NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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, last 30 days
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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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Quick find in this area code:
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 419-497 1XXX4XXX6XXX9XXX · 3 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 JEWELL OH
— 419-499 7XXX which blocks → FRONTIER NORTH, INC. - OH 0615 MILAN OH
— 419-502 not yet reported which blocks → ONVOY, LLC - OH 464C SANDUSKY OH
— 419-503 4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANDUSKY OH
— 419-504 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANDUSKY OH
— 419-506 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ANTWERP OH
— 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

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.