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
— 262-798 not yet reported which blocks → WISCONSIN BELL INC 9327 MILWAUKZN2 WI
— 262-802 1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CALEDONIA WI
— 262-804 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 OCONOMOWOC WI
— 262-806 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 BURLINGTON WI
— 262-808 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 WEST BEND WI
— 262-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX WI
— 262-812 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 LAKEGENEVA WI
— 262-813 3XXX6XXX8XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 PALMYRA WI
— 262-814 not yet reported which blocks → WISCONSIN BELL INC 9327 MILWAUKZN2 WI
— 262-818 none assigned yet which blocks → UNITED STATES CELLULAR - WI 6274 PARKSIDE WI
— 262-820 4XXX which blocks → WISCONSIN BELL INC 9327 SUSSEX WI
— 262-821 not yet reported which blocks → WISCONSIN BELL INC 9327 MILWAUKZN2 WI
— 262-822 2XXX3XXX4XXX · 3 holders which blocks → UNITED STATES CELLULAR - WI 6274 RACINE WI
— 262-824 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 CALEDONIA WI
— 262-825 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 MILWAUKZN2 WI
— 262-827 not yet reported which blocks → WISCONSIN BELL INC 9327 MILWAUKZN2 WI
— 262-829 2XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - WI 225C MERTON WI
— 262-832 4XXX which blocks → PAETEC ITEL, LLC 829J WAUKESHA WI
— 262-833 5XXX7XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J RACINE WI
— 262-834 5XXX8XXX which blocks → PAETEC ITEL, LLC 829J THIENSVL WI
— 262-835 7XXX which blocks → WISCONSIN BELL INC 9327 CALEDONIA WI
— 262-836 4XXX which blocks → PAETEC ITEL, LLC 829J JACKSON WI
— 262-841 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 HARTFORD WI
— 262-842 5XXX7XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J KENOSHA WI
— 262-843 5XXX6XXX7XXX · 3 holders which blocks → FRONTIER NORTH INC. - WI 0886 SALEM WI
— 262-846 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 SALEM WI
— 262-853 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN2 WI
— 262-854 0XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 SOMERS WI
— 262-857 0XXX which blocks → FRONTIER NORTH INC. - WI 0886 BRISTOL WI
— 262-859 1XXX5XXX8XXX9XXX · 3 holders which blocks → WISCONSIN BELL INC 9327 SOMERS WI
— 262-860 not yet reported which blocks → WISCONSIN BELL INC 9327 MILWAUKZN2 WI
— 262-862 4XXX8XXX · 2 holders which blocks → FRONTIER NORTH INC. - WI 0886 TREVOR WI
— 262-864 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 UNIONGROVE WI
— 262-865 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 RACINE WI
— 262-866 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 BURLINGTON WI
— 262-869 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 TREVOR WI
— 262-872 0XXX2XXX3XXX4XXX5XXX6XXX8XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 TWIN LAKES WI
— 262-873 1XXX2XXX3XXX7XXX8XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 WAUBEKA WI
— 262-877 1XXX7XXX · 2 holders which blocks → FRONTIER NORTH INC. - WI 0886 TWIN LAKES WI
— 262-878 not yet reported which blocks → WISCONSIN BELL INC 9327 UNIONGROVE WI
— 262-879 4XXX8XXX · 2 holders which blocks → WISCONSIN BELL INC 9327 MILWAUKZN2 WI
— 262-880 none assigned yet which blocks → T-MOBILE USA, INC. 6529 RACINE WI
— 262-882 not yet reported which blocks → SHARON TELEPHONE COMPANY 7747 DARIEN WI
— 262-883 2XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → TDS METROCOM, LLC 520K PARKSIDE WI
— 262-884 not yet reported which blocks → WISCONSIN BELL INC 9327 RACINE WI
— 262-885 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 SILVERLAKE WI
— 262-886 not yet reported which blocks → WISCONSIN BELL INC 9327 RACINE WI
— 262-889 1XXX3XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → FRONTIER NORTH INC. - WI 0886 SILVERLAKE WI
— 262-891 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 BRISTOL WI
— 262-893 none assigned yet 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.