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 531
ONVOY, LLC - NE 3
MIDSTATES DATA TRANSPORT, LLC - NE 2
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 2
INTRADO COMMUNICATIONS, LLC 1
BOOST SUBSCRIBERCO L.L.C. 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
2016-04-06 531-200-8XXX 8000–8999Assigned ONVOY, LLC - NE 549E OMAHA NE
2016-04-01 531-209-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 BLAIR NE
2016-03-29 531-289-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 LINCOLN NE
2016-03-29 531-739-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 LINCOLN NE
2016-03-25 531-300-0XXX 0000–0999Assigned ONVOY, LLC - NE 549E CRESTON NE
2016-03-25 531-300-1XXX 1000–1999Assigned ONVOY, LLC - NE 549E CRESTON NE
2016-03-25 531-571-0XXX 0000–0999Assigned ONVOY, LLC - NE 549E WAKEFIELD NE
2016-03-25 531-571-1XXX 1000–1999Assigned ONVOY, LLC - NE 549E WAKEFIELD NE
2016-03-24 531-200-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J OMAHA NE
2016-03-24 531-200-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J OMAHA NE
2016-03-24 531-208-0XXX 0000–0999Assigned ONVOY, LLC - NE 549E ATKINSON NE
2016-03-24 531-208-1XXX 1000–1999Assigned ONVOY, LLC - NE 549E ATKINSON NE
2016-03-21 531-301-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2016-03-21 531-355-0XXX 0000–0999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OMAHA NE
2016-03-21 531-355-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OMAHA NE
2016-03-21 531-355-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OMAHA NE
2016-03-21 531-355-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OMAHA NE
2016-03-21 531-355-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OMAHA NE
2016-03-21 531-355-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OMAHA NE
2016-03-21 531-355-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OMAHA NE
2016-03-21 531-355-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OMAHA NE
2016-03-21 531-355-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OMAHA NE
2016-03-21 531-355-9XXX 9000–9999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OMAHA NE
2016-03-17 531-200-1XXX 1000–1999Assigned UNITED STATES CELLULAR - NE 6263 OMAHA NE
2016-02-19 531-222-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E OMAHA NE
2016-02-16 531-200-0XXX 0000–0999Assigned ONVOY, LLC - NE 549E OMAHA NE
2016-02-16 531-200-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E OMAHA NE
2016-01-28 531-212-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OAKLAND NE
2016-01-11 531-739-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 LINCOLN NE
2016-01-11 531-739-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 LINCOLN NE
2015-12-09 531-201-0XXX 0000–0999Assigned ONVOY, LLC - NE 549E OMAHA NE
2015-12-09 531-201-1XXX 1000–1999Assigned ONVOY, LLC - NE 549E OMAHA NE
2015-12-09 531-201-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E OMAHA NE
2015-12-09 531-201-3XXX 3000–3999Assigned ONVOY, LLC - NE 549E OMAHA NE
2015-12-09 531-201-4XXX 4000–4999Assigned ONVOY, LLC - NE 549E OMAHA NE
2015-12-09 531-201-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E OMAHA NE
2015-12-09 531-201-6XXX 6000–6999Assigned ONVOY, LLC - NE 549E OMAHA NE
2015-12-09 531-201-7XXX 7000–7999Assigned ONVOY, LLC - NE 549E OMAHA NE
2015-12-09 531-201-8XXX 8000–8999Assigned ONVOY, LLC - NE 549E OMAHA NE
2015-12-09 531-201-9XXX 9000–9999Assigned ONVOY, LLC - NE 549E OMAHA NE
2015-12-02 531-205-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2015-12-02 531-301-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2015-12-02 531-301-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2015-12-02 531-301-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2015-11-24 531-200-7XXX 7000–7999Assigned ONVOY, LLC - NE 549E OMAHA NE
2015-11-24 531-301-8XXX 8000–8999Assigned ONVOY, LLC - NE 549E OMAHA NE
2015-11-24 531-365-9XXX 9000–9999Assigned ONVOY, LLC - NE 549E OMAHA NE
2015-11-17 531-205-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2015-11-17 531-205-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2015-11-17 531-205-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE

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.