NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

9 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 515
ONVOY, LLC - IA 5
AUREON COMMUNICATIONS, LLC 2
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 1
BANDWIDTH.COM CLEC, LLC - IA 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
2025-03-21 515-810-6XXX 6000–6999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-810-7XXX 7000–7999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-810-8XXX 8000–8999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-810-9XXX 9000–9999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-818-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-818-1XXX 1000–1999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-818-2XXX 2000–2999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-818-3XXX 3000–3999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-818-4XXX 4000–4999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-818-5XXX 5000–5999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-818-6XXX 6000–6999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-818-7XXX 7000–7999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-818-8XXX 8000–8999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-818-9XXX 9000–9999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-819-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-819-1XXX 1000–1999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-819-2XXX 2000–2999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-819-3XXX 3000–3999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-819-4XXX 4000–4999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-819-5XXX 5000–5999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-819-6XXX 6000–6999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-819-7XXX 7000–7999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-819-8XXX 8000–8999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-819-9XXX 9000–9999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-841-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-841-1XXX 1000–1999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-841-2XXX 2000–2999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-841-3XXX 3000–3999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-841-4XXX 4000–4999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-905-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-905-1XXX 1000–1999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-905-2XXX 2000–2999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-905-3XXX 3000–3999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-905-4XXX 4000–4999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-905-5XXX 5000–5999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-905-6XXX 6000–6999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-905-7XXX 7000–7999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-905-8XXX 8000–8999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-21 515-905-9XXX 9000–9999Assigned UNITED STATES CELLULAR - IA 6266 WINTERSET IA
2025-03-06 515-694-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 AMES IA
2025-03-06 515-694-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 AMES IA
2025-02-27 515-363-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2025-02-27 515-363-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2025-02-27 515-997-1XXX 1000–1999Assigned NUSO, LLC 478J DES MOINES IA
2025-02-17 515-347-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E ADEL IA
2025-01-03 515-701-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 DES MOINES IA
2025-01-03 515-701-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 DES MOINES IA
2025-01-03 515-701-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 DES MOINES IA
2025-01-03 515-701-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 DES MOINES IA
2025-01-03 515-701-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 DES MOINES IA

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.