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
Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 712-707 not yet reported which blocks → ORANGE CITY COMMUNICATIONS, LLP - IA 9769 ORANGECITY IA
— 712-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IA
— 712-712 not yet reported which blocks → IA
— 712-722 not yet reported which blocks → MUTUAL TEL. CO. 1252 SIOUX CTR IA
— 712-723 not yet reported which blocks → C-M-L TEL. COOP. ASSN. OF MERIDEN IOWA 1133 ARCHER IA
— 712-724 7XXX8XXX9XXX · 2 holders which blocks → FRONTIER COMMUNICATIONS OF IOWA, INC. 1127 ASHTON IA
— 712-725 6XXX which blocks → HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 1109 BOYDEN IA
— 712-726 6XXX which blocks → HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 1109 DOON IA
— 712-727 not yet reported which blocks → NORTHERN IOWA TEL. CO. 1259 GRANVILLE IA
— 712-728 0XXX7XXX8XXX · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 HARTLEY IA
— 712-729 not yet reported which blocks → NORTHERN IOWA TEL. CO. 1259 SANBORN IA
— 712-730 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → UNITED STATES CELLULAR - IA 6266 STORM LAKE IA
— 712-732 not yet reported which blocks → QWEST CORPORATION 9631 STORM LAKE IA
— 712-735 0XXX3XXX5XXX7XXX · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 MAY CITY IA
— 712-736 0XXX3XXX4XXX6XXX7XXX · 4 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 MELVIN IA
— 712-737 7XXX9XXX · 2 holders which blocks → FRONTIER COMMUNICATIONS OF IOWA, INC. 1127 ORANGECITY IA
— 712-738 not yet reported which blocks → NORTHERN IOWA TEL. CO. 1259 MATLOCK IA
— 712-741 not yet reported which blocks → FARMERS MUTUAL COOP. TEL. CO. 1168 HANCOCK IA
— 712-743 0XXX4XXX7XXX8XXX · 2 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 PORTSMOUTH IA
— 712-744 not yet reported which blocks → FARMERS MUTUAL COOP. TEL. CO. 1168 HARLAN IA
— 712-746 0XXX1XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → QWEST CORPORATION 9631 E HARRISBG IA
— 712-747 not yet reported which blocks → FARMERS MUTUAL COOP. TEL. CO. 1168 EARLING IA
— 712-748 not yet reported which blocks → FARMERS MUTUAL COOP. TEL. CO. 1168 DEFIANCE IA
— 712-749 0XXX8XXX9XXX · 2 holders which blocks → QWEST CORPORATION 9631 STORM LAKE IA
— 712-752 not yet reported which blocks → HOSPERS TEL. EXCH., INC. 1202 HOSPERS IA
— 712-753 not yet reported which blocks → ALLIANCE COMMUNICATIONS COOPERATIVE, INC. - IA 1405 INWOOD IA
— 712-754 not yet reported which blocks → HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 1109 SIBLEY IA
— 712-755 6XXX which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 1170 HARLAN IA
— 712-756 not yet reported which blocks → WEST IOWA TEL. CO. 1331 ALTON IA
— 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

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.