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
2022-02-18 712-633 3XXX7XXX8XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BEDFORD IA
2022-02-18 712-863 4XXX8XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CARSON IA
2022-02-16 712-952 2XXX9XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 OTO IA
2022-01-26 712-671 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IA 9877 SHENANDOAH IA
2021-12-30 712-406 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J COUNCILBLF IA
2021-12-08 712-414 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 8 holders which blocks → BANDWIDTH.COM CLEC, LLC - IA 985E RED OAK IA
2021-12-02 712-895 0–9 XXXall 10 · 2 holders which blocks → TWILIO INTERNATIONAL, INC. 506J SIOUX CITY IA
2021-11-22 712-962 7XXX which blocks → ONVOY, LLC - IA 221F MIDLAND IA
2021-11-15 712-499 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H SIOUX CITY IA
2021-08-19 712-692 0XXX1XXX2XXX · 3 holders which blocks → AUREON COMMUNICATIONS, LLC 444G ALBERTCITY IA
2021-08-12 712-640 0XXX1XXX6XXX7XXX · 4 holders which blocks → WEBSTER-CALHOUN TELEPHONE ASSOCIATION - IA 482J LAKE CITY IA
2021-08-10 712-413 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SIOUX CITY IA
2021-08-10 712-694 1XXX which blocks → MCC TELEPHONY OF IOWA, LLC - IA 751F CUSHING IA
2021-07-21 712-408 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NO HOPKINS IA
2021-06-23 712-612 1XXX6XXX7XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H E HARRISBG IA
2021-04-29 712-833 0–9 XXXall 10 · 2 holders which blocks → TERRA NOVA TELECOM INC. 145J SIOUX CITY IA
2021-04-02 712-405 1XXX which blocks → MCC TELEPHONY OF IOWA, LLC - IA 751F KIRON IA
2021-04-02 712-710 0–9 XXXall 10 · 4 holders which blocks → COMMIO, LLC 939H SIOUX CITY IA
2021-04-01 712-564 0–9 XXXall 10 · 2 holders which blocks → IP HORIZON LLC 515J SIOUX CITY IA
2021-03-30 712-637 0–9 XXXwhole prefix which blocks → GREAT LAKES COMMUNICATION CORP. - IA 345D LAKE PARK IA
2021-03-19 712-901 1XXX9XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H ROCKWELLCY IA
2021-03-12 712-572 1XXX2XXX4XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - IA 221F HARLAN IA
2021-03-10 712-742 0XXX2XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - IA 221F PAULLINA IA
2021-03-03 712-672 0XXX1XXX2XXX3XXX7XXX · 2 holders which blocks → ONVOY, LLC - IA 221F ROCKWELLCY IA
2021-01-20 712-713 0–9 XXXall 10 · 7 holders which blocks → GREAT PLAINS BROADBAND, INC. - NE 012E COUNCILBLF IA
2021-01-15 712-561 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 COUNCILBLF IA
2020-12-22 712-397 0XXX1XXX2XXX7XXX · 3 holders which blocks → ONVOY, LLC - IA 221F WHITING IA
2020-12-09 712-398 1XXX8XXX9XXX · 3 holders which blocks → STRATUS NETWORKS 495J ONAWA IA
2020-09-23 712-399 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 6 holders which blocks → QWEST CORPORATION 9631 MALVERN IA
2020-07-23 712-685 0–9 XXXall 10 · 2 holders which blocks → CSC WIRELESS, LLC 425J SIOUX CITY IA
2020-07-20 712-788 0XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H ORANGECITY IA
2020-07-20 712-877 6XXX7XXX · 2 holders which blocks → FRACTEL, LLC 965H HULL IA
2020-07-20 712-966 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H LE MARS IA
2020-07-20 712-977 0XXX1XXX4XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H MILFORD IA
2020-07-06 712-565 2XXX5XXX6XXX7XXX · 3 holders which blocks → WEBSTER-CALHOUN TELEPHONE ASSOCIATION - IA 482J LOHRVILLE IA
2020-05-26 712-666 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H SIOUX CITY IA
2020-01-16 712-771 0–9 XXXwhole prefix which blocks → EDGETEL, LLC 179J CARROLL IA
2019-12-27 712-356 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H ATLANTIC IA
2019-12-19 712-842 1XXX5XXX · 2 holders which blocks → FRACTEL, LLC 965H RANDOLPH IA
2019-12-02 712-512 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → HD CARRIER LLC 321J MINEOLA IA
2019-12-02 712-513 0XXX1XXX2XXX3XXX5XXX8XXX9XXX · 5 holders which blocks → HD CARRIER LLC 321J CARROLL IA
2019-11-26 712-514 7XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 SPENCER IA
2019-11-21 712-569 0–9 XXXall 10 · 2 holders which blocks → TELNYX LLC 073H SIOUX CITY IA
2019-11-19 712-613 0–9 XXXall 10 · 2 holders which blocks → WIDE VOICE, LLC - IA 722G SIOUX CITY IA
2019-11-05 712-576 0XXX2XXX3XXX7XXX · 2 holders which blocks → ONVOY, LLC - IA 221F TABOR IA
2019-10-28 712-317 0–9 XXXall 10 · 4 holders which blocks → AIRUS, INC - IA 423H SIOUX CITY IA
2019-10-22 712-543 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → AIRUS, INC - IA 423H UNDERWOOD IA
2019-09-25 712-927 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SIOUX CITY IA
2019-09-18 712-591 0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → QWEST CORPORATION 9631 HAMBURG IA
2019-08-29 712-217 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IA 221F CARTERLAKE 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.