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
2014-09-18 515-808-1XXX 1000–1999Assigned UNITED STATES CELLULAR - IA 6266 INDIANOLA IA
2014-09-17 515-446-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2014-09-17 515-446-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2014-09-17 515-446-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2014-09-15 515-207-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2014-09-15 515-207-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2014-09-15 515-207-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2014-09-15 515-207-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2014-09-12 515-408-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 FORT DODGE IA
2014-09-09 515-297-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E WEBSTER CY IA
2014-09-09 515-519-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E RUNNELLS IA
2014-09-04 515-443-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2014-08-29 515-518-3XXX 3000–3999Assigned QWEST CORPORATION 9631 DES MOINES IA
2014-08-26 515-305-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2014-08-26 515-305-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2014-08-26 515-305-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2014-08-26 515-305-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2014-08-26 515-305-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2014-08-26 515-305-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 DES MOINES IA
2014-08-20 515-414-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DES MOINES IA
2014-08-20 515-598-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AMES IA
2014-08-13 515-890-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 HUMBOLDT IA
2014-08-08 515-414-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2014-08-06 515-518-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2014-08-06 515-599-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E GRANGER IA
2014-07-29 515-443-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2014-07-29 515-512-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2014-07-29 515-512-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2014-07-24 515-357-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 AMES IA
2014-07-24 515-357-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 AMES IA
2014-07-02 515-709-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BOONE IA
2014-06-30 515-414-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2014-06-30 515-631-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 DES MOINES IA
2014-06-24 515-414-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2014-06-24 515-414-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2014-06-17 515-414-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2014-06-16 515-329-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E POLK CITY IA
2014-06-10 515-854-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 WILLIAMS IA
2014-05-29 515-454-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E STUART IA
2014-05-28 515-219-6XXX 6000–6999Assigned QWEST CORPORATION 9631 ADEL IA
2014-05-28 515-420-7XXX 7000–7999Assigned QWEST CORPORATION 9631 POLK CITY IA
2014-05-16 515-207-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2014-05-16 515-207-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E DES MOINES IA
2014-05-12 515-370-6XXX 6000–6999Assigned UNITED STATES CELLULAR - IA 6266 JEFFERSON IA
2014-05-06 515-512-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2014-04-25 515-512-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2014-04-25 515-512-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2014-04-21 515-357-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 AMES IA
2014-04-09 515-414-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2014-04-09 515-414-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 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.