NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

12 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 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
2026-09-17 319-510-0XXX 0000–0999Assigned ONVOY, LLC - IA 221F BURLINGTON IA
2026-09-17 319-510-1XXX 1000–1999Assigned ONVOY, LLC - IA 221F BURLINGTON IA
2026-09-11 319-299-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 BELLEPLAIN IA
2026-09-10 319-468-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 INDEPNDNCE IA
2026-09-10 319-709-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 WINTHROP IA
2026-09-03 319-427-9XXX 9000–9999Assigned ONVOY, LLC - IA 221F WATERLOO IA
2026-09-03 319-490-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F CEDARFALLS IA
2026-09-02 319-492-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E IOWA CITY IA
2026-09-02 319-587-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E CEDAR RPDS IA
2026-08-25 319-492-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F IOWA CITY IA
2026-08-25 319-492-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F IOWA CITY IA
2026-08-21 319-405-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 ANAMOSA IA
2026-08-19 319-804-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F CEDAR RPDS IA
2026-08-11 319-510-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F BURLINGTON IA
2026-08-06 319-502-9XXX 9000–9999Assigned ONVOY, LLC - IA 221F WATERLOO IA
2026-07-30 319-316-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F FT MADISON IA
2026-07-30 319-804-1XXX 1000–1999Assigned ONVOY, LLC - IA 221F CEDAR RPDS IA
2026-07-28 319-340-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F WATERLOO IA
2026-07-21 319-490-9XXX 9000–9999Assigned ONVOY, LLC - IA 221F CEDARFALLS IA
2026-07-09 319-587-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E CEDAR RPDS IA
2026-06-30 319-510-9XXX 9000–9999Assigned ONVOY, LLC - IA 221F BURLINGTON IA
2026-06-24 319-426-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FAIRBANK IA
2026-05-27 319-503-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 CEDAR RPDS IA
2026-05-27 319-503-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 CEDAR RPDS IA
2026-05-12 319-505-1XXX 1000–1999Assigned TERRA NOVA TELECOM INC. 145J WATERLOO IA
2026-05-12 319-591-6XXX 6000–6999Assigned TERRA NOVA TELECOM INC. 145J WASHINGTON IA
2026-05-07 319-452-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 COLUMBSJCT IA
2026-05-07 319-502-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E WATERLOO IA
2026-05-07 319-867-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E IOWA CITY IA
2026-05-06 319-490-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F CEDARFALLS IA
2026-04-22 319-388-7XXX 7000–7999Assigned AUREON COMMUNICATIONS, LLC 444G DONNELLSON IA
2026-04-22 319-881-5XXX 5000–5999Assigned AUREON COMMUNICATIONS, LLC 444G WAPELLO IA
2026-04-09 319-699-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - IA 9877 ALLISON IA
2026-04-06 319-424-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E CEDAR RPDS IA
2026-04-06 319-424-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - IA 985E CEDAR RPDS IA
2026-04-02 319-424-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CEDAR RPDS IA
2026-04-02 319-503-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CEDAR RPDS IA
2026-04-02 319-701-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CEDAR RPDS IA
2026-04-01 319-503-3XXX 3000–3999Assigned BOOST SUBSCRIBERCO L.L.C. 490J CEDAR RPDS IA
2026-03-19 319-424-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CEDAR RPDS IA
2026-03-19 319-424-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CEDAR RPDS IA
2026-03-19 319-424-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CEDAR RPDS IA
2026-03-19 319-492-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 IOWA CITY IA
2026-03-19 319-587-8XXX 8000–8999Assigned EXIANT COMMUNICATIONS LLC 114J CEDAR RPDS IA
2026-03-19 319-867-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 IOWA CITY IA
2026-03-04 319-237-2XXX 2000–2999Assigned TERRA NOVA TELECOM INC. 145J BURLINGTON IA
2026-03-04 319-300-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WATERLOO IA
2026-03-04 319-502-7XXX 7000–7999Assigned BOOST SUBSCRIBERCO L.L.C. 490J WATERLOO IA
2026-01-12 319-488-4XXX 4000–4999Assigned TERRA NOVA TELECOM INC. 145J KEYSTONE IA
2026-01-12 319-543-0XXX 0000–0999Assigned TERRA NOVA TELECOM INC. 145J SOLON 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.