NumberResearch Membership · Data 09/21/2026

Recent prefix assignments

338 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026

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
— 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
— 262-894 none assigned yet which blocks → UNITED STATES CELLULAR - WI 6274 MILWAUKZN2 WI
— 262-895 0XXX1XXX5XXX9XXX · 2 holders which blocks → SOUTHEAST TEL. CO. OF WISCONSIN, INC. 0952 WIND LAKE WI
— 262-896 not yet reported which blocks → WISCONSIN BELL INC 9327 WAUKESHA WI
— 262-898 4XXX5XXX which blocks → TDS METROCOM, LLC 520K RACINE WI
— 262-901 5XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J MILWAUKZN2 WI
— 262-903 none assigned yet which blocks → UNITED STATES CELLULAR - WI 6274 LAKEGENEVA WI
— 262-909 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 PARKSIDE WI
— 262-910 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 BIG BEND WI
— 262-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX WI
— 262-912 0XXX1XXX2XXX4XXX5XXX6XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 HARTLAND WI
— 262-914 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KENOSHA WI
— 262-922 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 BIG BEND WI
— 262-923 0XXX6XXX7XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MILWAUKZN2 WI
— 262-924 0XXX1XXX2XXX3XXX5XXX6XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 PARKSIDE WI
— 262-925 2XXX4XXX5XXX which blocks → TDS METROCOM, LLC 520K KENOSHA WI
— 262-928 not yet reported which blocks → WISCONSIN BELL INC 9327 WAUKESHA WI
— 262-930 none assigned yet which blocks → UNITED STATES CELLULAR - WI 6274 CALEDONIA WI
— 262-932 0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 SUSSEX WI
— 262-938 not yet reported which blocks → WISCONSIN BELL INC 9327 MILWAUKZN2 WI
— 262-939 none assigned yet which blocks → UNITED STATES CELLULAR - WI 6274 CALEDONIA WI
— 262-942 not yet reported which blocks → WISCONSIN BELL INC 9327 KENOSHA WI
— 262-945 none assigned yet which blocks → UNITED STATES CELLULAR - WI 6274 PARKSIDE WI
— 262-946 5XXX6XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J MENOMONFLS WI
— 262-947 4XXX which blocks → WISCONSIN BELL INC 9327 KENOSHA WI
— 262-948 9XXX which blocks → WISCONSIN BELL INC 9327 KENOSHA WI
— 262-949 none assigned yet which blocks → UNITED STATES CELLULAR - WI 6274 LAKEGENEVA WI
— 262-950 not yet reported which blocks → WI
— 262-951 0XXX1XXX5XXX6XXX8XXX · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 WAUKESHA WI
— 262-952 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 PARKSIDE WI
— 262-953 not yet reported which blocks → LEVEL 3 TELECOM OF WISCONSIN, LP - WI 7322 WAUKESHA WI
— 262-956 0XXX1XXX2XXX3XXX4XXX5XXX7XXX9XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 PEWAUKEE WI
— 262-957 0XXX4XXX6XXX7XXX9XXX · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 MILWAUKZN2 WI
— 262-958 not yet reported which blocks → WI
— 262-959 not yet reported which blocks → WI
— 262-960 5XXX7XXX8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KENOSHA WI
— 262-965 0XXX1XXX8XXX · 3 holders which blocks → BRIGHTSPEED OF WESTERN WISCONSIN, LLC 0922 DOUSMAN WI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.