH 0615 HICKSVILLE OH
— 419-543 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANSFIELD OH
— 419-544 5XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANSFIELD OH
— 419-545 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANSFIELD OH
— 419-547 5XXX which blocks → FRONTIER NORTH, INC. - OH 0615 CLYDE OH
— 419-549 1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 LIMA OH
— 419-552 1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FREMONT OH
— 419-553 1XXX2XXX3XXX4XXX5XXX8XXX · 4 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 BRYAN OH
— 419-554 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORWALK OH
— 419-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST OH
— 419-557 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J SANDUSKY OH
— 419-559 0XXX2XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FREMONT OH
— 419-560 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CHESTERVL OH
— 419-561 4XXX5XXX6XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BUCYRUS OH
— 419-562 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 BUCYRUS OH
— 419-563 none assigned yet which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 BUCYRUS OH
— 419-564 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MANSFIELD OH
— 419-565 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MANSFIELD OH
— 419-566 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MANSFIELD OH
— 419-568 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 WAYNESFLD OH
— 419-569 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 BUCYRUS OH
— 419-571 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MANSFIELD OH
— 419-572 2XXX3XXX4XXX5XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ARCHBOLD OH
— 419-573 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 PT CLINTON OH
— 419-574 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 TOLEDO OH
— 419-576 1XXX3XXX4XXX5XXX · 3 holders which blocks → METROPCS, INC. 5562 DEFIANCE 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.