NumberResearch Membership · Data 09/23/2026

Recent prefix assignments

338 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/23/2026

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. 39
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 15
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
— 712-757 7XXX which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 PRIMGHAR IA
— 712-758 0XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 OCHEYEDAN IA
— 712-762 not yet reported which blocks → WEST IOWA TEL. CO. 1331 ANITA IA
— 712-763 not yet reported which blocks → GRISWOLD COOP. TEL. CO. 1195 GRANT IA
— 712-764 not yet reported which blocks → MARNE & ELK HORN TEL. CO. 1237 ELK HORN IA
— 712-766 not yet reported which blocks → FARMERS MUTUAL COOP. TEL. CO. 1168 KIRKMAN IA
— 712-767 not yet reported which blocks → GRISWOLD COOP. TEL. CO. 1195 ELLIOTT IA
— 712-769 not yet reported which blocks → GRISWOLD COOP. TEL. CO. 1195 LEWIS IA
— 712-773 not yet reported which blocks → MARNE & ELK HORN TEL. CO. 1237 KIMBALLTON IA
— 712-774 not yet reported which blocks → CUMBERLAND TEL. CO. 1146 CUMBERLAND IA
— 712-776 not yet reported which blocks → NORTHWEST TEL. COOP. ASSN. 1261 HAVELOCK IA
— 712-777 not yet reported which blocks → ALLIANCE COMMUNICATIONS COOPERATIVE, INC. - IA 1405 SO VLY SPG IA
— 712-778 not yet reported which blocks → GRISWOLD COOP. TEL. CO. 1195 GRISWOLD IA
— 712-779 not yet reported which blocks → MASSENA TEL. CO. 1239 MASSENA IA
— 712-781 not yet reported which blocks → MARNE & ELK HORN TEL. CO. 1237 MARNE IA
— 712-782 not yet reported which blocks → FARMERS MUTUAL COOP. TEL. CO. 1168 IRWIN IA
— 712-783 not yet reported which blocks → MASSENA TEL. CO. 1239 WIOTA IA
— 712-784 not yet reported which blocks → MARNE & ELK HORN TEL. CO. 1237 WALNUT IA
— 712-785 not yet reported which blocks → FARMERS MUTUAL TELEPHONE COMPANY 1174 NODAWAY IA
— 712-786 not yet reported which blocks → WEST IOWA TEL. CO. 1331 REMSEN IA
— 712-789 6XXX8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 GRISWOLD IA
— 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

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.