NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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
Rogers Communications Canada Inc. (Wireless) 23
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
2020-06-25 873-875 not yet reported which blocks → Fibernetics Corporation 464D Buckingham —
2020-06-25 906-210 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CSC WIRELESS, LLC 425J MARQUETTE MI
2020-06-25 947-224 0–9 XXXall 10 · 5 holders which blocks → CSC WIRELESS, LLC 425J SOUTHFIELD MI
2020-06-25 989-318 0–9 XXXall 10 · 5 holders which blocks → CSC WIRELESS, LLC 425J BAY CITY MI
2020-06-24 202-773 0–9 XXXall 10 · 2 holders which blocks → NUSO, LLC 551G WSHNGTNZN1 DC
2020-06-24 269-256 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLCV - MI 543C MARSHALL MI
2020-06-24 386-284 0–9 XXXall 10 · 3 holders which blocks → 1ST POINT COMMUNICATIONS, LLC 489J JASPER FL
2020-06-24 445-223 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHLDLPHZN1 PA
2020-06-24 501-430 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 BENTON AR
2020-06-24 513-669 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F LTL MIAMI OH
2020-06-24 616-612 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLCV - MI 543C GRANDHAVEN MI
2020-06-24 909-619 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E S BERNDINO CA
2020-06-24 912-469 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HINESVILLE GA
2020-06-24 929-546 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NWYRCYZN11 NY
2020-06-24 929-547 0–9 XXXall 10 · 5 holders which blocks → CABLEVISION LIGHTPATH, INC. - NY 7126 NWYRCYZN11 NY
2020-06-24 929-548 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN11 NY
2020-06-24 929-549 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN07 NY
2020-06-24 929-552 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 NWYRCYZN06 NY
2020-06-24 929-553 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 NWYRCYZN09 NY
2020-06-24 947-223 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLCV - MI 543C COMMERCE MI
2020-06-24 986-400 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H CASCADE ID
2020-06-24 986-444 0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 6 holders which blocks → FRACTEL, LLC 965H SWEET ID
2020-06-24 986-800 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H IDAHOFALLS ID
2020-06-23 361-677 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H C CHRISTI TX
2020-06-23 409-348 0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H FANNETT TX
2020-06-23 431-404 not yet reported which blocks → LES.NET (1996) Inc. 141F Emerson —
2020-06-23 581-662 not yet reported which blocks → Fibernetics Corporation 464D Loretteville —
2020-06-23 581-663 not yet reported which blocks → Fibernetics Corporation 464D Notre-Dame-des-Laurentides —
2020-06-23 581-666 not yet reported which blocks → Fibernetics Corporation 464D Ste-Catherine —
2020-06-23 682-345 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H GRAPEVINE TX
2020-06-23 682-356 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H CLEBURNE TX
2020-06-23 682-600 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H ARLINGTON TX
2020-06-23 774-431 0XXX2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 AUBURN MA
2020-06-23 804-964 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H RICHMOND VA
2020-06-23 830-348 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H COTULLA TX
2020-06-23 940-356 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H QUANAH TX
2020-06-23 947-941 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLCV - MI 543C ROYAL OAK MI
2020-06-22 207-804 0–9 XXXall 10 · 5 holders which blocks → BELL ATLANTIC MOBILE, INC 6386 WINDHAM ME
2020-06-22 224-451 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC 224C BARRINGTON IL
2020-06-22 254-544 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H SO BOSQUE TX
2020-06-22 346-677 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H BAYTOWN TX
2020-06-22 346-786 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H SPRING TX
2020-06-22 414-441 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - WI 225C MILWAUKZN3 WI
2020-06-22 430-272 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 ATHENS TX
2020-06-22 431-402 not yet reported which blocks → LES.NET (1996) Inc. 141F Altona —
2020-06-22 431-403 not yet reported which blocks → LES.NET (1996) Inc. 141F Beausejour —
2020-06-22 431-405 not yet reported which blocks → LES.NET (1996) Inc. 141F Grandview —
2020-06-22 431-406 not yet reported which blocks → LES.NET (1996) Inc. 141F Rivers —
2020-06-22 469-842 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H PROSPER TX
2020-06-22 470-610 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E ATLANTA NE GA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.