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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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 512-732 not yet reported which blocks → SOUTHWESTERN BELL 9533 AUSTIN TX
— 512-733 3XXX4XXX9XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 AUSTIN TX
— 512-734 6XXX7XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LAMPASAS TX
— 512-735 not yet reported which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J AUSTIN TX
— 512-736 not yet reported which blocks → T-MOBILE USA, INC. 6529 AUSTIN TX
— 512-738 3XXX4XXX5XXX8XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 SAN MARCOS TX
— 512-740 none assigned yet which blocks → T-MOBILE USA, INC. 6529 AUSTIN TX
— 512-741 not yet reported which blocks → SOUTHWESTERN BELL 9533 AUSTIN TX
— 512-742 not yet reported which blocks → SOUTHWESTERN BELL 9533 AUSTIN TX
— 512-743 none assigned yet which blocks → T-MOBILE USA, INC. 6529 AUSTIN TX
— 512-744 3XXX5XXX7XXX8XXX which blocks → LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 AUSTIN TX
— 512-746 0XXX1XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 JARRELL TX
— 512-748 none assigned yet which blocks → T-MOBILE USA, INC. 6529 AUSTIN TX
— 512-750 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
— 512-751 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
— 512-752 not yet reported which blocks → BRIGHTSPEED OF TEXAS, INC. 2114 LOMETA TX
— 512-753 none assigned yet which blocks → BRIGHTSPEED OF SOUTHERN TEXAS, INC. 2140 SAN MARCOS TX
— 512-754 not yet reported which blocks → BRIGHTSPEED OF SOUTHERN TEXAS, INC. 2140 SAN MARCOS TX
— 512-755 8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 BURNET TX
— 512-756 none assigned yet which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 2154 BURNET TX
— 512-757 8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SAN MARCOS TX
— 512-759 0XXX6XXX7XXX8XXX · 2 holders which blocks → BRIGHTSPEED OF TEXAS, INC. 2114 HUTTO TX
— 512-760 1XXX2XXX3XXX4XXX8XXX9XXX · 2 holders which blocks → METROPCS, INC. 5562 ROCKDALE TX
— 512-762 none assigned yet which blocks → T-MOBILE USA, INC. 6529 AUSTIN TX
— 512-763 0XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 4344 GEORGETOWN TX
— 512-764 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 2154 DALE/LTNSP TX
— 512-767 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 AUSTIN TX
— 512-768 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 ADAMSVILLE TX
— 512-770 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 AUSTIN TX
— 512-771 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
— 512-772 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BASTROP TX
— 512-773 none assigned yet which blocks → T-MOBILE USA, INC. 6529 AUSTIN TX
— 512-775 not yet reported which blocks → T-MOBILE USA, INC. 6529 AUSTIN TX
— 512-778 0XXX2XXX3XXX4XXX7XXX8XXX · 6 holders which blocks → SOUTHWESTERN BELL 9533 LIBERTY HL TX
— 512-779 none assigned yet which blocks → T-MOBILE USA, INC. 6529 AUSTIN TX
— 512-782 0–9 XXXall 10 · 2 holders which blocks → SOUTHWESTERN BELL 9533 AUSTIN TX
— 512-784 none assigned yet which blocks → T-MOBILE USA, INC. 6529 AUSTIN TX
— 512-785 not yet reported which blocks → T-MOBILE USA, INC. 6529 AUSTIN TX
— 512-787 none assigned yet which blocks → T-MOBILE USA, INC. 6529 SAN MARCOS TX
— 512-789 none assigned yet which blocks → T-MOBILE USA, INC. 6529 AUSTIN TX
— 512-791 none assigned yet which blocks → T-MOBILE USA, INC. 6529 AUSTIN TX
— 512-793 0XXX1XXX7XXX8XXX9XXX · 5 holders which blocks → FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 2154 BUCHANNDAM TX
— 512-794 not yet reported which blocks → SOUTHWESTERN BELL 9533 AUSTIN TX
— 512-795 1XXX4XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 AUSTIN TX
— 512-796 none assigned yet which blocks → T-MOBILE USA, INC. 6529 AUSTIN TX
— 512-797 none assigned yet which blocks → T-MOBILE USA, INC. 6529 AUSTIN TX
— 512-798 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → MATRIX TELECOM, LLC. S/I/I TNCI - TX 7715 SMITHVILLE TX
— 512-799 none assigned yet which blocks → T-MOBILE USA, INC. 6529 AUSTIN TX
— 512-801 none assigned yet which blocks → T-MOBILE USA, INC. 6529 AUSTIN TX
— 512-802 not yet reported which blocks → SPOK, INC. 6630 AUSTIN TX

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.