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 701
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND 90
NEW CINGULAR WIRELESS PCS, LLC - IL 79
QWEST CORPORATION 71
MIDCONTINENT COMMUNICATIONS - ND 48
ONVOY, LLC - ND 40
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
2019-09-16 701-977 0–9 XXXall 10 · 6 holders which blocks → EXIANT COMMUNICATIONS LLC 114J FARGO ND
2019-08-29 701-779 0–9 XXXall 10 · 3 holders which blocks → HD CARRIER LLC 321J DICKINSON ND
2019-08-12 701-291 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - ND 452F NORTHWOOD ND
2019-08-12 701-501 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - ND 452F CASSELTON ND
2019-08-12 701-987 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - ND 452F THOMPSON ND
2019-06-03 701-717 0–9 XXXwhole prefix which blocks → LTE WIRELESS, INC. - ND 410J CARRINGTON ND
2019-05-29 701-957 0XXX2XXX9XXX · 3 holders which blocks → CSC WIRELESS, LLC 425J BISMARCK ND
2019-04-10 701-760 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND 6568 VALLEYCITY ND
2019-04-09 701-791 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → HD CARRIER LLC 321J BISMARCK ND
2019-03-04 701-507 0–9 XXXwhole prefix which blocks → LTE WIRELESS, INC. - ND 410J ROLETTE ND
2019-02-26 701-877 0–9 XXXall 10 · 5 holders which blocks → TERRA NOVA TELECOM INC. 145J BISMARCK ND
2018-10-30 701-450 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - ND 452F BISMARCK ND
2018-10-30 701-951 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - ND 452F FARGO ND
2018-04-27 701-233 2XXX3XXX · 2 holders which blocks → MIDCONTINENT COMMUNICATIONS - ND 3065 STARKWETHR ND
2018-03-06 701-997 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D FARGO ND
2017-11-17 701-941 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J FARGO ND
2017-10-02 701-666 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - ND 452F MINTO ND
2017-08-14 701-405 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H FARGO ND
2017-07-13 701-975 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H BISMARCK ND
2017-04-19 701-937 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - ND 452F NOMORRISTN ND
2017-03-09 701-561 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J FARGO ND
2017-03-08 701-999 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H BELFIELD ND
2017-03-02 701-401 0–9 XXXwhole prefix which blocks → ONVOY, LLC - ND 452F BISMARCK ND
2017-02-02 701-963 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - ND 999E HATTON ND
2016-12-05 701-498 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H BISMARCK ND
2016-06-14 701-946 0–9 XXXall 10 · 3 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J BISMARCK ND
2016-05-05 701-415 0–9 XXXall 10 · 5 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 BISMARCK ND
2016-03-21 701-807 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - ND 452F LARIMORE ND
2015-10-30 701-514 5XXX which blocks → MIDCONTINENT COMMUNICATIONS - ND 3065 FAIRMOUNT ND
2015-08-06 701-416 5XXX which blocks → MIDCONTINENT COMMUNICATIONS - ND 3065 HANKINSON ND
2015-08-06 701-519 5XXX which blocks → MIDCONTINENT COMMUNICATIONS - ND 3065 LIDGERWOOD ND
2015-07-27 701-901 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → WIDE VOICE, LLC - ND 744G WILLISTON ND
2015-06-05 701-409 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - ND 999E KINDRED ND
2015-04-17 701-969 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - ND 999E HICKSON ND
2014-12-24 701-801 0–9 XXXall 10 · 2 holders which blocks → WIDE VOICE, LLC - ND 744G BISMARCK ND
2014-10-20 701-805 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PEERLESS NETWORK OF NORTH DAKOTA, LLC 460H BISMARCK ND
2014-06-04 701-719 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - ND 452F BELFIELD ND
2014-02-05 701-601 not yet reported which blocks → SAGEBRUSH CELLULAR, INC. 443B FORTUNA ND
2014-01-03 701-404 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - ND 452F FARGO ND
2013-09-13 701-413 not yet reported which blocks → MIDCONTINENT COMMUNICATIONS - ND 3065 SOUTHHEART ND
2013-06-04 701-418 not yet reported which blocks → SRT COMMUNICATIONS, INC. 3303 MINOT ND
2013-03-04 701-955 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 2 holders which blocks → NUSO, LLC 551G BISMARCK ND
2013-01-15 701-236 0XXX which blocks → MIDCONTINENT COMMUNICATIONS - ND 3065 FESSENDEN ND
2013-01-15 701-287 0XXX which blocks → MIDCONTINENT COMMUNICATIONS - ND 3065 DRAKE ND
2012-11-19 701-800 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - ND 452F LEONARD ND
2012-11-19 701-888 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - ND 452F MANVEL ND
2012-10-31 701-715 0–9 XXXall 10 · 3 holders which blocks → NUSO, LLC 478J FARGO ND
2012-09-10 701-935 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - ND 452F EMERADO ND
2012-05-07 701-713 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND 6568 WILLISTON ND
2012-04-18 701-354 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA - ND - LLC 772G BISMARCK ND

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.