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 801
QWEST CORPORATION 327
T-MOBILE USA, INC. 91
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 69
NEW CINGULAR WIRELESS PCS, LLC 62
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 50
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
— 801-747 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7176 MURRAY UT
— 801-748 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7176 MIDVALE UT
— 801-749 not yet reported which blocks → ONVOY, LLC - UT 871E OGDEN UT
— 801-750 4XXX which blocks → T-MOBILE USA, INC. 6529 SALT LAKE UT
— 801-751 not yet reported which blocks → ONVOY, LLC - UT 871E OGDEN UT
— 801-752 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - UT 3231 OGDEN UT
— 801-754 2XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → QWEST CORPORATION 9636 PAYSON UT
— 801-755 not yet reported which blocks → T-MOBILE USA, INC. 6529 SALT LAKE UT
— 801-756 not yet reported which blocks → QWEST CORPORATION 9636 AMERCNFORK UT
— 801-758 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MIDVALE UT
— 801-759 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SALT LAKE UT
— 801-760 not yet reported which blocks → ONVOY, LLC - UT 871E OGDEN UT
— 801-761 not yet reported which blocks → ONVOY, LLC - UT 871E OGDEN UT
— 801-762 6XXX7XXX8XXX9XXX · 2 holders which blocks → QWEST CORPORATION 9636 PROVO UT
— 801-763 not yet reported which blocks → QWEST CORPORATION 9636 AMERCNFORK UT
— 801-764 not yet reported which blocks → QWEST CORPORATION 9636 PROVO UT
— 801-765 not yet reported which blocks → QWEST CORPORATION 9636 PROVO UT
— 801-766 7XXX which blocks → QWEST CORPORATION 9636 LEHI UT
— 801-767 not yet reported which blocks → QWEST CORPORATION 9636 LEHI UT
— 801-768 5XXX6XXX · 2 holders which blocks → QWEST CORPORATION 9636 LEHI UT
— 801-770 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - UT 3231 AMERCNFORK UT
— 801-771 not yet reported which blocks → QWEST CORPORATION 9636 CLEARFIELD UT
— 801-772 2XXX6XXX7XXX8XXX9XXX which blocks → QWEST CORPORATION 9636 AMERCNFORK UT
— 801-773 not yet reported which blocks → QWEST CORPORATION 9636 CLEARFIELD UT
— 801-774 not yet reported which blocks → QWEST CORPORATION 9636 CLEARFIELD UT
— 801-775 not yet reported which blocks → QWEST CORPORATION 9636 CLEARFIELD UT
— 801-776 not yet reported which blocks → QWEST CORPORATION 9636 CLEARFIELD UT
— 801-777 not yet reported which blocks → QWEST CORPORATION 9636 CLEARFIELD UT
— 801-778 not yet reported which blocks → QWEST CORPORATION 9636 OGDEN UT
— 801-779 not yet reported which blocks → QWEST CORPORATION 9636 CLEARFIELD UT
— 801-780 0–9 XXXwhole prefix which blocks → ONVOY, LLC - UT 871E MIDVALE UT
— 801-781 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7176 OGDEN UT
— 801-782 not yet reported which blocks → QWEST CORPORATION 9636 OGDEN UT
— 801-783 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - UT 3231 SALT LAKE UT
— 801-784 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - UT 3231 CLEARFIELD UT
— 801-785 not yet reported which blocks → QWEST CORPORATION 9636 PLEASATGRV UT
— 801-786 9XXX which blocks → QWEST CORPORATION 9636 OGDEN UT
— 801-787 not yet reported which blocks → T-MOBILE USA, INC. 6529 PROVO UT
— 801-788 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - UT 3231 PROVO UT
— 801-789 not yet reported which blocks → DIRECT COMMUNICATIONS CEDAR VALLEY, LLC 758D EAGLE MTN UT
— 801-790 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → AT&T - LOCAL 7421 MIDVALE UT
— 801-791 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 OGDEN UT
— 801-792 not yet reported which blocks → T-MOBILE USA, INC. 6529 SALT LAKE UT
— 801-794 5XXX7XXX8XXX · 3 holders which blocks → QWEST CORPORATION 9636 SPANIHFORK UT
— 801-796 2XXX which blocks → QWEST CORPORATION 9636 PLEASATGRV UT
— 801-797 0–9 XXXall 10 · 7 holders which blocks → COMCAST IP PHONE, LLC 318J BOUNTIFUL UT
— 801-798 not yet reported which blocks → QWEST CORPORATION 9636 SPANIHFORK UT
— 801-799 not yet reported which blocks → QWEST CORPORATION 9636 SALT LAKE UT
— 801-802 not yet reported which blocks → QWEST CORPORATION 9636 PROVO UT
— 801-804 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SPANIHFORK UT

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.