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
2018-02-07 605-305-7XXX 7000–7999Assigned NUSO, LLC 551G SIOUX FLS SD
2018-02-05 605-653-6XXX 6000–6999Assigned AIRUS, INC. - SD 580H YANKTON SD
2018-02-05 605-730-6XXX 6000–6999Assigned AIRUS, INC. - SD 580H CHAMBERLAN SD
2018-02-05 605-945-6XXX 6000–6999Assigned AIRUS, INC. - SD 580H PIERRE SD
2018-02-05 605-960-2XXX 2000–2999Assigned AIRUS, INC. - SD 580H HURON SD
2018-01-30 605-846-3XXX 3000–3999Assigned AERIAL COMMUNICATIONS, INC. 6701 ABERDEEN SD
2018-01-30 605-846-4XXX 4000–4999Assigned AERIAL COMMUNICATIONS, INC. 6701 ABERDEEN SD
2018-01-30 605-846-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 ABERDEEN SD
2018-01-23 605-646-7XXX 7000–7999Assigned AIRUS, INC. - SD 580H RAPID CITY SD
2018-01-11 605-313-0XXX 0000–0999Assigned NORTHERN VALLEY COMMUNICATIONS, LLC 6125 REDFIELD SD
2018-01-11 605-313-1XXX 1000–1999Assigned NORTHERN VALLEY COMMUNICATIONS, LLC 6125 REDFIELD SD
2018-01-11 605-313-2XXX 2000–2999Assigned NORTHERN VALLEY COMMUNICATIONS, LLC 6125 REDFIELD SD
2018-01-11 605-313-3XXX 3000–3999Assigned NORTHERN VALLEY COMMUNICATIONS, LLC 6125 REDFIELD SD
2018-01-11 605-313-4XXX 4000–4999Assigned NORTHERN VALLEY COMMUNICATIONS, LLC 6125 REDFIELD SD
2018-01-11 605-313-5XXX 5000–5999Assigned NORTHERN VALLEY COMMUNICATIONS, LLC 6125 REDFIELD SD
2018-01-11 605-313-6XXX 6000–6999Assigned NORTHERN VALLEY COMMUNICATIONS, LLC 6125 REDFIELD SD
2018-01-11 605-313-7XXX 7000–7999Assigned NORTHERN VALLEY COMMUNICATIONS, LLC 6125 REDFIELD SD
2018-01-11 605-313-8XXX 8000–8999Assigned NORTHERN VALLEY COMMUNICATIONS, LLC 6125 REDFIELD SD
2018-01-11 605-313-9XXX 9000–9999Assigned NORTHERN VALLEY COMMUNICATIONS, LLC 6125 REDFIELD SD
2018-01-05 605-295-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PIERRE SD
2017-12-29 605-592-3XXX 3000–3999Assigned MCC TELEPHONY OF THE MID-WEST, LLC - SD 920F BROOKINGS SD
2017-12-22 605-777-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 HARISBGTEA SD
2017-11-27 605-954-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 WATERTOWN SD
2017-11-14 605-970-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARTIN SD
2017-11-14 605-970-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARTIN SD
2017-11-14 605-970-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARTIN SD
2017-11-14 605-970-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARTIN SD
2017-11-13 605-799-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 SIOUX FLS SD
2017-11-13 605-799-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 SIOUX FLS SD
2017-11-09 605-930-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J VOLGA SD
2017-11-03 605-980-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARTIN SD
2017-10-30 605-899-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARTIN SD
2017-10-25 605-891-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOTSPRINGS SD
2017-10-25 605-891-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOTSPRINGS SD
2017-10-09 605-305-3XXX 3000–3999Assigned ONVOY, LLC - SD 162G SIOUX FLS SD
2017-10-09 605-340-1XXX 1000–1999Assigned ONVOY, LLC - SD 162G SPEARFISH SD
2017-10-09 605-408-5XXX 5000–5999Assigned ONVOY, LLC - SD 162G HARISBGTEA SD
2017-10-09 605-569-5XXX 5000–5999Assigned ONVOY, LLC - SD 162G BELLEFORCH SD
2017-09-27 605-937-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 SIOUX FLS SD
2017-09-21 605-301-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - SD 106F PIERRE SD
2017-09-21 605-301-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - SD 106F PIERRE SD
2017-08-29 605-592-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BROOKINGS SD
2017-08-15 605-963-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DELLRAPIDS SD
2017-08-02 605-410-5XXX 5000–5999Assigned MIDCONTINENT COMMUNICATIONS. - SD 7076 IPSWICH SD
2017-08-02 605-954-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA SD-LLC 693G WATERTOWN SD
2017-07-28 605-592-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 BROOKINGS SD
2017-07-24 605-305-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 SIOUX FLS SD
2017-07-24 605-305-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 SIOUX FLS SD
2017-07-05 605-872-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 RAPID CITY SD
2017-06-12 605-949-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 MILBANK 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.