NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 21
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
— 330-824 1XXX4XXX which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 WARREN OH
— 330-825 not yet reported which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-826 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → AT&T - LOCAL 7421 NO CANTON OH
— 330-827 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEWPHLDLPH OH
— 330-828 1XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → OHIO BELL TEL CO 9321 DALTON OH
— 330-829 not yet reported which blocks → OHIO BELL TEL CO 9321 ALLIANCE OH
— 330-830 not yet reported which blocks → OHIO BELL TEL CO 9321 MASSILLON OH
— 330-831 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LISBON OH
— 330-832 not yet reported which blocks → OHIO BELL TEL CO 9321 MASSILLON OH
— 330-833 not yet reported which blocks → OHIO BELL TEL CO 9321 MASSILLON OH
— 330-834 5XXX6XXX7XXX8XXX · 2 holders which blocks → OHIO BELL TEL CO 9321 MASSILLON OH
— 330-835 6XXX7XXX8XXX · 2 holders which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-836 not yet reported which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-837 not yet reported which blocks → OHIO BELL TEL CO 9321 MASSILLON OH
— 330-838 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 NO CANTON OH
— 330-839 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 RAVENNA OH
— 330-841 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 WARREN OH
— 330-842 5XXX6XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 KENT OH
— 330-843 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 ELIVERPOOL OH
— 330-844 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MASSILLON OH
— 330-845 1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WOOSTER OH
— 330-847 4XXX which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 WARREN OH
— 330-848 not yet reported which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-849 0XXX1XXX2XXX3XXX4XXX5XXX · 4 holders which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-850 1XXX2XXX3XXX5XXX7XXX · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K ROOTSTOWN OH
— 330-851 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 SEBRING OH
— 330-852 5XXX6XXX which blocks → FRONTIER NORTH, INC. - OH 0615 SUGARCREEK OH
— 330-853 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LISBON OH
— 330-854 8XXX which blocks → OHIO BELL TEL CO 9321 CANALFULTN OH
— 330-855 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 MARSHALLVL OH
— 330-856 0XXX which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 WARREN OH
— 330-857 7XXX which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 KIDRON OH
— 330-859 0XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - OH 0615 MINERAL CY OH
— 330-860 0XXX3XXX4XXX5XXX7XXX · 3 holders which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-861 2XXX3XXX4XXX6XXX8XXX9XXX · 2 holders which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-862 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRONTIER NORTH, INC. - OH 0615 PARIS OH
— 330-863 3XXX4XXX5XXX8XXX · 3 holders which blocks → FRONTIER NORTH, INC. - OH 0615 MALVERN OH
— 330-864 not yet reported which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-865 not yet reported which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-866 0XXX6XXX7XXX8XXX · 4 holders which blocks → OHIO BELL TEL CO 9321 MAGNOLWSBG OH
— 330-867 not yet reported which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-868 8XXX which blocks → FRONTIER NORTH, INC. - OH 0615 MINERVA OH
— 330-869 1XXX7XXX · 2 holders which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-871 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → OHIO BELL TEL CO 9321 LOUISVILLE OH
— 330-872 2XXX4XXX8XXX · 2 holders which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 NEWTON FLS OH
— 330-873 not yet reported which blocks → OHIO BELL TEL CO 9321 AKRON OH
— 330-874 6XXX7XXX8XXX · 2 holders which blocks → FRONTIER NORTH, INC. - OH 0615 BOLIVAR OH
— 330-875 not yet reported which blocks → OHIO BELL TEL CO 9321 LOUISVILLE OH
— 330-876 8XXX9XXX which blocks → BRIGHTSPEED OF NORTHWEST OHIO, INC. 0661 KINSMAN OH
— 330-877 not yet reported which blocks → OHIO BELL TEL CO 9321 HARTVILLE 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.