NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

18 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 983
BANDWIDTH.COM CLEC, LLC - CO 10
ONVOY, LLC - CO 4
T-MOBILE USA, INC. 1
INTRADO COMMUNICATIONS, LLC 1
BOOST SUBSCRIBERCO L.L.C. 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
2026-05-07 983-223-7XXX 7000–7999Assigned ONVOY, LLC - CO 026D LONGMONT CO
2026-05-07 983-223-8XXX 8000–8999Assigned ONVOY, LLC - CO 026D LONGMONT CO
2026-05-07 983-223-9XXX 9000–9999Assigned ONVOY, LLC - CO 026D LONGMONT CO
2026-05-07 983-227-1XXX 1000–1999Assigned ONVOY, LLC - CO 026D FORTLUPTON CO
2026-05-07 983-228-0XXX 0000–0999Assigned ONVOY, LLC - CO 026D DENVER CO
2026-05-07 983-228-1XXX 1000–1999Assigned ONVOY, LLC - CO 026D DENVER CO
2026-05-06 983-225-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
2026-05-06 983-225-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
2026-05-06 983-225-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
2026-05-06 983-225-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
2026-05-06 983-225-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
2026-05-06 983-225-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
2026-05-06 983-225-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
2026-05-06 983-228-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
2026-05-06 983-228-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
2026-05-06 983-228-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
2026-05-06 983-228-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
2026-05-06 983-228-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
2026-05-06 983-228-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
2026-05-06 983-228-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
2026-05-06 983-228-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
2026-04-27 983-225-0XXX 0000–0999Assigned ONVOY, LLC - CO 026D DENVER CO
2026-04-27 983-225-1XXX 1000–1999Assigned ONVOY, LLC - CO 026D DENVER CO
2026-04-27 983-225-2XXX 2000–2999Assigned ONVOY, LLC - CO 026D DENVER CO
2026-04-27 983-587-4XXX 4000–4999Assigned ONVOY, LLC - CO 026D DENVER CO
2026-04-27 983-587-5XXX 5000–5999Assigned ONVOY, LLC - CO 026D DENVER CO
2026-04-27 983-587-6XXX 6000–6999Assigned ONVOY, LLC - CO 026D DENVER CO
2026-04-27 983-587-7XXX 7000–7999Assigned ONVOY, LLC - CO 026D DENVER CO
2026-04-09 983-224-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2026-04-09 983-224-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2026-04-09 983-224-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2026-04-09 983-224-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2026-04-09 983-587-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2026-04-09 983-587-2XXX 2000–2999Assigned BOOST SUBSCRIBERCO L.L.C. 490J DENVER CO
2026-04-09 983-587-3XXX 3000–3999Assigned BOOST SUBSCRIBERCO L.L.C. 490J DENVER CO
2026-04-09 983-587-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2026-04-08 983-587-0XXX 0000–0999Assigned ONVOY, LLC - CO 026D DENVER CO
2026-03-19 983-587-8XXX 8000–8999Assigned OPENTACT INC. 824J DENVER CO
2026-03-13 983-224-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2026-03-13 983-224-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2026-03-13 983-224-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2026-03-13 983-224-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2026-03-03 983-224-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CO 078F DENVER CO
2026-02-20 983-224-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J DENVER CO
2026-02-12 983-277-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2026-02-12 983-277-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2026-02-12 983-277-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2026-02-04 983-500-0XXX 0000–0999Assigned WIDE VOICE, LLC - CO 557H STRASBURG CO
2026-02-04 983-500-5XXX 5000–5999Assigned WIDE VOICE, LLC - CO 557H STRASBURG CO
2026-01-27 983-223-0XXX 0000–0999Assigned ONVOY, LLC - CO 026D LONGMONT CO

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.