NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

12 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 319
ONVOY, LLC - IA 6
T-MOBILE USA, INC. 2
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 2
BANDWIDTH.COM CLEC, LLC - IA 2
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
2021-03-29 319-723-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F NICHOLS IA
2021-03-29 319-723-9XXX 9000–9999Assigned ONVOY, LLC - IA 221F NICHOLS IA
2021-03-29 319-900-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 CEDAR RPDS IA
2021-03-29 319-938-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F ROWLEY IA
2021-02-28 319-299-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BELLEPLAIN IA
2021-02-28 319-421-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SHELL ROCK IA
2021-02-28 319-635-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FAIRBANK IA
2021-02-28 319-652-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TRAER IA
2021-02-28 319-699-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALLISON IA
2021-02-28 319-877-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WESTBRANCH IA
2021-02-16 319-863-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WASHINGTON IA
2021-02-15 319-205-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F MT VERNON IA
2021-02-15 319-205-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F MT VERNON IA
2021-02-15 319-220-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F CENTRAL CY IA
2021-02-15 319-251-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F ANAMOSA IA
2021-02-15 319-251-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F ANAMOSA IA
2021-02-15 319-281-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F HUDSON IA
2021-02-15 319-281-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F HUDSON IA
2021-02-15 319-289-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F CEDAR RPDS IA
2021-02-15 319-302-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F CENTER PT IA
2021-02-15 319-302-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F CENTER PT IA
2021-02-15 319-304-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F CEDAR RPDS IA
2021-02-15 319-304-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F CEDAR RPDS IA
2021-02-15 319-323-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F OELWEIN IA
2021-02-15 319-323-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F OELWEIN IA
2021-02-15 319-323-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F OELWEIN IA
2021-02-15 319-326-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F INDEPNDNCE IA
2021-02-15 319-326-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F INDEPNDNCE IA
2021-02-15 319-326-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F INDEPNDNCE IA
2021-02-15 319-379-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F IOWA CITY IA
2021-02-15 319-379-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F IOWA CITY IA
2021-02-15 319-379-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F IOWA CITY IA
2021-02-15 319-406-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F DENVER IA
2021-02-15 319-448-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F WALKER IA
2021-02-15 319-455-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F LISBON IA
2021-02-15 319-458-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F WASHINGTON IA
2021-02-15 319-474-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F BRANDON IA
2021-02-15 319-500-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F VINTON IA
2021-02-15 319-500-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F VINTON IA
2021-02-15 319-500-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F VINTON IA
2021-02-15 319-600-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F IOWA CITY IA
2021-02-15 319-629-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F LONE TREE IA
2021-02-15 319-666-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F CEDARFALLS IA
2021-02-15 319-666-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F CEDARFALLS IA
2021-02-15 319-696-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F LOCKRIDGE IA
2021-02-15 319-698-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F W CHESTER IA
2021-02-15 319-723-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F NICHOLS IA
2021-02-15 319-725-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F CONESVILLE IA
2021-02-15 319-726-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F LETTS IA
2021-02-15 319-727-9XXX 9000–9999Assigned ONVOY, LLC - IA 221F COGGON 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.