NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 — NPA 262
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 1
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
2022-09-01 262-762 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - WI 225C DELAVAN WI
2022-08-29 262-341 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 ALLENTON WI
2022-08-29 262-371 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 KENOSHA WI
2022-08-24 262-310 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - WI 007F WEST BEND WI
2022-07-28 262-270 0–9 XXXall 10 · 3 holders which blocks → UNITED STATES CELLULAR - WI 6274 RACINE WI
2022-07-28 262-301 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 RACINE WI
2022-01-27 262-838 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MILWAUKZN2 WI
2022-01-07 262-575 5XXX8XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BERGEN WI
2021-11-19 262-276 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - WI 007F HARTFORD WI
2021-11-18 262-304 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - WI 225C CEDARBURG WI
2021-10-15 262-382 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → AT&T - LOCAL 7421 THIENSVL WI
2021-09-16 262-294 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 LAKEGENEVA WI
2021-08-25 262-739 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WIND LAKE WI
2021-08-18 262-286 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - WI 007F KENOSHA WI
2021-08-18 262-433 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H OCONOMOWOC WI
2021-08-18 262-733 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H WHITEWATER WI
2021-07-02 262-466 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 9 holders which blocks → FRACTEL, LLC 965H BURLINGTON WI
2021-07-02 262-566 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H ALLENTON WI
2021-07-02 262-699 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H MENOMONFLS WI
2021-07-01 262-772 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 BURLINGTON WI
2021-06-24 262-274 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - WI 225C CEDARBURG WI
2021-06-23 262-318 1XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - WI 225C NORTH LAKE WI
2021-06-02 262-291 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J JACKSON WI
2021-06-02 262-868 6XXX7XXX8XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H WHEATLAND WI
2021-06-02 262-892 0XXX2XXX3XXX4XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H WILLIAMSBY WI
2021-06-01 262-585 0XXX5XXX8XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H PTWASHIGTN WI
2021-05-27 262-462 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H BRISTOL WI
2021-05-27 262-562 0XXX2XXX3XXX4XXX5XXX6XXX9XXX · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H GENOA CITY WI
2021-05-21 262-273 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 LAKEGENEVA WI
2021-04-14 262-280 0XXX1XXX4XXX5XXX9XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 WATERFORD WI
2021-04-08 262-734 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J RACINE WI
2021-04-08 262-793 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WAUKESHA WI
2021-02-11 262-281 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 WAUKESHA WI
2021-01-22 262-445 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - WI 225C KENOSHA WI
2021-01-12 262-283 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 WAUKESHA WI
2020-11-12 262-254 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - WI 225C OCONOMOWOC WI
2020-10-01 262-267 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → T-MOBILE USA, INC. 6529 DELAVAN WI
2020-09-16 262-362 0–9 XXXall 10 · 6 holders which blocks → TWILIO INTERNATIONAL, INC. 506J MILWAUKZN2 WI
2020-08-31 262-272 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 478J NO ANTIOCH WI
2020-08-20 262-300 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H KENOSHA WI
2020-08-20 262-810 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 THIENSVL WI
2020-08-13 262-266 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 OCONOMOWOC WI
2020-07-08 262-265 0–9 XXXall 10 · 7 holders which blocks → CSC WIRELESS, LLC 425J MILWAUKZN2 WI
2020-06-11 262-578 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ELKHORN WI
2020-02-24 262-655 5XXX which blocks → FRACTEL, LLC 965H BERGEN WI
2020-02-19 262-356 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H BOHNERS LK WI
2020-02-19 262-400 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H JACKSON WI
2020-02-19 262-600 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H HUBERTUS WI
2020-02-19 262-688 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H HARTLAND WI
2020-02-19 262-722 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H WAUKESHA WI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.