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
2016-04-11 515-361-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 ALGONA IA
2016-03-30 515-686-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AMES IA
2016-03-30 515-835-5XXX 5000–5999Assigned UNITED STATES CELLULAR - IA 6266 WEBSTER CY IA
2016-03-23 515-642-1XXX 1000–1999Assigned ONVOY, LLC - IA 221F PERRY IA
2016-03-23 515-642-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F PERRY IA
2016-03-22 515-236-8XXX 8000–8999Assigned UNITED STATES CELLULAR - IA 6266 BOONE IA
2016-03-22 515-750-0XXX 0000–0999Assigned ONVOY, LLC - IA 221F DAWSON IA
2016-03-22 515-750-1XXX 1000–1999Assigned ONVOY, LLC - IA 221F DAWSON IA
2016-03-18 515-721-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2016-03-18 515-721-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2016-03-18 515-721-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2016-03-18 515-721-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2016-03-18 515-805-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2016-03-18 515-805-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2016-03-18 515-882-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F LUVERNE IA
2016-03-18 515-882-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F LUVERNE IA
2016-03-17 515-361-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F ALGONA IA
2016-03-17 515-361-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F ALGONA IA
2016-03-17 515-824-0XXX 0000–0999Assigned ONVOY, LLC - IA 221F RENWICK IA
2016-03-17 515-824-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F RENWICK IA
2016-03-17 515-854-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F WILLIAMS IA
2016-03-17 515-854-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F WILLIAMS IA
2016-03-16 515-373-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F GILMORE CY IA
2016-03-16 515-373-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F GILMORE CY IA
2016-03-16 515-375-0XXX 0000–0999Assigned ONVOY, LLC - IA 221F BRADGATE IA
2016-03-16 515-375-1XXX 1000–1999Assigned ONVOY, LLC - IA 221F BRADGATE IA
2016-03-16 515-599-9XXX 9000–9999Assigned ONVOY, LLC - IA 221F GRANGER IA
2016-03-16 515-602-1XXX 1000–1999Assigned ONVOY, LLC - IA 221F CLARION IA
2016-03-16 515-602-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F CLARION IA
2016-03-16 515-679-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F WESLEY IA
2016-03-16 515-679-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F WESLEY IA
2016-03-16 515-800-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F COLFAX IA
2016-03-16 515-800-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F COLFAX IA
2016-03-16 515-805-9XXX 9000–9999Assigned UNITED STATES CELLULAR - IA 6266 DES MOINES IA
2016-03-16 515-999-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F GRANGER IA
2016-03-15 515-219-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F ADEL IA
2016-03-15 515-219-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F ADEL IA
2016-03-15 515-721-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2016-03-15 515-721-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2016-03-15 515-721-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2016-03-14 515-686-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 AMES IA
2016-03-14 515-805-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2016-03-14 515-805-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2016-03-11 515-686-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F AMES IA
2016-03-11 515-686-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F AMES IA
2016-03-09 515-379-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F LIVERMORE IA
2016-03-09 515-379-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F LIVERMORE IA
2016-03-09 515-420-0XXX 0000–0999Assigned ONVOY, LLC - IA 221F POLK CITY IA
2016-03-09 515-420-1XXX 1000–1999Assigned ONVOY, LLC - IA 221F POLK CITY IA
2016-03-09 515-454-1XXX 1000–1999Assigned ONVOY, LLC - IA 221F STUART 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.