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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2021-06-08 605-860-5XXX 5000–5999Assigned ONVOY, LLC - SD 162G DE SMET SD
2021-06-08 605-952-4XXX 4000–4999Assigned ONVOY, LLC - SD 162G ELK POINT SD
2021-06-08 605-979-1XXX 1000–1999Assigned ONVOY, LLC - SD 162G NOSIOUX CY SD
2021-06-08 605-981-4XXX 4000–4999Assigned ONVOY, LLC - SD 162G RAPID CITY SD
2021-06-08 605-981-5XXX 5000–5999Assigned ONVOY, LLC - SD 162G RAPID CITY SD
2021-06-08 605-989-4XXX 4000–4999Assigned ONVOY, LLC - SD 162G NOVALENTIN SD
2021-06-08 605-991-0XXX 0000–0999Assigned ONVOY, LLC - SD 162G MILBANK SD
2021-06-01 605-315-9XXX 9000–9999Assigned ONVOY, LLC - SD 162G ARLINGTON SD
2021-06-01 605-316-9XXX 9000–9999Assigned ONVOY, LLC - SD 162G IROQUOIS SD
2021-06-01 605-318-0XXX 0000–0999Assigned ONVOY, LLC - SD 162G PIERRE SD
2021-06-01 605-318-6XXX 6000–6999Assigned ONVOY, LLC - SD 162G PIERRE SD
2021-06-01 605-663-2XXX 2000–2999Assigned ONVOY, LLC - SD 162G HURON SD
2021-06-01 605-663-3XXX 3000–3999Assigned ONVOY, LLC - SD 162G HURON SD
2021-05-25 605-606-0XXX 0000–0999Assigned MIDCONTINENT COMMUNICATIONS. - SD 7076 SIOUX FLS SD
2021-05-24 605-981-1XXX 1000–1999Assigned STRATUS NETWORKS 495J RAPID CITY SD
2021-05-20 605-972-1XXX 1000–1999Assigned ONVOY, LLC - SD 162G WESTJASPER SD
2021-05-19 605-705-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - SD 5180 SIOUX FLS SD
2021-05-09 605-340-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SPEARFISH SD
2021-05-09 605-900-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SIOUX FLS SD
2021-05-09 605-900-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SIOUX FLS SD
2021-05-09 605-900-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SIOUX FLS SD
2021-05-05 605-972-2XXX 2000–2999Assigned ONVOY, LLC - SD 162G WESTJASPER SD
2021-05-05 605-972-3XXX 3000–3999Assigned ONVOY, LLC - SD 162G WESTJASPER SD
2021-05-04 605-418-1XXX 1000–1999Assigned METROPCS, INC. 5562 ABERDEEN SD
2021-04-20 605-300-2XXX 2000–2999Assigned METROPCS, INC. 5562 BERESFORD SD
2021-04-18 605-601-2XXX 2000–2999Assigned METROPCS, INC. 5562 SIOUX FLS SD
2021-04-16 605-910-0XXX 0000–0999Assigned ONVOY, LLC - SD 162G SIOUX FLS SD
2021-04-15 605-418-4XXX 4000–4999Assigned AERIAL COMMUNICATIONS, INC. 6701 ABERDEEN SD
2021-04-15 605-418-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 ABERDEEN SD
2021-04-15 605-418-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 ABERDEEN SD
2021-04-15 605-418-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 ABERDEEN SD
2021-04-15 605-418-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 ABERDEEN SD
2021-04-15 605-418-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 ABERDEEN SD
2021-04-14 605-608-7XXX 7000–7999Assigned METROPCS, INC. 5562 RAPID CITY SD
2021-04-14 605-933-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MITCHELL SD
2021-04-14 605-971-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 ABERDEEN SD
2021-04-14 605-971-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 ABERDEEN SD
2021-04-14 605-971-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 ABERDEEN SD
2021-04-09 605-975-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 YANKTON SD
2021-04-05 605-597-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 MITCHELL SD
2021-03-31 605-663-1XXX 1000–1999Assigned AIRUS, INC. - SD 580H HURON SD
2021-03-31 605-991-1XXX 1000–1999Assigned AIRUS, INC. - SD 580H MILBANK SD
2021-03-30 605-315-0XXX 0000–0999Assigned ONVOY, LLC - SD 162G ARLINGTON SD
2021-03-29 605-534-0XXX 0000–0999Assigned AIRUS, INC. - SD 580H FLANDREAU SD
2021-03-24 605-303-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 WATERTOWN SD
2021-03-24 605-740-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SIOUX FLS SD
2021-03-22 605-318-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 PIERRE SD
2021-03-22 605-709-1XXX 1000–1999Assigned STRATUS NETWORKS 495J HARISBGTEA SD
2021-03-17 605-303-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WATERTOWN SD
2021-03-17 605-592-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BROOKINGS 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.