NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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 27
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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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 469-532 0XXX1XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DLFTWTARPT TX
— 469-533 not yet reported which blocks → LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 DALLAS TX
— 469-537 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MIDLOTHIAN TX
— 469-538 not yet reported which blocks → ONE RING NETWORKS II, INC. D/B/A ONE RING NETWORKS 3726 KAUFMAN TX
— 469-539 not yet reported which blocks → MATRIX TELECOM, LLC. S/I/I TNCI - TX 7715 FORNEY TX
— 469-541 not yet reported which blocks → MATRIX TELECOM, LLC. S/I/I TNCI - TX 7715 MCKINNEY TX
— 469-546 5XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 CARROLLTON TX
— 469-547 5XXX6XXX7XXX · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 DALLAS TX
— 469-548 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 WAXAHACHIE TX
— 469-549 2XXX3XXX9XXX which blocks → SOUTHWESTERN BELL TELEPHONE COMPANY - TX 7726 LEWISVILLE TX
— 469-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST TX
— 469-556 not yet reported which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 469-557 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 CARROLLTON TX
— 469-561 not yet reported which blocks → MATRIX TELECOM, LLC. S/I/I TNCI - TX 7715 ITALY TX
— 469-565 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K IRVING TX
— 469-567 0XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 DALLAS TX
— 469-568 not yet reported which blocks → ONVOY, LLC - TX 903C CARROLLTON TX
— 469-569 not yet reported which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 469-574 4XXX8XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CARROLLTON TX
— 469-575 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 CEDAR HILL TX
— 469-576 6XXX8XXX9XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 469-579 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 FRISCO TX
— 469-582 not yet reported which blocks → MATRIX TELECOM, LLC. S/I/I TNCI - TX 7715 FRISCO TX
— 469-583 not yet reported which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 469-585 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
— 469-586 6XXX7XXX8XXX9XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 IRVING TX
— 469-587 4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 DALLAS TX
— 469-589 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F NEVADA TX
— 469-593 not yet reported which blocks → SOUTHWESTERN BELL 9533 DALLAS TX
— 469-595 0XXX2XXX7XXX8XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 KAUFMAN TX
— 469-599 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C IRVING TX
— 469-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
— 469-619 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALLAS TX
— 469-621 not yet reported which blocks → LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 DALLAS TX
— 469-622 not yet reported which blocks → MATRIX TELECOM, LLC. S/I/I TNCI - TX 7715 ANNA TX
— 469-624 not yet reported which blocks → SOUTHWESTERN BELL 9533 DALLAS TX
— 469-625 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MCKINNEY TX
— 469-626 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K PLANO TX
— 469-628 9XXX which blocks → T-MOBILE USA, INC. 6529 GRANDPRARI TX
— 469-629 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 DLFTWTARPT TX
— 469-632 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 TERRELL TX
— 469-633 not yet reported which blocks → SOUTHWESTERN BELL 9533 FRISCO TX
— 469-635 0XXX9XXX which blocks → ONVOY, LLC - TX 903C LEWISVILLE TX
— 469-636 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 MCKINNEY TX
— 469-637 1XXX4XXX8XXX9XXX · 2 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LEWISVILLE TX
— 469-641 not yet reported which blocks → MATRIX TELECOM, LLC. S/I/I TNCI - TX 7715 ENNIS TX
— 469-643 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 DE SOTO TX
— 469-644 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
— 469-645 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 LEWISVILLE TX
— 469-648 1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 IRVING TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.