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
2021-06-18 319-308-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H FT MADISON IA
2021-06-18 319-326-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H INDEPNDNCE IA
2021-06-18 319-380-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H BURLINGTON IA
2021-06-18 319-602-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H HUDSON IA
2021-05-24 319-255-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 COLUMBSJCT IA
2021-05-24 319-255-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 COLUMBSJCT IA
2021-05-19 319-386-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MEDIAPOLIS IA
2021-05-19 319-488-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KEYSTONE IA
2021-05-16 319-253-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F HILLSBORO IA
2021-05-16 319-255-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F COLUMBSJCT IA
2021-05-16 319-881-1XXX 1000–1999Assigned ONVOY, LLC - IA 221F WAPELLO IA
2021-04-26 319-317-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H CEDAR RPDS IA
2021-04-15 319-422-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F PARKERSBG IA
2021-04-15 319-422-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F PARKERSBG IA
2021-04-15 319-422-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F PARKERSBG IA
2021-04-15 319-422-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F PARKERSBG IA
2021-04-14 319-254-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F OLDS IA
2021-04-14 319-257-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F WINFIELD IA
2021-04-12 319-301-1XXX 1000–1999Assigned MCC TELEPHONY LLC 593K SO ENGLISH IA
2021-04-12 319-933-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F JANESVILLE IA
2021-04-09 319-245-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F GRUNDY CTR IA
2021-04-09 319-299-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F BELLEPLAIN IA
2021-04-09 319-445-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F REINBECK IA
2021-04-09 319-543-4XXX 4000–4999Assigned ONVOY, LLC - IA 221F SOLON IA
2021-04-09 319-585-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F HAZLETON IA
2021-04-09 319-628-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F OXFORD IA
2021-04-09 319-635-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F FAIRBANK IA
2021-04-09 319-645-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F TIFFIN IA
2021-04-09 319-652-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F TRAER IA
2021-04-09 319-661-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F WILLIAMSBG IA
2021-04-09 319-662-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F CONROY IA
2021-04-09 319-839-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F MARENGO IA
2021-04-09 319-884-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F APLINGTON IA
2021-04-05 319-738-4XXX 4000–4999Assigned MCC TELEPHONY LLC 593K KESWICK IA
2021-04-01 319-317-1XXX 1000–1999Assigned IP HORIZON LLC 515J CEDAR RPDS IA
2021-03-29 319-302-7XXX 7000–7999Assigned ONVOY, LLC - IA 221F CENTER PT IA
2021-03-29 319-302-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F CENTER PT IA
2021-03-29 319-304-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 CEDAR RPDS IA
2021-03-29 319-323-0XXX 0000–0999Assigned ONVOY, LLC - IA 221F OELWEIN IA
2021-03-29 319-323-1XXX 1000–1999Assigned ONVOY, LLC - IA 221F OELWEIN IA
2021-03-29 319-406-9XXX 9000–9999Assigned ONVOY, LLC - IA 221F DENVER IA
2021-03-29 319-408-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F LISBON IA
2021-03-29 319-408-6XXX 6000–6999Assigned ONVOY, LLC - IA 221F LISBON IA
2021-03-29 319-448-5XXX 5000–5999Assigned ONVOY, LLC - IA 221F WALKER IA
2021-03-29 319-460-8XXX 8000–8999Assigned ONVOY, LLC - IA 221F WASHINGTON IA
2021-03-29 319-460-9XXX 9000–9999Assigned ONVOY, LLC - IA 221F WASHINGTON IA
2021-03-29 319-474-9XXX 9000–9999Assigned ONVOY, LLC - IA 221F BRANDON IA
2021-03-29 319-629-2XXX 2000–2999Assigned ONVOY, LLC - IA 221F LONE TREE IA
2021-03-29 319-629-3XXX 3000–3999Assigned ONVOY, LLC - IA 221F LONE TREE IA
2021-03-29 319-698-0XXX 0000–0999Assigned ONVOY, LLC - IA 221F W CHESTER 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.