NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
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
— 870-458 8XXX which blocks → BRIGHTSPEED OF ARKANSAS, LLC 1706 VIOLA AR
— 870-459 0XXX4XXX6XXX7XXX · 4 holders which blocks → BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 COTTONPLNT AR
— 870-460 5XXX7XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 MONTICELLO AR
— 870-462 6XXX7XXX · 2 holders which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1143 HOLLYGROVE AR
— 870-463 not yet reported which blocks → SOUTH ARKANSAS TEL. CO., INC. 1702 HERMITAGE AR
— 870-464 0XXX1XXX2XXX3XXX8XXX9XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 ARKADLPHIA AR
— 870-465 not yet reported which blocks → SOUTH ARKANSAS TEL. CO., INC. 1702 BANKS AR
— 870-467 2XXX4XXX7XXX8XXX · 3 holders which blocks → BRIGHTSPEED OF NORTHERN ARKANSAS, LLC 1711 GAMALIEL AR
— 870-469 0XXX2XXX3XXX4XXX6XXX8XXX · 5 holders which blocks → SOUTHWESTERN BELL 9533 WILMAR AR
— 870-473 not yet reported which blocks → WINDSTREAM ARKANSAS, INC. 1691 WILMOT AR
— 870-475 not yet reported which blocks → E. RITTER TEL. CO. 1722 LEPANTO AR
— 870-476 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PARAGOULD AR
— 870-477 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → SOUTHWESTERN BELL 9533 CASH AR
— 870-479 0XXX2XXX4XXX5XXX6XXX · 4 holders which blocks → SOUTHWESTERN BELL 9533 GRADY AR
— 870-480 none assigned yet which blocks → WINDSTREAM ARKANSAS, INC. 1691 BERRYVILLE AR
— 870-481 not yet reported which blocks → BRIGHTSPEED OF NORTHERN ARKANSAS, LLC 1711 MIDWAY AR
— 870-482 2XXX4XXX5XXX · 3 holders which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1143 CARAWAY AR
— 870-483 not yet reported which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1143 TRUMANN AR
— 870-485 6XXX which blocks → WINDSTREAM ARKANSAS, INC. 1691 SWIFTON AR
— 870-486 7XXX8XXX · 2 holders which blocks → BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC 1143 MONETTE AR
— 870-487 not yet reported which blocks → E. RITTER TEL. CO. 1722 TYRONZA AR
— 870-488 2XXX4XXX6XXX7XXX · 3 holders which blocks → BRIGHTSPEED OF NORTHERN ARKANSAS, LLC 1711 HENDERSON AR
— 870-489 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PINE BLUFF AR
— 870-491 1XXX3XXX4XXX8XXX · 3 holders which blocks → BRIGHTSPEED OF NORTHERN ARKANSAS, LLC 1711 TRACYFERRY AR
— 870-492 8XXX which blocks → BRIGHTSPEED OF NORTHERN ARKANSAS, LLC 1711 MALLARD PT AR
— 870-494 0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → SOUTHWESTERN BELL 9533 FORREST CY AR
— 870-496 3XXX5XXX · 2 holders which blocks → WINDSTREAM ARKANSAS, INC. 1691 WITTS SPG AR
— 870-499 1XXX2XXX4XXX6XXX9XXX · 3 holders which blocks → BRIGHTSPEED OF NORTHERN ARKANSAS, LLC 1711 NORFORK AR
— 870-502 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → SOUTHWESTERN BELL 9533 PINE BLUFF AR
— 870-503 none assigned yet which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 NEWPORT AR
— 870-506 1XXX which blocks → TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G BULLSHOALS AR
— 870-507 5XXX6XXX · 2 holders which blocks → CSC VOICE, LLC 612K MIDWAY AR
— 870-508 not yet reported which blocks → BRIGHTSPEED OF NORTHERN ARKANSAS, LLC 1711 MT HOME AR
— 870-510 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 PINE BLUFF AR
— 870-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AR
— 870-512 0XXX5XXX6XXX which blocks → SOUTHWESTERN BELL 9533 NEWPORT AR
— 870-515 2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - AR 348F PINE BLUFF AR
— 870-519 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 FORREST CY AR
— 870-522 0XXX2XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 LEONARD AR
— 870-523 not yet reported which blocks → SOUTHWESTERN BELL 9533 NEWPORT AR
— 870-524 2XXX6XXX8XXX · 3 holders which blocks → CSC VOICE, LLC 612K WALDO AR
— 870-526 not yet reported which blocks → E. RITTER TEL. CO. 1722 KEISER AR
— 870-528 2XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 JESUP AR
— 870-529 2XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 CARRYVILLE AR
— 870-530 4XXX5XXX7XXX8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JONESBORO AR
— 870-531 not yet reported which blocks → E. RITTER TEL. CO. 1722 GARDEN PT AR
— 870-532 0XXX2XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → SOUTHWESTERN BELL 9533 BLYTHEVL AR
— 870-533 0XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → SOUTHWESTERN BELL 9533 STAMPS AR
— 870-534 not yet reported which blocks → SOUTHWESTERN BELL 9533 PINE BLUFF AR
— 870-535 not yet reported which blocks → SOUTHWESTERN BELL 9533 PINE BLUFF AR

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.