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
2019-09-06 515-654-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 WEBSTER CY IA
2019-08-29 515-466-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F WHITTEMORE IA
2019-08-28 515-495-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F PRAIRIE CY IA
2019-08-28 515-495-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F PRAIRIE CY IA
2019-08-28 515-498-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F LIVERMORE IA
2019-08-28 515-762-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F RUNNELLS IA
2019-08-28 515-762-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F RUNNELLS IA
2019-08-27 515-316-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F GILMORE CY IA
2019-08-27 515-316-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F GILMORE CY IA
2019-08-27 515-349-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F DALLAS CTR IA
2019-08-23 515-206-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F FORT DODGE IA
2019-08-23 515-375-9XXX 9000–9999Assigned ONVOY, LLC - IA 221F BRADGATE IA
2019-08-23 515-385-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F CLARION IA
2019-08-23 515-420-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F POLK CITY IA
2019-08-23 515-420-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F POLK CITY IA
2019-08-23 515-454-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F STUART IA
2019-08-23 515-474-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F WINTERSET IA
2019-08-23 515-489-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F JEWELL IA
2019-08-23 515-500-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 BOONE IA
2019-08-23 515-516-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F BLAIRSBURG IA
2019-08-23 515-516-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F BLAIRSBURG IA
2019-08-23 515-517-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F EARLHAM IA
2019-08-23 515-517-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F EARLHAM IA
2019-08-23 515-531-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F GRANGER IA
2019-08-23 515-575-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F ALGONA IA
2019-08-23 515-575-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALGONA IA
2019-08-23 515-585-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F VAN METER IA
2019-08-23 515-585-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F VAN METER IA
2019-08-23 515-642-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F PERRY IA
2019-08-23 515-654-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F WEBSTER CY IA
2019-08-23 515-654-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F WEBSTER CY IA
2019-08-23 515-679-9XXX 9000–9999Assigned ONVOY, LLC - IA 221F WESLEY IA
2019-08-23 515-690-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F INDIANOLA IA
2019-08-23 515-690-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F INDIANOLA IA
2019-08-23 515-709-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F BOONE IA
2019-08-23 515-709-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F BOONE IA
2019-08-23 515-800-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F COLFAX IA
2019-08-23 515-815-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F AMES IA
2019-08-23 515-854-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F WILLIAMS IA
2019-08-23 515-902-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F HUMBOLDT IA
2019-08-23 515-949-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F EAGLEGROVE IA
2019-08-23 515-949-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F EAGLEGROVE IA
2019-08-22 515-219-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F ADEL IA
2019-08-22 515-993-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F ADEL IA
2019-08-15 515-902-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HUMBOLDT IA
2019-08-14 515-553-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 DES MOINES IA
2019-08-08 515-461-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 DES MOINES IA
2019-08-08 515-553-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2019-08-08 515-553-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DES MOINES IA
2019-08-06 515-815-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 AMES 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.