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 832
AERIAL COMMUNICATIONS, INC. 177
NEW CINGULAR WIRELESS PCS, LLC - IL 147
SOUTHWESTERN BELL 83
LEVEL 3 COMMUNICATIONS, LLC - TX 71
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 55
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
— 832-253 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J BAMMEL TX
— 832-256 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
— 832-263 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 LANGHAMCRK TX
— 832-264 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
— 832-265 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
— 832-284 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - TX 903C APOLLO TX
— 832-285 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DICKINSON TX
— 832-286 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - TX 903C BAMMEL TX
— 832-288 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 HSTNSUBURB TX
— 832-289 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
— 832-295 3XXX6XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HSTNSUBURB TX
— 832-296 0XXX1XXX3XXX4XXX5XXX6XXX7XXX9XXX which blocks → ETS TELEPHONE COMPANY, INC. 2091 SPRING TX
— 832-299 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C SPRING TX
— 832-303 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F HOUSTON TX
— 832-307 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - TX 903C MONTBLVIEU TX
— 832-309 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
— 832-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
— 832-321 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J BARKER TX
— 832-323 1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 CHANNELVW TX
— 832-324 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DEER PARK TX
— 832-325 8XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 HOUSTON TX
— 832-326 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 SPRING TX
— 832-327 5XXX6XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HSTNSUBURB TX
— 832-328 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 HSTNSUBURB TX
— 832-334 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 CYPRESS TX
— 832-336 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J MANVEL TX
— 832-338 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
— 832-342 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 STAFFORD TX
— 832-344 1XXX3XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 RICHMNRNBG TX
— 832-345 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F CLEVELAND TX
— 832-347 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 HSTNSUBURB TX
— 832-348 0XXX3XXX6XXX7XXX9XXX which blocks → SOUTHWESTERN BELL 9533 BAMMEL TX
— 832-349 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → ETS TELEPHONE COMPANY, INC. 2091 CYPRESS TX
— 832-351 0XXX2XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 HSTNSUBURB TX
— 832-356 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F HOUSTON TX
— 832-358 1XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 HOUSTON TX
— 832-363 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 RICHMNRNBG TX
— 832-364 1XXX2XXX3XXX4XXX5XXX6XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
— 832-365 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 CHANNELVW TX
— 832-366 1XXX3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 HOUSTON TX
— 832-367 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
— 832-368 none assigned yet which blocks → METROPCS, INC. 5562 HOUSTON TX
— 832-369 8XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HOUSTON TX
— 832-372 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
— 832-375 0XXX1XXX4XXX5XXX9XXX which blocks → SOUTHWESTERN BELL 9533 BAMMEL TX
— 832-376 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CHANNELVW TX
— 832-381 0XXX2XXX3XXX4XXX6XXX7XXX8XXX · 2 holders which blocks → GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 SPRING TX
— 832-386 0XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 HOUSTON TX
— 832-391 0XXX1XXX2XXX4XXX5XXX6XXX8XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BARKER TX
— 832-392 2XXX3XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LANGHAMCRK TX

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.