NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 68
QWEST CORPORATION 64
WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 48
NEW CINGULAR WIRELESS PCS, LLC - IL 43
ONVOY, LLC - IA 30
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
— 712-426 not yet reported which blocks → AYRSHIRE FARMERS MUTUAL TEL. CO. 1105 AYRSHIRE IA
— 712-428 not yet reported which blocks → NORTHWEST IOWA TELEPHONE, LLC 1260 SLOAN IA
— 712-431 4XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 ONAWA IA
— 712-433 not yet reported which blocks → COMMCHOICE OF IOWA, LLC 4092 ONAWA IA
— 712-434 not yet reported which blocks → PEOPLES TEL. CO. 1273 AURELIA IA
— 712-436 not yet reported which blocks → C-M-L TEL. COOP. ASSN. OF MERIDEN IOWA 1133 CLEGHORN IA
— 712-437 not yet reported which blocks → C-M-L TEL. COOP. ASSN. OF MERIDEN IOWA 1133 LARRABEE IA
— 712-438 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 CLARINDA IA
— 712-439 6XXX which blocks → HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 1109 HULL IA
— 712-441 none assigned yet which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SIOUX CTR IA
— 712-443 not yet reported which blocks → C-M-L TEL. COOP. ASSN. OF MERIDEN IOWA 1133 MERIDEN IA
— 712-445 not yet reported which blocks → WEST IOWA TEL. CO. 1331 QUIMBY IA
— 712-446 not yet reported which blocks → WEST IOWA TEL. CO. 1331 SUTHERLAND IA
— 712-447 not yet reported which blocks → FRONTIER COMMUNICATIONS OF IOWA, INC. 1127 WASHTA IA
— 712-448 0XXX5XXX7XXX8XXX · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. 1178 PAULLINA IA
— 712-449 5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SIOUX CTR IA
— 712-450 1XXX2XXX3XXX4XXX · 4 holders which blocks → UNITED STATES CELLULAR - IA 6266 LAURENS 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
— 712-458 0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → QWEST CORPORATION 9631 WHITING IA
— 712-460 2XXX3XXX4XXX5XXX8XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROCKVALLEY IA
— 712-461 7XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SIBLEY 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
— 712-470 8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROCKVALLEY IA
— 712-472 0XXX which blocks → HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 1109 ROCKRAPIDS IA
— 712-473 not yet reported which blocks → ALLIANCE COMMUNICATIONS COOPERATIVE, INC. - IA 1405 ALVORD IA
— 712-475 5XXX6XXX7XXX9XXX · 3 holders which blocks → FRONTIER COMMUNICATIONS OF IOWA, INC. 1127 GEORGE IA
— 712-476 none assigned yet which blocks → HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS 1109 ROCKVALLEY IA
— 712-477 not yet reported which blocks → ALLIANCE COMMUNICATIONS COOPERATIVE, INC. - IA 1405 LARCHWOOD IA
— 712-478 not yet reported which blocks → ALLIANCE COMMUNICATIONS COOPERATIVE, INC. - IA 1405 LESTER IA
— 712-479 not yet reported which blocks → NORTHERN IOWA TEL. CO. 1259 LITTLEROCK IA
— 712-480 1XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → UNITED STATES CELLULAR - IA 6266 EMMETSBURG IA
— 712-482 1XXX2XXX7XXX · 2 holders which blocks → FRONTIER COMMUNICATIONS OF IOWA, INC. 1127 OAKLAND IA
— 712-483 none assigned yet which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 1170 MINDEN IA
— 712-484 1XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → FRONTIER COMMUNICATIONS OF IOWA, INC. 1127 CARSON IA
— 712-485 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → QWEST CORPORATION 9631 NEOLA IA
— 712-486 not yet reported which blocks → BREDA TEL. CORP. 1112 MACEDONIA IA
— 712-487 1XXX2XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → FRONTIER COMMUNICATIONS OF IOWA, INC. 1127 TREYNOR 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
— 712-490 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 SIOUX CITY IA
— 712-507 not yet reported which blocks → IA
— 712-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IA
— 712-515 not yet reported which blocks → IA
— 712-520 5XXX6XXX8XXX9XXX · 3 holders which blocks → UNITED STATES CELLULAR - IA 6266 GLENWOOD IA
— 712-523 1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → FRONTIER COMMUNICATIONS OF IOWA, INC. 1127 BEDFORD IA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.