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
2011-07-19 515-992-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DALLAS CTR IA
2011-07-18 515-493-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E WINTERSET IA
2011-07-13 515-509-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 AMES IA
2011-07-13 515-777-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2011-07-13 515-777-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2011-07-13 515-777-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2011-06-27 515-493-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E WINTERSET IA
2011-06-27 515-523-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E STUART IA
2011-06-06 515-216-2XXX 2000–2999Assigned QWEST CORPORATION 9631 DES MOINES IA
2011-06-03 515-318-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2011-06-03 515-318-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2011-06-02 515-612-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-06-02 515-612-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-06-02 515-612-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-06-02 515-612-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-06-02 515-612-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-05-31 515-802-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2011-05-31 515-802-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2011-05-27 515-639-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2011-05-24 515-318-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 DES MOINES IA
2011-05-24 515-890-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 HUMBOLDT IA
2011-05-16 515-777-1XXX 1000–1999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2011-05-16 515-777-2XXX 2000–2999Assigned MCC TELEPHONY OF IOWA, LLC - IA 751F DES MOINES IA
2011-05-12 515-599-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E GRANGER IA
2011-05-05 515-216-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2011-05-05 515-259-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2011-05-05 515-442-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E INDIANOLA IA
2011-05-05 515-519-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E RUNNELLS IA
2011-05-05 515-850-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2011-05-05 515-999-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E GRANGER IA
2011-05-02 515-421-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2011-05-02 515-421-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2011-05-02 515-809-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2011-05-02 515-992-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DALLAS CTR IA
2011-04-22 515-200-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ALGONA IA
2011-04-22 515-520-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 AMES IA
2011-04-14 515-203-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E AMES IA
2011-04-08 515-421-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-04-08 515-421-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-30 515-493-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F WINTERSET IA
2011-03-23 515-525-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-23 515-525-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-23 515-525-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-23 515-525-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-23 515-525-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-23 515-525-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-23 515-525-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-23 515-525-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-23 515-525-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-23 515-525-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 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.