NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

337 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 25
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 12
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
— 712-790 none assigned yet which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 CARROLL IA
— 712-792 not yet reported which blocks → QWEST CORPORATION 9631 CARROLL IA
— 712-794 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → QWEST CORPORATION 9631 CARROLL IA
— 712-799 not yet reported which blocks → FARMERS MUTUAL COOP. TEL. CO. 1168 JACKSONVL IA
— 712-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IA
— 712-822 not yet reported which blocks → BREDA TEL. CORP. 1112 LIDDERDALE IA
— 712-824 not yet reported which blocks → SOUTHWEST TEL. EXCH., INC. 1301 EMERSON IA
— 712-825 not yet reported which blocks → SOUTHWEST TEL. EXCH., INC. 1301 HENDERSON IA
— 712-826 not yet reported which blocks → FARMERS MUTUAL TELEPHONE COMPANY 1174 VILLISCA IA
— 712-827 0XXX7XXX which blocks → WESTERN IOWA TEL. ASSN. 1334 OTO IA
— 712-829 not yet reported which blocks → FARMERS MUTUAL TELEPHONE COMPANY 1174 STANTON IA
— 712-830 none assigned yet which blocks → UNITED STATES CELLULAR - IA 6266 LIDDERDALE IA
— 712-832 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → QWEST CORPORATION 9631 LAKE PARK IA
— 712-834 not yet reported which blocks → UNITED FARMERS TEL. CO. 1316 EVERLY IA
— 712-835 not yet reported which blocks → AYRSHIRE FARMERS MUTUAL TEL. CO. 1105 GILLETTGRV IA
— 712-836 not yet reported which blocks → WEBB-DICKENS TEL. CORP. 1327 DICKENS IA
— 712-837 not yet reported which blocks → RIVER VALLEY TELECOMMUNICATIONS COOP. 1189 RUTHVEN IA
— 712-838 not yet reported which blocks → WEBB-DICKENS TEL. CORP. 1327 WEBB IA
— 712-840 2XXX4XXX7XXX8XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 MAPLETON IA
— 712-841 not yet reported which blocks → LAURENS MUNICIPAL COMMUNICATIONS UTILITY - IA 4115 LAURENS IA
— 712-843 0XXX3XXX4XXX6XXX7XXX8XXX · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 ALBERTCITY IA
— 712-844 not yet reported which blocks → IA
— 712-845 0XXX1XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IA 9877 LAURENS IA
— 712-847 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → COMCAST IP PHONE, LLC 318J CARTERLAKE IA
— 712-848 0XXX2XXX4XXX7XXX8XXX · 4 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 ROLFE IA
— 712-851 not yet reported which blocks → ALLIANCE COMMUNICATIONS COOPERATIVE, INC. - IA 1405 SO STEEN IA
— 712-852 0XXX6XXX7XXX · 2 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 EMMETSBURG IA
— 712-853 not yet reported which blocks → TERRIL TELEPHONE COOPERATIVE 1309 TERRIL IA
— 712-855 not yet reported which blocks → NORTHWEST TEL. COOP. ASSN. 1261 CURLEW IA
— 712-857 not yet reported which blocks → NORTHWEST TEL. COOP. ASSN. 1261 PLOVER IA
— 712-858 not yet reported which blocks → SUPERIOR TEL. COOP. 1307 SUPERIOR IA
— 712-859 not yet reported which blocks → RIVER VALLEY TELECOMMUNICATIONS COOP. 1189 GRAETTINGR IA
— 712-864 0XXX4XXX6XXX8XXX · 4 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 ARMSTRONG IA
— 712-865 0XXX5XXX6XXX7XXX · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 DOLLIVER IA
— 712-866 not yet reported which blocks → RINGSTED TEL. CO. 1280 RINGSTED IA
— 712-867 not yet reported which blocks → RIVER VALLEY TELECOMMUNICATIONS COOP. 1189 WALLINGFD IA
— 712-868 not yet reported which blocks → INDEPENDENT NETWORKS, LLC 7215 ARMSTRONG IA
— 712-873 7XXX8XXX · 2 holders which blocks → WESTERN IOWA TEL. ASSN. 1334 MOVILLE IA
— 712-874 7XXX which blocks → WESTERN IOWA TEL. ASSN. 1334 HORNICK IA
— 712-876 0XXX7XXX · 2 holders which blocks → WESTERN IOWA TEL. ASSN. 1334 CLIMBINGHL IA
— 712-880 3XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 MAPLETON IA
— 712-882 0XXX7XXX8XXX · 2 holders which blocks → QWEST CORPORATION 9631 MAPLETON IA
— 712-883 0XXX1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → QWEST CORPORATION 9631 DANBURY IA
— 712-884 not yet reported which blocks → JORDAN-SOLDIER VALLEY TELEPHONE COMPANY 1213 SOLDIER IA
— 712-885 4XXX5XXX7XXX · 2 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 UTE IA
— 712-886 not yet reported which blocks → JORDAN-SOLDIER VALLEY TELEPHONE COMPANY 1213 MOORHEAD IA
— 712-887 5XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 ROCKWELLCY IA
— 712-889 0XXX7XXX · 2 holders which blocks → WESTERN IOWA TEL. ASSN. 1334 SMITHLAND IA
— 712-890 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 COUNCILBLF IA
— 712-898 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 SIOUX CITY IA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.