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 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
2021-06-25 531-519-0XXX 0000–0999Assigned UNITED STATES CELLULAR - NE 6263 WAYNE NE
2021-06-25 531-727-4XXX 4000–4999Assigned UNITED STATES CELLULAR - NE 6263 SEWARD NE
2021-06-23 531-322-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E CERESCO NE
2021-06-23 531-322-3XXX 3000–3999Assigned ONVOY, LLC - NE 549E CERESCO NE
2021-06-22 531-221-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H SO YANKTON NE
2021-06-22 531-235-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H EMERSON NE
2021-06-22 531-252-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H CRESTON NE
2021-06-22 531-265-5XXX 5000–5999Assigned METROPCS, INC. 5562 SOSIOUX CY NE
2021-06-22 531-268-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H ATKINSON NE
2021-06-22 531-400-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H COLUMBUS NE
2021-06-22 531-666-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H FREMONT NE
2021-06-22 531-776-0XXX 0000–0999Assigned TELNYX LLC 073H AINSWORTH NE
2021-06-22 531-776-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H AINSWORTH NE
2021-06-18 531-910-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NE 7144 OMAHA NE
2021-06-18 531-910-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NE 7144 OMAHA NE
2021-06-18 531-910-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NE 7144 OMAHA NE
2021-06-18 531-910-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NE 7144 OMAHA NE
2021-06-18 531-910-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NE 7144 OMAHA NE
2021-06-18 531-910-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NE 7144 OMAHA NE
2021-06-14 531-255-0XXX 0000–0999Assigned STRATUS NETWORKS 495J OMAHA NE
2021-06-10 531-263-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 OMAHA NE
2021-05-28 531-263-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OMAHA NE
2021-05-25 531-269-1XXX 1000–1999Assigned STRATUS NETWORKS 495J NORFOLK NE
2021-05-20 531-263-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NE 7144 OMAHA NE
2021-05-20 531-263-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NE 7144 OMAHA NE
2021-05-20 531-263-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NE 7144 OMAHA NE
2021-05-20 531-263-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NE 7144 OMAHA NE
2021-05-19 531-261-1XXX 1000–1999Assigned ONVOY, LLC - NE 549E WEEPINGWTR NE
2021-05-19 531-776-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E AINSWORTH NE
2021-05-06 531-202-9XXX 9000–9999Assigned TELNYX LLC 073H OAKLAND NE
2021-05-06 531-267-1XXX 1000–1999Assigned IP HORIZON LLC 515J OMAHA NE
2021-05-05 531-263-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 OMAHA NE
2021-05-03 531-268-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 ATKINSON NE
2021-04-30 531-776-6XXX 6000–6999Assigned ONVOY, LLC - NE 549E AINSWORTH NE
2021-04-30 531-776-7XXX 7000–7999Assigned ONVOY, LLC - NE 549E AINSWORTH NE
2021-04-28 531-265-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOSIOUX CY NE
2021-04-27 531-257-1XXX 1000–1999Assigned TELNYX LLC 073H VALENTINE NE
2021-04-27 531-292-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 VALENTINE NE
2021-04-21 531-257-7XXX 7000–7999Assigned ONVOY, LLC - NE 549E VALENTINE NE
2021-04-16 531-275-0XXX 0000–0999Assigned UNITED STATES CELLULAR - NE 6263 HOWELLS NE
2021-04-15 531-224-1XXX 1000–1999Assigned UNITED STATES CELLULAR - NE 6263 AUBURN NE
2021-04-15 531-257-0XXX 0000–0999Assigned UNITED STATES CELLULAR - NE 6263 VALENTINE NE
2021-04-14 531-263-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 OMAHA NE
2021-04-13 531-255-2XXX 2000–2999Assigned AERIAL COMMUNICATIONS, INC. 6701 OMAHA NE
2021-04-13 531-255-3XXX 3000–3999Assigned AERIAL COMMUNICATIONS, INC. 6701 OMAHA NE
2021-04-13 531-255-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 OMAHA NE
2021-04-13 531-255-6XXX 6000–6999Assigned AERIAL COMMUNICATIONS, INC. 6701 OMAHA NE
2021-04-13 531-255-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 OMAHA NE
2021-04-13 531-255-8XXX 8000–8999Assigned AERIAL COMMUNICATIONS, INC. 6701 OMAHA NE
2021-04-13 531-255-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 OMAHA NE

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.