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
2019-08-14 605-836-8XXX 8000–8999Assigned ONVOY, LLC - SD 162G CANTON SD
2019-08-14 605-861-6XXX 6000–6999Assigned ONVOY, LLC - SD 162G DE SMET SD
2019-08-14 605-865-0XXX 0000–0999Assigned ONVOY, LLC - SD 162G TIMBERLAKE SD
2019-08-14 605-952-5XXX 5000–5999Assigned ONVOY, LLC - SD 162G ELK POINT SD
2019-08-14 605-954-5XXX 5000–5999Assigned ONVOY, LLC - SD 162G WATERTOWN SD
2019-08-13 605-315-2XXX 2000–2999Assigned VALLEY COMMUNICATIONS, INC. D/B/A VALLEY FIBERCOM 363J ARLINGTON SD
2019-08-01 605-800-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - SD 5180 SIOUX FLS SD
2019-06-19 605-705-5XXX 5000–5999Assigned COMMIO, LLC 939H SIOUX FLS SD
2019-06-13 605-800-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - SD 106F SIOUX FLS SD
2019-06-11 605-975-6XXX 6000–6999Assigned ONVOY, LLC - SD 162G YANKTON SD
2019-06-11 605-979-5XXX 5000–5999Assigned ONVOY, LLC - SD 162G NOSIOUX CY SD
2019-06-11 605-979-6XXX 6000–6999Assigned ONVOY, LLC - SD 162G NOSIOUX CY SD
2019-06-10 605-530-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 FLANDREAU SD
2019-06-06 605-600-2XXX 2000–2999Assigned ONVOY, LLC - SD 162G RAPID CITY SD
2019-06-06 605-600-3XXX 3000–3999Assigned ONVOY, LLC - SD 162G RAPID CITY SD
2019-06-06 605-677-2XXX 2000–2999Assigned ONVOY, LLC - SD 162G VERMILLION SD
2019-06-06 605-824-1XXX 1000–1999Assigned ONVOY, LLC - SD 162G ABERDEEN SD
2019-06-06 605-824-7XXX 7000–7999Assigned ONVOY, LLC - SD 162G ABERDEEN SD
2019-05-31 605-900-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 SIOUX FLS SD
2019-05-29 605-403-2XXX 2000–2999Assigned CSC WIRELESS, LLC 425J SIOUX FLS SD
2019-05-22 605-954-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - SD 106F WATERTOWN SD
2019-05-08 605-315-1XXX 1000–1999Assigned AIRUS, INC. - SD 580H ARLINGTON SD
2019-05-08 605-815-1XXX 1000–1999Assigned AIRUS, INC. - SD 580H CHAMBERLAN SD
2019-05-01 605-305-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - SD 106F SIOUX FLS SD
2019-04-29 605-273-8XXX 8000–8999Assigned AIRUS, INC. - SD 580H MCINTOSH SD
2019-04-29 605-460-3XXX 3000–3999Assigned AIRUS, INC. - SD 580H REDFIELD SD
2019-04-29 605-827-0XXX 0000–0999Assigned AIRUS, INC. - SD 580H VOLGA SD
2019-04-29 605-836-2XXX 2000–2999Assigned AIRUS, INC. - SD 580H CANTON SD
2019-04-26 605-566-0XXX 0000–0999Assigned ONVOY, LLC - SD 162G SPEARFISH SD
2019-04-25 605-307-1XXX 1000–1999Assigned AIRUS, INC. - SD 580H HILL CITY SD
2019-04-19 605-270-5XXX 5000–5999Assigned AIRUS, INC. - SD 580H MADISON SD
2019-04-19 605-854-2XXX 2000–2999Assigned AIRUS, INC. - SD 580H DE SMET SD
2019-04-17 605-205-3XXX 3000–3999Assigned AIRUS, INC. - SD 580H ELK POINT SD
2019-04-17 605-432-0XXX 0000–0999Assigned AIRUS, INC. - SD 580H MILBANK SD
2019-04-17 605-546-3XXX 3000–3999Assigned AIRUS, INC. - SD 580H IROQUOIS SD
2019-04-12 605-954-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - SD 106F WATERTOWN SD
2019-04-09 605-600-4XXX 4000–4999Assigned ONVOY, LLC - SD 162G RAPID CITY SD
2019-04-09 605-600-5XXX 5000–5999Assigned ONVOY, LLC - SD 162G RAPID CITY SD
2019-04-09 605-600-6XXX 6000–6999Assigned ONVOY, LLC - SD 162G RAPID CITY SD
2019-04-09 605-600-7XXX 7000–7999Assigned ONVOY, LLC - SD 162G RAPID CITY SD
2019-04-09 605-600-8XXX 8000–8999Assigned ONVOY, LLC - SD 162G RAPID CITY SD
2019-03-27 605-799-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - SD 5180 SIOUX FLS SD
2019-03-12 605-777-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 HARISBGTEA SD
2019-02-19 605-646-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 RAPID CITY SD
2019-02-13 605-740-8XXX 8000–8999Assigned MIDCONTINENT COMMUNICATIONS. - SD 7076 SIOUX FLS SD
2019-02-13 605-740-9XXX 9000–9999Assigned MIDCONTINENT COMMUNICATIONS. - SD 7076 SIOUX FLS SD
2019-01-28 605-600-0XXX 0000–0999Assigned FRACTEL, LLC 965H RAPID CITY SD
2019-01-28 605-667-8XXX 8000–8999Assigned FRACTEL, LLC 965H HARISBGTEA SD
2019-01-25 605-900-0XXX 0000–0999Assigned FRACTEL, LLC 965H SIOUX FLS SD
2018-12-18 605-423-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 STURGIS 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.