NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

375 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 28
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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
— 432-333 9XXX which blocks → SOUTHWESTERN BELL 9533 ODESSA TX
— 432-334 not yet reported which blocks → SOUTHWESTERN BELL 9533 ODESSA TX
— 432-335 not yet reported which blocks → SOUTHWESTERN BELL 9533 ODESSA TX
— 432-336 0XXX which blocks → SOUTHWESTERN BELL 9533 FTSTOCKTON TX
— 432-337 5XXX which blocks → SOUTHWESTERN BELL 9533 ODESSA TX
— 432-343 0XXX which blocks → VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 1181 COYANOSA TX
— 432-345 not yet reported which blocks → BIG BEND TEL. CO., INC. 2039 SANDERSON TX
— 432-349 none assigned yet which blocks → METROPCS, INC. 5562 TERMINAL TX
— 432-352 none assigned yet which blocks → METROPCS, INC. 5562 TERMINAL TX
— 432-353 not yet reported which blocks → WES-TEX TELEPHONE COOP., INC. 2168 ACKERLY TX
— 432-354 not yet reported which blocks → WES-TEX TELEPHONE COOP., INC. 2168 GARDENCITY TX
— 432-355 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → CSC VOICE, LLC 612K ANDREWS TX
— 432-358 not yet reported which blocks → BIG BEND TEL. CO., INC. 2039 ALAMITO TX
— 432-361 not yet reported which blocks → TX
— 432-362 not yet reported which blocks → SOUTHWESTERN BELL 9533 ODESSA TX
— 432-363 4XXX5XXX which blocks → SOUTHWESTERN BELL 9533 ODESSA TX
— 432-364 not yet reported which blocks → BIG BEND TEL. CO., INC. 2039 CALAMTYCRK TX
— 432-366 not yet reported which blocks → SOUTHWESTERN BELL 9533 ODESSA TX
— 432-367 not yet reported which blocks → SOUTHWESTERN BELL 9533 ODESSA TX
— 432-368 not yet reported which blocks → SOUTHWESTERN BELL 9533 ODESSA TX
— 432-371 not yet reported which blocks → BIG BEND TEL. CO., INC. 2039 TERLINGUA TX
— 432-376 not yet reported which blocks → BIG BEND TEL. CO., INC. 2039 HEATHCNYON TX
— 432-377 not yet reported which blocks → VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 1181 MENTONE TX
— 432-381 4XXX6XXX8XXX9XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 ODESSA TX
— 432-384 not yet reported which blocks → BIG BEND TEL. CO., INC. 2039 REDFORD TX
— 432-385 4XXX5XXX6XXX8XXX9XXX which blocks → SOUTHWESTERN BELL 9533 ODESSA TX
— 432-386 0XXX2XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 MARATHON TX
— 432-389 0XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - TX 903C PYOTE TX
— 432-393 not yet reported which blocks → WES-TEX TELEPHONE COOP., INC. 2168 SAND SPG TX
— 432-394 not yet reported which blocks → WES-TEX TELEPHONE COOP., INC. 2168 COAHOMA TX
— 432-395 not yet reported which blocks → BIG BEND TEL. CO., INC. 2039 SIXSHOOTER TX
— 432-397 not yet reported which blocks → WES-TEX TELEPHONE COOP., INC. 2168 STLAWRENCE TX
— 432-398 not yet reported which blocks → WES-TEX TELEPHONE COOP., INC. 2168 LOMAX TX
— 432-399 not yet reported which blocks → WES-TEX TELEPHONE COOP., INC. 2168 LUTHER TX
— 432-409 not yet reported which blocks → TX
— 432-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
— 432-424 not yet reported which blocks → BIG BEND TEL. CO., INC. 2039 LAJITAS TX
— 432-425 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 TERMINAL TX
— 432-426 0XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → SOUTHWESTERN BELL 9533 FORT DAVIS TX
— 432-430 not yet reported which blocks → TX
— 432-432 not yet reported which blocks → TX
— 432-438 0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX which blocks → SOUTHWESTERN BELL 9533 ODESSA TX
— 432-445 not yet reported which blocks → VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 1181 PECOS TX
— 432-447 8XXX which blocks → VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 1181 PECOS TX
— 432-448 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 PECOS TX
— 432-457 not yet reported which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 FORSAN TX
— 432-458 not yet reported which blocks → WES-TEX TELEPHONE COOP., INC. 2168 W STANTON TX
— 432-459 not yet reported which blocks → WES-TEX TELEPHONE COOP., INC. 2168 LENORAH TX
— 432-464 not yet reported which blocks → VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 1181 ANDREWS TX
— 432-466 5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 BIG SPRING 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.