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
2013-08-14 262-765 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 WAUKESHA WI
2013-04-11 262-214 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F WHITEWATER WI
2013-04-11 262-419 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F JACKSON WI
2012-12-24 262-800 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - WI 225C RACINE WI
2012-12-24 262-888 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - WI 225C WAUKESHA WI
2012-12-20 262-336 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 WAUKESHA WI
2012-10-17 262-777 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - WI 225C MILWAUKZN2 WI
2012-08-02 262-289 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN2 WI
2012-08-02 262-977 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 RACINE WI
2012-07-31 262-226 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 WAUKESHA WI
2012-02-17 262-648 0–9 XXXwhole prefix which blocks → ONVOY, LLC - WI 225C MILWAUKZN2 WI
2011-12-22 262-425 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → AT&T ENTERPRISES, LLC 516C SOMERS WI
2011-02-28 262-955 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 WAUKESHA WI
2010-11-04 262-278 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K WAUKESHA WI
2010-10-18 262-624 0XXX1XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K NO ANTIOCH WI
2010-10-06 262-409 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 WAUKESHA WI
2010-09-30 262-720 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 WAUKESHA WI
2010-05-26 262-422 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 WAUKESHA WI
2010-02-01 262-329 0–9 XXXwhole prefix which blocks → WISCONSIN BELL INC 9327 CEDARBURG WI
2009-11-02 262-290 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAUKESHA WI
2008-12-11 262-221 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RACINE WI
2008-07-30 262-212 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J WAUKESHA WI
2008-07-03 262-220 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KENOSHA WI
2008-06-27 262-225 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAUKESHA WI
2008-01-22 262-704 0–9 XXXwhole prefix which blocks → WISCONSIN BELL INC 9327 MENOMONFLS WI
2007-10-10 262-393 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 ALLENTON WI
2007-09-06 262-309 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAUKESHA WI
2007-07-30 262-379 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → UNITED STATES CELLULAR - WI 6274 ELKHORN WI
2006-08-29 262-527 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAUKESHA WI
2006-04-24 262-501 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAUKESHA WI
2005-12-01 262-402 0–9 XXXall 10 · 4 holders which blocks → CENTRAL WISCONSIN COMMUNICATIONS, INC. - WI 997C MILWAUKZN2 WI
2005-11-29 262-416 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEWBURG WI
2005-11-17 262-349 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 WAUKESHA WI
2005-07-20 262-439 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - WI 225C MILWAUKZN2 WI
2004-07-20 262-201 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K GENESEE WI
2004-06-18 262-200 0–9 XXXall 10 · 6 holders which blocks → WISCONSIN BELL INC 9327 OCONOMOWOC WI
2002-08-28 262-389 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN2 WI
2002-08-20 262-297 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 SLINGER WI
2002-08-20 262-298 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 TREVOR WI
2002-08-20 262-299 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 ALLENTON WI
2002-08-20 262-447 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 WAUBEKA WI
2002-08-20 262-448 0XXX1XXX2XXX3XXX6XXX7XXX8XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 TWIN LAKES WI
2002-08-20 262-476 0XXX2XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 BELGIUM WI
2002-08-20 262-477 0XXX1XXX2XXX3XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 KEWASKUM WI
2002-07-22 262-607 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → UNITED STATES CELLULAR - WI 6274 WILLIAMSBY WI
2002-07-17 262-229 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 HUBERTUS WI
2002-05-29 262-732 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 TELECOM OF WISCONSIN, LP - WI 7322 CALEDONIA WI
2002-05-14 262-485 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 PALMYRA WI
2002-05-14 262-582 2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 SULLIVAN WI
2002-05-14 262-982 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 GENESEE 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.