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
2011-05-23 605-789-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - SD 106F SIOUX FLS SD
2011-05-20 605-789-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SIOUX FLS SD
2011-05-17 605-319-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MISSION SD
2011-05-17 605-319-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MISSION SD
2011-05-13 605-787-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RAPID CITY SD
2011-05-13 605-858-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RAPID CITY SD
2011-05-10 605-252-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ABERDEEN SD
2011-05-10 605-899-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARTIN SD
2011-05-10 605-899-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARTIN SD
2011-04-19 605-412-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HURON SD
2011-04-11 605-220-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PIERRE SD
2011-04-08 605-853-8XXX 8000–8999Assigned ONVOY, LLC - SD 162G MILLER SD
2011-03-31 605-574-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HILL CITY SD
2011-03-28 605-231-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - SD 5180 SIOUX FLS SD
2011-03-18 605-699-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - SD 106F BELLEFORCH SD
2011-03-17 605-744-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LENNOX SD
2011-03-10 605-206-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - SD 106F STURGIS SD
2011-03-02 605-731-8XXX 8000–8999Assigned ONVOY, LLC - SD 162G SIOUX FLS SD
2011-02-23 605-755-0XXX 0000–0999Assigned CLARITY TELECOM, LLC DBA BLUEPEAK 4256 RAPID CITY SD
2011-02-23 605-755-1XXX 1000–1999Assigned CLARITY TELECOM, LLC DBA BLUEPEAK 4256 RAPID CITY SD
2011-02-23 605-755-2XXX 2000–2999Assigned CLARITY TELECOM, LLC DBA BLUEPEAK 4256 RAPID CITY SD
2011-02-23 605-755-3XXX 3000–3999Assigned CLARITY TELECOM, LLC DBA BLUEPEAK 4256 RAPID CITY SD
2011-02-23 605-755-4XXX 4000–4999Assigned CLARITY TELECOM, LLC DBA BLUEPEAK 4256 RAPID CITY SD
2011-02-23 605-755-5XXX 5000–5999Assigned CLARITY TELECOM, LLC DBA BLUEPEAK 4256 RAPID CITY SD
2011-02-23 605-755-6XXX 6000–6999Assigned CLARITY TELECOM, LLC DBA BLUEPEAK 4256 RAPID CITY SD
2011-02-23 605-755-7XXX 7000–7999Assigned CLARITY TELECOM, LLC DBA BLUEPEAK 4256 RAPID CITY SD
2011-02-23 605-755-8XXX 8000–8999Assigned CLARITY TELECOM, LLC DBA BLUEPEAK 4256 RAPID CITY SD
2011-02-23 605-755-9XXX 9000–9999Assigned CLARITY TELECOM, LLC DBA BLUEPEAK 4256 RAPID CITY SD
2011-02-22 605-413-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 SIOUX FLS SD
2011-02-22 605-413-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 SIOUX FLS SD
2011-02-22 605-467-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 MILBANK SD
2011-02-22 605-496-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 SIOUX FLS SD
2011-02-22 605-515-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 WALL SD
2011-02-22 605-569-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 BELLEFORCH SD
2011-02-22 605-651-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 BROOKINGS SD
2011-02-15 605-206-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - SD 106F STURGIS SD
2011-02-15 605-569-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - SD 106F BELLEFORCH SD
2011-02-07 605-524-8XXX 8000–8999Assigned ONVOY, LLC - SD 162G MCINTOSH SD
2011-01-31 605-858-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 RAPID CITY SD
2011-01-31 605-858-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 RAPID CITY SD
2011-01-31 605-858-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 RAPID CITY SD
2011-01-31 605-858-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 RAPID CITY SD
2011-01-12 605-215-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 SIOUX FLS SD
2011-01-12 605-215-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 SIOUX FLS SD
2011-01-12 605-215-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 SIOUX FLS SD
2011-01-12 605-215-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 SIOUX FLS SD
2011-01-12 605-215-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 SIOUX FLS SD
2011-01-12 605-290-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 ABERDEEN SD
2011-01-12 605-290-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 ABERDEEN SD
2011-01-12 605-370-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 SIOUX FLS 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.