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
2020-02-19 262-766 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H EAST TROY WI
2020-02-19 262-799 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H MILWAUKZN2 WI
2020-02-19 262-855 0XXX5XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H SHARON WI
2020-02-19 262-944 1XXX2XXX3XXX4XXX6XXX7XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H WALWORTH WI
2020-01-24 262-900 0–9 XXXall 10 · 5 holders which blocks → TERRA NOVA TELECOM INC. 145J RACINE WI
2019-10-31 262-263 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 OCONOMOWOC WI
2018-12-05 262-731 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → VONAGE AMERICA LLC 197D WHITEWATER WI
2018-11-13 262-256 0XXX1XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - WI 007F DELAFIELD WI
2018-11-05 262-259 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K WAUKESHA WI
2018-10-17 262-258 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F WHITEWATER WI
2018-09-28 262-234 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 RACINE WI
2018-09-05 262-230 0–9 XXXall 10 · 7 holders which blocks → AIRESPRING, INC. 996H MILWAUKZN2 WI
2018-08-22 262-217 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - WI 225C GENOA CITY WI
2018-05-24 262-771 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KENOSHA WI
2018-05-14 262-606 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN2 WI
2018-05-01 262-282 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAUKESHA WI
2018-04-24 262-755 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAKEGENEVA WI
2018-04-09 262-216 0–9 XXXall 10 · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K HARTFORD WI
2017-10-03 262-218 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J WIND LAKE WI
2017-09-26 262-666 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - WI 225C WAUKESHA WI
2017-04-13 262-665 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSON WI
2017-03-07 262-277 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H NEWBURG WI
2017-03-07 262-399 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H WAUKESHA WI
2017-03-07 262-525 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H HUBERTUS WI
2017-01-25 262-420 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAUKESHA WI
2016-12-05 262-330 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H MILWAUKZN2 WI
2016-10-14 262-351 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 KENOSHA WI
2016-09-28 262-693 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 MILWAUKZN2 WI
2016-06-01 262-698 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - WI 225C BURLINGTON WI
2016-03-15 262-307 0–9 XXXall 10 · 3 holders which blocks → UNITED STATES CELLULAR - WI 6274 MILWAUKZN2 WI
2016-03-08 262-205 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - WI 225C WILLIAMSBY WI
2016-01-05 262-202 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN2 WI
2016-01-05 262-747 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - WI 225C UNIONGROVE WI
2015-11-25 262-475 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 LAKEGENEVA WI
2015-08-13 262-444 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - WI 225C WAUKESHA WI
2015-07-07 262-239 0–9 XXXall 10 · 3 holders which blocks → UNITED STATES CELLULAR - WI 6274 HUBERTUS WI
2015-06-11 262-933 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 WAUKESHA WI
2015-05-20 262-233 0–9 XXXall 10 · 5 holders which blocks → UNITED STATES CELLULAR - WI 6274 DELAVAN WI
2015-05-11 262-788 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - WI 225C MILWAUKZN2 WI
2015-02-17 262-999 0–9 XXXwhole prefix which blocks → ONVOY, LLC - WI 225C MILWAUKZN2 WI
2015-01-27 262-333 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - WI 225C WAUKESHA WI
2014-12-12 262-975 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → UNITED STATES CELLULAR - WI 6274 NO PRAIRIE WI
2014-11-20 262-383 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J RACINE WI
2014-11-13 262-583 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 RACINE WI
2014-09-29 262-899 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 WAUKESHA WI
2014-09-23 262-875 0–9 XXXall 10 · 4 holders which blocks → AT&T ENTERPRISES, LLC 516C WAUKESHA WI
2014-09-16 262-599 0–9 XXXall 10 · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J MILWAUKZN2 WI
2014-09-15 262-219 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 WAUKESHA WI
2013-10-08 262-505 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 MILWAUKZN2 WI
2013-09-09 262-232 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 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.