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
2018-08-30 531-571-8XXX 8000–8999Assigned TELNYX LLC 073H WAKEFIELD NE
2018-08-24 531-206-0XXX 0000–0999Assigned UNITED STATES CELLULAR - NE 6263 AINSWORTH NE
2018-08-21 531-202-0XXX 0000–0999Assigned TELNYX LLC 073H OAKLAND NE
2018-08-21 531-208-9XXX 9000–9999Assigned TELNYX LLC 073H ATKINSON NE
2018-08-21 531-214-0XXX 0000–0999Assigned TELNYX LLC 073H PILGER NE
2018-08-21 531-216-0XXX 0000–0999Assigned TELNYX LLC 073H SCHUYLER NE
2018-08-21 531-223-0XXX 0000–0999Assigned TELNYX LLC 073H HOWELLS NE
2018-08-07 531-207-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 LINCOLN NE
2018-08-07 531-207-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 LINCOLN NE
2018-08-07 531-220-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 LINCOLN NE
2018-08-07 531-739-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 LINCOLN NE
2018-07-31 531-727-1XXX 1000–1999Assigned UNITED STATES CELLULAR - NE 6263 SEWARD NE
2018-07-30 531-455-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NE 995E TALMAGE NE
2018-07-23 531-209-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BLAIR NE
2018-07-10 531-519-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WAYNE NE
2018-07-03 531-414-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON NE
2018-06-07 531-557-0XXX 0000–0999Assigned QWEST CORPORATION 9631 OMAHA NE
2018-06-07 531-557-1XXX 1000–1999Assigned QWEST CORPORATION 9631 OMAHA NE
2018-06-07 531-557-2XXX 2000–2999Assigned QWEST CORPORATION 9631 OMAHA NE
2018-06-07 531-557-3XXX 3000–3999Assigned QWEST CORPORATION 9631 OMAHA NE
2018-06-07 531-557-4XXX 4000–4999Assigned QWEST CORPORATION 9631 OMAHA NE
2018-06-07 531-557-5XXX 5000–5999Assigned QWEST CORPORATION 9631 OMAHA NE
2018-06-07 531-557-6XXX 6000–6999Assigned QWEST CORPORATION 9631 OMAHA NE
2018-06-07 531-557-7XXX 7000–7999Assigned QWEST CORPORATION 9631 OMAHA NE
2018-06-07 531-557-8XXX 8000–8999Assigned QWEST CORPORATION 9631 OMAHA NE
2018-06-07 531-557-9XXX 9000–9999Assigned QWEST CORPORATION 9631 OMAHA NE
2018-06-05 531-220-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LINCOLN NE
2018-06-05 531-233-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 OMAHA NE
2018-06-05 531-375-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J OMAHA NE
2018-06-05 531-466-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J OMAHA NE
2018-06-05 531-466-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J OMAHA NE
2018-06-05 531-466-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J OMAHA NE
2018-06-05 531-466-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J OMAHA NE
2018-06-05 531-466-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J OMAHA NE
2018-06-05 531-466-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J OMAHA NE
2018-06-05 531-466-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J OMAHA NE
2018-05-18 531-213-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2018-05-18 531-213-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2018-05-18 531-375-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2018-05-18 531-375-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2018-05-18 531-466-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2018-05-17 531-484-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J OMAHA NE
2018-05-15 531-220-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LINCOLN NE
2018-05-11 531-213-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 OMAHA NE
2018-05-11 531-213-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 OMAHA NE
2018-05-11 531-777-3XXX 3000–3999Assigned AERIAL COMMUNICATIONS, INC. 6701 OMAHA NE
2018-05-11 531-777-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 OMAHA NE
2018-05-11 531-777-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 OMAHA NE
2018-05-10 531-300-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NE 995E CRESTON NE
2018-05-10 531-335-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NE 995E WEST POINT 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.