NumberResearchRecent prefix assignments
341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026
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
New assignments by month
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 330-650 | not yet reported which blocks → | WINDSTREAM WESTERN RESERVE, INC. | 0666 | HUDSON | OH |
| — | 330-652 | not yet reported which blocks → | OHIO BELL TEL CO | 9321 | NILES | OH |
| — | 330-653 | not yet reported which blocks → | WINDSTREAM WESTERN RESERVE, INC. | 0666 | HUDSON | OH |
| — | 330-654 | 6XXX7XXX8XXX which blocks → | BRIGHTSPEED OF NORTHWEST OHIO, INC. | 0661 | LAKEMILTON | OH |
| — | 330-655 | not yet reported which blocks → | WINDSTREAM WESTERN RESERVE, INC. | 0666 | HUDSON | OH |
| — | 330-656 | not yet reported which blocks → | WINDSTREAM WESTERN RESERVE, INC. | 0666 | NORTHFIELD | OH |
| — | 330-657 | 0XXX4XXX7XXX8XXX · 4 holders which blocks → | WINDSTREAM WESTERN RESERVE, INC. | 0666 | PENINSULA | OH |
| — | 330-658 | not yet reported which blocks → | DOYLESTOWN TEL. CO. | 0609 | DOYLESTOWN | OH |
| — | 330-659 | not yet reported which blocks → | WINDSTREAM WESTERN RESERVE, INC. | 0666 | RICHFIELD | OH |
| — | 330-660 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | YOUNGSTOWN | OH |
| — | 330-664 | 9XXX which blocks → | FRONTIER NORTH, INC. - OH | 0615 | MONTROSE | OH |
| — | 330-665 | not yet reported which blocks → | FRONTIER NORTH, INC. - OH | 0615 | MONTROSE | OH |
| — | 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 |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.