NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2018-07-06 712-897 7XXX9XXX · 2 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 1170 AVOCA IA
2018-02-01 712-206 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 ARMSTRONG IA
2018-01-31 712-280 0XXX1XXX2XXX7XXX8XXX9XXX · 5 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 1170 HARLAN IA
2016-08-11 712-532 0–9 XXXall 10 · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 EMMETSBURG IA
2016-07-25 712-205 0XXX1XXX4XXX7XXX8XXX9XXX · 6 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 1170 AUDUBON IA
2015-06-25 712-290 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 ROCKWELLCY IA
2015-06-25 712-467 4XXX7XXX8XXX9XXX · 4 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 SIDNEY IA
2015-06-25 712-695 0XXX2XXX4XXX5XXX7XXX9XXX · 6 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 CLARINDA IA
2015-06-25 712-992 2XXX7XXX9XXX · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 LOGAN IA
2012-07-23 712-377 0XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 GRAVITY IA
2011-12-09 712-459 0XXX1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 HARTLEY IA
2007-02-04 712-922 0XXX1XXX2XXX3XXX4XXX5XXX9XXX · 4 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 EMMETSBURG IA
— 712-268 0XXX3XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 1170 EXIRA IA
— 712-272 2XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 NEWELL IA
— 712-286 2XXX3XXX7XXX8XXX9XXX · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 REMBRANDT IA
— 712-288 0XXX2XXX3XXX7XXX8XXX · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 FONDA IA
— 712-289 3XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 MARATHON IA
— 712-295 2XXX4XXX8XXX9XXX · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 PETERSON IA
— 712-296 2XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 LINN GROVE IA
— 712-297 0XXX2XXX3XXX4XXX6XXX · 4 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 ROCKWELLCY IA
— 712-343 7XXX which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 1170 AVOCA IA
— 712-349 0XXX3XXX4XXX7XXX8XXX · 4 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 HARRIS IA
— 712-374 0XXX7XXX8XXX9XXX · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 SIDNEY IA
— 712-387 4XXX7XXX8XXX which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 RIVERTON IA
— 712-424 0XXX2XXX4XXX7XXX · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 CYLINDER IA
— 712-425 0XXX2XXX4XXX7XXX8XXX · 4 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 MALLARD IA
— 712-448 0XXX5XXX7XXX8XXX · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 PAULLINA IA
— 712-452 3XXX4XXX which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 BLENCOE IA
— 712-456 3XXX4XXX which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 PISGAH IA
— 712-464 0XXX6XXX · 2 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 LAKE CITY IA
— 712-465 0XXX7XXX · 2 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 LOHRVILLE IA
— 712-466 0XXX3XXX4XXX6XXX7XXX · 4 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 LYTTON IA
— 712-468 0XXX3XXX4XXX5XXX7XXX · 4 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 POMEROY IA
— 712-469 0XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 MANSON IA
— 712-483 none assigned yet which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 1170 MINDEN IA
— 712-488 4XXX5XXX8XXX · 2 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 PERSIA IA
— 712-489 4XXX7XXX8XXX · 2 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 PANAMA IA
— 712-529 0XXX2XXX3XXX6XXX8XXX9XXX · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 PERCIVAL IA
— 712-537 3XXX7XXX · 2 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 GRAVITY IA
— 712-542 none assigned yet which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 CLARINDA IA
— 712-544 4XXX5XXX · 2 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 1170 SHELBY IA
— 712-563 6XXX7XXX8XXX · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 1170 AUDUBON IA
— 712-582 0XXX5XXX7XXX8XXX · 2 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 COLLEGESPG IA
— 712-589 0XXX4XXX5XXX6XXX · 2 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 BRADDYVL IA
— 712-625 0XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 RANDOLPH IA
— 712-628 5XXX6XXX7XXX which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 THURMAN IA
— 712-629 0XXX which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 TABOR IA
— 712-643 3XXX6XXX7XXX · 2 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 DUNLAP IA
— 712-644 6XXX8XXX · 2 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 LOGAN IA
— 712-645 3XXX6XXX which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 1167 MODALE IA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.