NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

5 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 605
NEW CINGULAR WIRELESS PCS, LLC - IL 3
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 1
AHOI LLC 1
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 thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2013-11-19 605-968-7XXX 7000–7999Assigned ONVOY, LLC - SD 162G HURON SD
2013-11-19 605-968-8XXX 8000–8999Assigned ONVOY, LLC - SD 162G HURON SD
2013-11-19 605-983-7XXX 7000–7999Assigned ONVOY, LLC - SD 162G ARLINGTON SD
2013-11-15 605-204-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - SD 106F MILLER SD
2013-11-15 605-591-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - SD 5180 SPEARFISH SD
2013-11-01 605-789-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - SD 5180 SIOUX FLS SD
2013-09-20 605-519-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 RAPID CITY SD
2013-09-20 605-519-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 RAPID CITY SD
2013-09-03 605-857-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - SD 5180 YANKTON SD
2013-08-21 605-924-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 MILBANK SD
2013-08-20 605-499-7XXX 7000–7999Assigned ONVOY, LLC - SD 162G STURGIS SD
2013-08-20 605-789-7XXX 7000–7999Assigned ONVOY, LLC - SD 162G SIOUX FLS SD
2013-08-20 605-836-9XXX 9000–9999Assigned ONVOY, LLC - SD 162G CANTON SD
2013-08-20 605-888-5XXX 5000–5999Assigned ONVOY, LLC - SD 162G CHAMBERLAN SD
2013-08-20 605-956-9XXX 9000–9999Assigned ONVOY, LLC - SD 162G WATERTOWN SD
2013-08-15 605-956-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - SD 106F WATERTOWN SD
2013-06-06 605-956-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - SD 5180 WATERTOWN SD
2013-05-15 605-936-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 HURON SD
2013-05-15 605-936-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 HURON SD
2013-04-30 605-809-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 SIOUX FLS SD
2013-04-30 605-809-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 SIOUX FLS SD
2013-04-30 605-809-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 SIOUX FLS SD
2013-04-23 605-204-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MILLER SD
2013-04-22 605-646-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - SD 5180 RAPID CITY SD
2013-04-22 605-988-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - SD 5180 SIOUX FLS SD
2013-04-08 605-679-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - SD 106F SIOUX FLS SD
2013-04-08 605-679-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - SD 106F SIOUX FLS SD
2013-03-11 605-681-1XXX 1000–1999Assigned NUSO, LLC 551G SIOUX FLS SD
2013-02-01 605-809-2XXX 2000–2999Assigned QWEST CORPORATION 9631 SIOUX FLS SD
2013-01-10 605-519-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 RAPID CITY SD
2013-01-10 605-519-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 RAPID CITY SD
2013-01-10 605-590-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 WEBSTER SD
2012-12-14 605-626-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 ABERDEEN SD
2012-12-06 605-888-8XXX 8000–8999Assigned ONVOY, LLC - SD 162G CHAMBERLAN SD
2012-12-03 605-651-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 BROOKINGS SD
2012-11-29 605-277-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - SD 5180 ABERDEEN SD
2012-11-26 605-888-6XXX 6000–6999Assigned ONVOY, LLC - SD 162G CHAMBERLAN SD
2012-11-26 605-888-7XXX 7000–7999Assigned ONVOY, LLC - SD 162G CHAMBERLAN SD
2012-11-21 605-202-4XXX 4000–4999Assigned ONVOY, LLC - SD 162G VERMILLION SD
2012-11-21 605-203-4XXX 4000–4999Assigned ONVOY, LLC - SD 162G LK PRESTON SD
2012-11-21 605-204-3XXX 3000–3999Assigned ONVOY, LLC - SD 162G MILLER SD
2012-11-21 605-206-5XXX 5000–5999Assigned ONVOY, LLC - SD 162G STURGIS SD
2012-11-21 605-206-6XXX 6000–6999Assigned ONVOY, LLC - SD 162G STURGIS SD
2012-11-21 605-210-7XXX 7000–7999Assigned ONVOY, LLC - SD 162G BELLEFORCH SD
2012-11-21 605-220-5XXX 5000–5999Assigned ONVOY, LLC - SD 162G PIERRE SD
2012-11-21 605-231-8XXX 8000–8999Assigned ONVOY, LLC - SD 162G SIOUX FLS SD
2012-11-21 605-277-2XXX 2000–2999Assigned ONVOY, LLC - SD 162G ABERDEEN SD
2012-11-21 605-299-8XXX 8000–8999Assigned ONVOY, LLC - SD 162G MITCHELL SD
2012-11-21 605-302-6XXX 6000–6999Assigned ONVOY, LLC - SD 162G REDFIELD SD
2012-11-21 605-368-3XXX 3000–3999Assigned ONVOY, LLC - SD 162G HARISBGTEA SD

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.