NumberResearch Membership · Data 09/21/2026

Recent prefix assignments

0 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, all time — NPA 712
WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 48
WINDSTREAM IOWA COMMUNICATIONS, INC. 20
WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 712-646 3XXX4XXX6XXX · 2 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 MONDAMIN IA
— 712-647 none assigned yet which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 WOODBINE IA
— 712-648 4XXX7XXX which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 MAGNOLIA IA
— 712-649 3XXX6XXX which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 LTL SIOUX IA
— 712-651 0XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 1170 BAYARD IA
— 712-653 0XXX6XXX7XXX8XXX · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 1170 MANNING IA
— 712-656 0XXX3XXX5XXX6XXX7XXX · 4 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 LANESBORO IA
— 712-657 4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 LAKE VIEW IA
— 712-658 3XXX4XXX5XXX · 2 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 1170 HALBUR IA
— 712-659 none assigned yet which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 GLIDDEN IA
— 712-667 2XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 RALSTON IA
— 712-676 4XXX6XXX7XXX · 2 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 SCHLESWIG IA
— 712-677 3XXX4XXX6XXX7XXX · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 VAIL IA
— 712-679 4XXX7XXX which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 RICKETTS IA
— 712-683 2XXX3XXX4XXX6XXX · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 DEDHAM IA
— 712-684 4XXX6XXX8XXX · 2 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 COONRAPIDS IA
— 712-688 3XXX4XXX5XXX6XXX · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 AUBURN IA
— 712-728 0XXX7XXX8XXX · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 HARTLEY 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
— 712-743 0XXX4XXX7XXX8XXX · 2 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 PORTSMOUTH IA
— 712-755 6XXX which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 1170 HARLAN 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
— 712-843 0XXX3XXX4XXX6XXX7XXX8XXX · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 ALBERTCITY IA
— 712-848 0XXX2XXX4XXX7XXX8XXX · 4 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 ROLFE IA
— 712-852 0XXX6XXX7XXX · 2 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 EMMETSBURG 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
— 712-885 4XXX5XXX7XXX · 2 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 UTE IA

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.