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
2023-07-13 319-402-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F IOWA CITY IA
2023-07-13 319-402-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F IOWA CITY IA
2023-07-13 319-402-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F IOWA CITY IA
2023-07-13 319-402-9XXX 9000–9999Assigned ONVOY, LLC - IA 221F IOWA CITY IA
2023-07-13 319-403-0XXX 0000–0999Assigned ONVOY, LLC - IA 221F CEDAR RPDS IA
2023-07-13 319-403-1XXX 1000–1999Assigned ONVOY, LLC - IA 221F CEDAR RPDS IA
2023-07-13 319-403-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F CEDAR RPDS IA
2023-07-13 319-403-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F CEDAR RPDS IA
2023-07-13 319-403-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F CEDAR RPDS IA
2023-07-13 319-403-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F CEDAR RPDS IA
2023-07-13 319-403-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F CEDAR RPDS IA
2023-07-13 319-403-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F CEDAR RPDS IA
2023-07-13 319-451-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F CEDAR RPDS IA
2023-07-13 319-451-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F CEDAR RPDS IA
2023-07-13 319-452-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 COLUMBSJCT IA
2023-07-11 319-722-4XXX 4000–4999Assigned BOOST SUBSCRIBERCO L.L.C. 490J WILLIAMSBG IA
2023-07-10 319-663-5XXX 5000–5999Assigned BOOST SUBSCRIBERCO L.L.C. 490J BLAIRSTOWN IA
2023-07-10 319-674-7XXX 7000–7999Assigned BOOST SUBSCRIBERCO L.L.C. 490J WELLMAN IA
2023-06-29 319-305-0XXX 0000–0999Assigned ONVOY, LLC - IA 221F MT VERNON IA
2023-06-29 319-410-0XXX 0000–0999Assigned ONVOY, LLC - IA 221F OELWEIN IA
2023-06-29 319-420-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F WATERLOO IA
2023-06-29 319-468-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F INDEPNDNCE IA
2023-06-28 319-421-2XXX 2000–2999Assigned BOOST SUBSCRIBERCO L.L.C. 490J SHELL ROCK IA
2023-06-23 319-381-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 IOWA CITY IA
2023-06-14 319-299-0XXX 0000–0999Assigned AUREON COMMUNICATIONS, LLC 444G BELLEPLAIN IA
2023-06-14 319-416-1XXX 1000–1999Assigned NUSO, LLC 732J VINTON IA
2023-06-06 319-306-8XXX 8000–8999Assigned BOOST SUBSCRIBERCO L.L.C. 490J JESUP IA
2023-06-06 319-307-4XXX 4000–4999Assigned BOOST SUBSCRIBERCO L.L.C. 490J DUNKERTON IA
2023-06-06 319-314-5XXX 5000–5999Assigned BOOST SUBSCRIBERCO L.L.C. 490J READLYN IA
2023-06-02 319-391-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 CEDAR RPDS IA
2023-05-30 319-633-0XXX 0000–0999Assigned AUREON COMMUNICATIONS, LLC 444G LONE TREE IA
2023-05-24 319-300-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 WATERLOO IA
2023-05-24 319-308-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 FT MADISON IA
2023-05-24 319-340-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 WATERLOO IA
2023-05-24 319-391-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 CEDAR RPDS IA
2023-05-24 319-391-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 CEDAR RPDS IA
2023-05-24 319-391-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 CEDAR RPDS IA
2023-05-24 319-391-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 CEDAR RPDS IA
2023-05-24 319-422-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IA 6266 PARKERSBG IA
2023-05-16 319-340-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WATERLOO IA
2023-05-15 319-445-7XXX 7000–7999Assigned BOOST SUBSCRIBERCO L.L.C. 490J REINBECK IA
2023-05-15 319-652-6XXX 6000–6999Assigned BOOST SUBSCRIBERCO L.L.C. 490J TRAER IA
2023-04-18 319-340-5XXX 5000–5999Assigned BOOST SUBSCRIBERCO L.L.C. 490J WATERLOO IA
2023-04-18 319-381-5XXX 5000–5999Assigned BOOST SUBSCRIBERCO L.L.C. 490J IOWA CITY IA
2023-04-12 319-340-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F WATERLOO IA
2023-04-11 319-413-1XXX 1000–1999Assigned ONVOY, LLC - IA 221F TROY MILLS IA
2023-04-10 319-402-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J IOWA CITY IA
2023-04-10 319-403-9XXX 9000–9999Assigned BOOST SUBSCRIBERCO L.L.C. 490J CEDAR RPDS IA
2023-04-04 319-401-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IA 8344 TRIPOLI IA
2023-04-04 319-910-0XXX 0000–0999Assigned COMMIO, LLC 939H PARKERSBG 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.