NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

9 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2023-09-12 515-588-1XXX 1000–1999Assigned COMMIO, LLC 939H EAGLEGROVE IA
2023-09-12 515-588-2XXX 2000–2999Assigned COMMIO, LLC 939H EAGLEGROVE IA
2023-09-12 515-588-3XXX 3000–3999Assigned COMMIO, LLC 939H EAGLEGROVE IA
2023-09-12 515-588-6XXX 6000–6999Assigned COMMIO, LLC 939H EAGLEGROVE IA
2023-08-21 515-259-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H DES MOINES IA
2023-08-21 515-567-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 AMES IA
2023-08-21 515-567-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 AMES IA
2023-08-21 515-567-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 AMES IA
2023-08-21 515-940-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H DES MOINES IA
2023-08-21 515-940-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H DES MOINES IA
2023-08-16 515-513-0XXX 0000–0999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2023-08-16 515-513-1XXX 1000–1999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2023-08-14 515-622-0XXX 0000–0999Assigned ONVOY, LLC - IA 221F GILMORE CY IA
2023-08-11 515-304-9XXX 9000–9999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2023-08-11 515-415-9XXX 9000–9999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2023-08-03 515-415-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2023-08-03 515-415-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2023-08-03 515-415-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2023-08-03 515-415-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2023-08-03 515-415-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2023-08-03 515-415-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2023-07-21 515-667-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 GOWRIE IA
2023-07-14 515-384-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 WINTERSET IA
2023-07-14 515-415-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 DES MOINES IA
2023-07-13 515-912-1XXX 1000–1999Assigned ONVOY, LLC - IA 221F INDIANOLA IA
2023-07-13 515-912-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F INDIANOLA IA
2023-07-13 515-912-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F INDIANOLA IA
2023-07-13 515-912-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F INDIANOLA IA
2023-07-13 515-912-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F INDIANOLA IA
2023-07-13 515-934-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F NEVADA IA
2023-07-10 515-815-3XXX 3000–3999Assigned TERRA NOVA TELECOM INC. 145J AMES IA
2023-07-05 515-904-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2023-07-05 515-904-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2023-06-29 515-384-9XXX 9000–9999Assigned ONVOY, LLC - IA 221F WINTERSET IA
2023-06-29 515-522-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F ALGONA IA
2023-06-29 515-526-0XXX 0000–0999Assigned ONVOY, LLC - IA 221F REDFIELD IA
2023-06-27 515-220-1XXX 1000–1999Assigned ONVOY, LLC - IA 221F CAMBRIDGE IA
2023-06-27 515-435-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F ROLAND IA
2023-06-27 515-464-0XXX 0000–0999Assigned ONVOY, LLC - IA 221F MCCALLSBG IA
2023-06-27 515-481-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F PLEASANTVL IA
2023-06-27 515-581-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F ADEL IA
2023-06-27 515-896-0XXX 0000–0999Assigned ONVOY, LLC - IA 221F RIPPEY IA
2023-06-27 515-904-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F DES MOINES IA
2023-06-26 515-308-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F FORT DODGE IA
2023-06-26 515-308-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F FORT DODGE IA
2023-06-14 515-940-1XXX 1000–1999Assigned NUSO, LLC 732J DES MOINES IA
2023-06-08 515-304-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2023-06-08 515-304-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2023-06-08 515-304-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2023-05-15 515-304-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F DES MOINES IA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.