NumberResearch Membership · Data 10/01/2026

Recent prefix assignments

374 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 10/01/2026

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
New assignments by month Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 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
— 513-779 not yet reported which blocks → CINCINNATI BELL 9348 BETHANY OH
— 513-780 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
— 513-782 not yet reported which blocks → CINCINNATI BELL 9348 CINCINNATI OH
— 513-783 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 MIDDLETOWN OH
— 513-784 not yet reported which blocks → CINCINNATI BELL 9348 CINCINNATI OH
— 513-785 0XXX8XXX9XXX · 2 holders which blocks → CINCINNATI BELL 9348 HAMILTON OH
— 513-786 not yet reported which blocks → CINCINNATI BELL 9348 CINCINNATI OH
— 513-787 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
— 513-788 1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 TELECOM OF OHIO, LLC - OH 7460 HARRISON OH
— 513-789 not yet reported which blocks → OH
— 513-791 not yet reported which blocks → CINCINNATI BELL 9348 CINCINNATI OH
— 513-792 not yet reported which blocks → CINCINNATI BELL 9348 CINCINNATI OH
— 513-793 not yet reported which blocks → CINCINNATI BELL 9348 CINCINNATI OH
— 513-794 not yet reported which blocks → CINCINNATI BELL 9348 CINCINNATI OH
— 513-796 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRONTIER NORTH, INC. - OH 0615 MORNINGSUN OH
— 513-797 not yet reported which blocks → CINCINNATI BELL 9348 CLERMONT OH
— 513-798 1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → FRONTIER NORTH, INC. - OH 0615 MORNINGSUN OH
— 513-804 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 MIDDLETOWN OH
— 513-805 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HAMILTON OH
— 513-807 not yet reported which blocks → T-MOBILE USA, INC. 6529 CINCINNATI OH
— 513-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OH
— 513-812 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 732J LEBANON OH
— 513-819 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 CINCINNATI OH
— 513-820 not yet reported which blocks → CINCINNATI BELL 9348 HAMILTON OH
— 513-821 not yet reported which blocks → CINCINNATI BELL 9348 CINCINNATI OH
— 513-825 not yet reported which blocks → CINCINNATI BELL 9348 CINCINNATI OH
— 513-826 not yet reported which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CINCINNATI OH
— 513-827 3XXX6XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
— 513-829 not yet reported which blocks → CINCINNATI BELL 9348 HAMILTON OH
— 513-831 not yet reported which blocks → CINCINNATI BELL 9348 LTL MIAMI OH
— 513-833 0XXX1XXX3XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 LTL MIAMI OH
— 513-836 1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 LEBANON OH
— 513-839 2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → METROPCS, INC. 5562 OXFORD OH
— 513-841 not yet reported which blocks → CINCINNATI BELL 9348 CINCINNATI OH
— 513-842 not yet reported which blocks → PAETEC ITEL, LLC 829J CINCINNATI OH
— 513-843 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7836 CLERMONT OH
— 513-844 not yet reported which blocks → CINCINNATI BELL 9348 HAMILTON OH
— 513-845 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7836 HARRISON OH
— 513-847 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 7836 BETHANY OH
— 513-850 0XXX2XXX6XXX7XXX8XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 LEBANON OH
— 513-851 not yet reported which blocks → CINCINNATI BELL 9348 CINCINNATI OH
— 513-852 not yet reported which blocks → CINCINNATI BELL 9348 CINCINNATI OH
— 513-853 not yet reported which blocks → CINCINNATI BELL 9348 CINCINNATI OH
— 513-855 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K WAYNESVL OH
— 513-856 not yet reported which blocks → CINCINNATI BELL 9348 HAMILTON OH
— 513-858 0XXX5XXX9XXX · 2 holders which blocks → CINCINNATI BELL 9348 HAMILTON OH
— 513-860 not yet reported which blocks → CINCINNATI BELL 9348 HAMILTON OH
— 513-861 not yet reported which blocks → CINCINNATI BELL 9348 CINCINNATI OH
— 513-863 not yet reported which blocks → CINCINNATI BELL 9348 HAMILTON OH
— 513-864 not yet reported which blocks → CINCINNATI BELL 9348 CINCINNATI OH

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 10/01/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.