NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

349 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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
— 903-692 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARTHAGE TX
— 903-693 not yet reported which blocks → SOUTHWESTERN BELL 9533 CARTHAGE TX
— 903-694 not yet reported which blocks → SOUTHWESTERN BELL 9533 CARTHAGE TX
— 903-695 5XXX6XXX · 2 holders which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 BLOOMNGGRV TX
— 903-696 not yet reported which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 GUNTER TX
— 903-697 none assigned yet which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 ANNONA TX
— 903-698 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BAGWELL TX
— 903-700 not yet reported which blocks → TX
— 903-707 0–9 XXXall 10 · 4 holders which blocks → CSC VOICE, LLC 612K TYLER TX
— 903-710 1XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → CSC VOICE, LLC 612K BULLARD TX
— 903-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
— 903-712 2XXX5XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 VANALSTYNE TX
— 903-713 not yet reported which blocks → ONE RING NETWORKS II, INC. D/B/A ONE RING NETWORKS 3726 MABANK TX
— 903-714 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 TYLER TX
— 903-717 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 MTPLEASANT TX
— 903-719 not yet reported which blocks → HELMSCO, INC. 6833 CORSICANA TX
— 903-720 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LONGVIEW TX
— 903-721 6XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 JACKSONVL TX
— 903-722 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HENDERSON TX
— 903-723 not yet reported which blocks → BRIGHTSPEED OF EASTERN TEXAS, INC. 2084 PALESTINE TX
— 903-724 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 PALESTINE TX
— 903-725 not yet reported which blocks → ETEX TEL. COOP., INC. 2070 ROSEWOOD TX
— 903-726 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 NEWSMMRFLD TX
— 903-727 not yet reported which blocks → BRIGHTSPEED OF EASTERN TEXAS, INC. 2084 PALESTINE TX
— 903-728 not yet reported which blocks → SOUTHWEST ARKANSAS TEL. COOP., INC. 1724 BLOOMBURG TX
— 903-729 not yet reported which blocks → BRIGHTSPEED OF EASTERN TEXAS, INC. 2084 PALESTINE TX
— 903-730 0XXX1XXX2XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 TYLER TX
— 903-731 none assigned yet which blocks → BRIGHTSPEED OF EASTERN TEXAS, INC. 2084 PALESTINE TX
— 903-732 0XXX2XXX6XXX7XXX8XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 PARIS TX
— 903-734 not yet reported which blocks → ETEX TEL. COOP., INC. 2070 PRITCHETT TX
— 903-735 not yet reported which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 TEXARKANA TX
— 903-736 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LONGVIEW TX
— 903-737 not yet reported which blocks → SOUTHWESTERN BELL 9533 PARIS TX
— 903-738 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LONGVIEW TX
— 903-739 not yet reported which blocks → SOUTHWESTERN BELL 9533 PARIS TX
— 903-741 0XXX1XXX2XXX3XXX4XXX7XXX8XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BOGATA TX
— 903-742 4XXX5XXX8XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 MARSHALL TX
— 903-743 none assigned yet which blocks → EASTEX TEL. COOP., INC. 2068 HUDSN TX
— 903-744 1XXX6XXX7XXX8XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 SHERMAN TX
— 903-745 none assigned yet which blocks → ONVOY, LLC - TX 903C HOWE TX
— 903-748 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 TEXARKANA TX
— 903-749 6XXX7XXX9XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 TYLER TX
— 903-751 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 CADDOMILLS TX
— 903-752 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 TYLER TX
— 903-753 not yet reported which blocks → SOUTHWESTERN BELL 9533 LONGVIEW TX
— 903-754 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 CARTHAGE TX
— 903-755 not yet reported which blocks → ETEX TEL. COOP., INC. 2070 MIMS TX
— 903-756 not yet reported which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 LINDEN TX
— 903-757 not yet reported which blocks → SOUTHWESTERN BELL 9533 LONGVIEW TX
— 903-758 not yet reported which blocks → SOUTHWESTERN BELL 9533 LONGVIEW TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.