NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

338 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, last 30 days
8X8, INC. 38
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
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
2010-07-26 204-402 not yet reported which blocks → TELUS Mobility 8303 Brandon —
2010-07-26 214-931 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2010-07-26 432-244 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARATHON TX
2010-07-26 581-233 not yet reported which blocks → TELUS Mobility 8303 New Carlisle —
2010-07-26 587-988 not yet reported which blocks → TELUS Mobility 8301 Edmonton —
2010-07-26 705-279 not yet reported which blocks → TELUS Mobility 8303 Barrie —
2010-07-26 760-698 0–9 XXXall 10 · 3 holders which blocks → METROPCS NETWORKS, LLC 899D INDIO CA
2010-07-26 817-666 0–9 XXXall 10 · 7 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K CLEBURNE TX
2010-07-26 828-933 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J GRANITEFLS NC
2010-07-23 406-927 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 BILLINGS MT
2010-07-23 435-314 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 EPHRAIM UT
2010-07-23 608-402 0–9 XXXall 10 · 6 holders which blocks → MICHIGAN WIRELESS, LLC DBA BUG TUSSEL WIRELESS 698E BARABOO WI
2010-07-23 616-466 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2010-07-23 715-782 0XXX1XXX2XXX4XXX7XXX9XXX · 4 holders which blocks → MICHIGAN WIRELESS, LLC DBA BUG TUSSEL WIRELESS 698E COLOMA WI
2010-07-23 715-951 0XXX1XXX2XXX7XXX · 2 holders which blocks → MICHIGAN WIRELESS, LLC DBA BUG TUSSEL WIRELESS 698E ALMOND WI
2010-07-23 715-993 0XXX1XXX2XXX3XXX6XXX7XXX · 4 holders which blocks → MICHIGAN WIRELESS, LLC DBA BUG TUSSEL WIRELESS 698E HANCOCK WI
2010-07-23 832-420 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2010-07-23 928-514 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 BULLHEADCY AZ
2010-07-22 240-452 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 HAGERSTOWN MD
2010-07-22 450-376 not yet reported which blocks → Videotron Ltd. 8306 St-Jean —
2010-07-22 772-261 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E JENSEN BCH FL
2010-07-22 778-706 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Vancouver —
2010-07-22 778-707 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Vancouver —
2010-07-22 778-709 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Vancouver —
2010-07-22 778-920 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Quesnel —
2010-07-22 780-730 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 High Level —
2010-07-22 845-237 0–9 XXXall 10 · 7 holders which blocks → WARWICK VALLEY TELEPHONE COMPANY 4967 CORNWALL NY
2010-07-21 484-632 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ALLENTOWN PA
2010-07-21 630-465 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E SUGARGROVE IL
2010-07-21 701-923 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPENCER ND
2010-07-21 813-419 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E TAMPASTH FL
2010-07-20 302-413 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → METROPCS, INC. 5562 NEW CASTLE DE
2010-07-20 424-260 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E CMTN GRDN CA
2010-07-20 424-261 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E INGLEWOOD CA
2010-07-20 424-262 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E REDONDO CA
2010-07-20 424-265 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E REDONDO CA
2010-07-20 424-266 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E CMTN GRDN CA
2010-07-20 450-556 not yet reported which blocks → Videotron Ltd. 8306 Sorel —
2010-07-20 450-994 not yet reported which blocks → Videotron Ltd. 8306 Granby —
2010-07-20 506-800 not yet reported which blocks → Iristel Inc. 154E Moncton —
2010-07-20 605-597 0–9 XXXall 10 · 5 holders which blocks → QWEST CORPORATION 9631 MITCHELL SD
2010-07-20 613-709 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Ottawa-Hull —
2010-07-20 707-378 0–9 XXXall 10 · 6 holders which blocks → CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 2308 RIO VISTA CA
2010-07-20 708-252 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2010-07-20 709-213 not yet reported which blocks → TELUS Mobility 8303 Freshwater —
2010-07-20 832-509 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2010-07-19 305-791 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E KEYS FL
2010-07-19 305-814 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E KEYS FL
2010-07-19 402-919 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FREMONT NE
2010-07-19 408-785 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E SNJS WEST CA

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.