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 330
OHIO BELL TEL CO 198
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 116
NEW CINGULAR WIRELESS PCS, LLC - IL 64
T-MOBILE USA, INC. 62
BRIGHTSPEED OF NORTHWEST OHIO, INC. 60
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
— 330-666 not yet reported which blocks → FRONTIER NORTH, INC. - OH 0615 MONTROSE OH
— 330-667 0XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → FRONTIER NORTH, INC. - OH 0615 CHATHAM OH
— 330-668 not yet reported which blocks → FRONTIER NORTH, INC. - OH 0615 MONTROSE OH
— 330-669 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 SMITHVILLE OH
— 330-670 not yet reported which blocks → FRONTIER NORTH, INC. - OH 0615 MONTROSE OH
— 330-672 not yet reported which blocks → OHIO BELL TEL CO 9321 KENT OH
— 330-673 not yet reported which blocks → OHIO BELL TEL CO 9321 KENT OH
— 330-674 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 MILLERSBG OH
— 330-675 9XXX which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 WARREN OH
— 330-676 2XXX3XXX5XXX · 2 holders which blocks → OHIO BELL TEL CO 9321 KENT OH
— 330-677 not yet reported which blocks → OHIO BELL TEL CO 9321 KENT OH
— 330-678 not yet reported which blocks → OHIO BELL TEL CO 9321 KENT OH
— 330-679 1XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → OHIO BELL TEL CO 9321 SALINEVL OH
— 330-680 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 ALLIANCE OH
— 330-682 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 ORRVILLE OH
— 330-683 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 ORRVILLE OH
— 330-684 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 ORRVILLE OH
— 330-685 7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CANTON OH
— 330-686 not yet reported which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-687 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AKRON OH
— 330-688 not yet reported which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-689 6XXX8XXX9XXX · 2 holders which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-690 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 AKRON OH
— 330-692 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 LISBON OH
— 330-693 1XXX2XXX3XXX4XXX5XXX7XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 LOUISVILLE OH
— 330-694 1XXX2XXX3XXX5XXX6XXX7XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MAGNOLWSBG OH
— 330-695 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 FREDECKSBG OH
— 330-696 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 AKRON OH
— 330-697 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 AKRON OH
— 330-698 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 APPLECREEK OH
— 330-699 not yet reported which blocks → OHIO BELL TEL CO 9321 UNIONTOWN OH
— 330-700 not yet reported which blocks → OH
— 330-701 none assigned yet which blocks → T-MOBILE USA, INC. 6529 AKRON OH
— 330-702 4XXX5XXX6XXX9XXX · 3 holders which blocks → OHIO BELL TEL CO 9321 CANFIELD OH
— 330-703 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 AKRON OH
— 330-704 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CANTON OH
— 330-705 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CANTON OH
— 330-706 4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-707 5XXX6XXX7XXX8XXX which blocks → OHIO BELL TEL CO 9321 YOUNGSTOWN OH
— 330-710 not yet reported which blocks → SPOK, INC. 6630 AKRON OH
— 330-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 330-712 not yet reported which blocks → SPOK, INC. 6630 HARTVILLE OH
— 330-713 not yet reported which blocks → SPOK, INC. 6630 AKRON OH
— 330-714 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 AKRON OH
— 330-715 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 AKRON OH
— 330-716 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 YOUNGSTOWN OH
— 330-717 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 YOUNGSTOWN OH
— 330-718 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 YOUNGSTOWN OH
— 330-719 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 YOUNGSTOWN OH
— 330-720 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 YOUNGSTOWN 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.