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
2017-03-27 531-375-9XXX 9000–9999Assigned METROPCS, INC. 5562 OMAHA NE
2017-03-21 531-215-4XXX 4000–4999Assigned METROPCS, INC. 5562 OMAHA NE
2017-03-21 531-215-7XXX 7000–7999Assigned METROPCS, INC. 5562 OMAHA NE
2017-03-21 531-365-1XXX 1000–1999Assigned METROPCS, INC. 5562 OMAHA NE
2017-03-21 531-777-1XXX 1000–1999Assigned METROPCS, INC. 5562 OMAHA NE
2017-03-20 531-208-2XXX 2000–2999Assigned N.E. COLORADO CELLULAR, INC. 6874 ATKINSON NE
2017-03-20 531-888-2XXX 2000–2999Assigned N.E. COLORADO CELLULAR, INC. 6874 O NEILL NE
2017-03-13 531-215-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2017-03-13 531-215-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2017-03-13 531-215-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2017-03-13 531-365-0XXX 0000–0999Assigned AIRUS, INC. - NE 478H OMAHA NE
2017-03-13 531-444-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2017-03-13 531-444-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2017-03-13 531-444-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2017-03-13 531-444-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2017-03-09 531-888-0XXX 0000–0999Assigned TELNYX LLC 073H O NEILL NE
2017-03-09 531-888-8XXX 8000–8999Assigned TELNYX LLC 073H O NEILL NE
2017-02-28 531-393-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 OMAHA NE
2017-02-28 531-393-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 OMAHA NE
2017-02-28 531-393-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 OMAHA NE
2017-02-28 531-393-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 OMAHA NE
2017-02-28 531-393-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 OMAHA NE
2017-02-28 531-393-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 OMAHA NE
2017-02-28 531-393-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 OMAHA NE
2017-02-28 531-393-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 OMAHA NE
2017-02-28 531-393-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 OMAHA NE
2017-02-28 531-393-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 OMAHA NE
2017-02-16 531-365-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OMAHA NE
2017-02-16 531-365-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OMAHA NE
2017-02-14 531-220-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 LINCOLN NE
2017-02-14 531-739-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 LINCOLN NE
2017-02-14 531-777-7XXX 7000–7999Assigned ONVOY, LLC - NE 549E OMAHA NE
2017-02-13 531-289-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 LINCOLN NE
2017-02-13 531-500-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 LINCOLN NE
2017-02-13 531-500-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 LINCOLN NE
2017-01-25 531-215-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 OMAHA NE
2017-01-18 531-365-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J OMAHA NE
2017-01-18 531-365-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J OMAHA NE
2017-01-06 531-215-1XXX 1000–1999Assigned TELNYX LLC 073H OMAHA NE
2016-12-30 531-220-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 LINCOLN NE
2016-12-14 531-365-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 OMAHA NE
2016-12-06 531-301-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 OMAHA NE
2016-11-21 531-301-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J OMAHA NE
2016-11-09 531-204-0XXX 0000–0999Assigned NUSO, LLC 732J NORFOLK NE
2016-10-17 531-301-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OMAHA NE
2016-10-14 531-301-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2016-10-14 531-301-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2016-09-13 531-224-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 AUBURN NE
2016-09-09 531-210-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 OMAHA NE
2016-09-09 531-210-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 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.