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
2019-08-26 531-238-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E RANDOLPH NE
2019-08-26 531-238-6XXX 6000–6999Assigned ONVOY, LLC - NE 549E RANDOLPH NE
2019-08-26 531-414-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADISON NE
2019-08-20 531-214-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E PILGER NE
2019-08-20 531-214-3XXX 3000–3999Assigned ONVOY, LLC - NE 549E PILGER NE
2019-08-20 531-216-1XXX 1000–1999Assigned ONVOY, LLC - NE 549E SCHUYLER NE
2019-08-20 531-216-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E SCHUYLER NE
2019-08-20 531-221-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E SO YANKTON NE
2019-08-20 531-229-0XXX 0000–0999Assigned ONVOY, LLC - NE 549E LINCOLN NE
2019-08-20 531-229-1XXX 1000–1999Assigned ONVOY, LLC - NE 549E LINCOLN NE
2019-08-20 531-335-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E WEST POINT NE
2019-08-20 531-335-6XXX 6000–6999Assigned ONVOY, LLC - NE 549E WEST POINT NE
2019-08-20 531-519-1XXX 1000–1999Assigned ONVOY, LLC - NE 549E WAYNE NE
2019-08-20 531-571-3XXX 3000–3999Assigned ONVOY, LLC - NE 549E WAKEFIELD NE
2019-08-20 531-571-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E WAKEFIELD NE
2019-08-20 531-625-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 SOSIOUX CY NE
2019-08-19 531-202-3XXX 3000–3999Assigned ONVOY, LLC - NE 549E OAKLAND NE
2019-08-19 531-202-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E OAKLAND NE
2019-08-19 531-204-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E NORFOLK NE
2019-08-19 531-204-3XXX 3000–3999Assigned ONVOY, LLC - NE 549E NORFOLK NE
2019-08-19 531-206-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E AINSWORTH NE
2019-08-19 531-208-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E ATKINSON NE
2019-08-19 531-223-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E HOWELLS NE
2019-08-19 531-223-3XXX 3000–3999Assigned ONVOY, LLC - NE 549E HOWELLS NE
2019-08-19 531-227-1XXX 1000–1999Assigned ONVOY, LLC - NE 549E CLARKSON NE
2019-08-19 531-227-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E CLARKSON NE
2019-08-19 531-300-3XXX 3000–3999Assigned ONVOY, LLC - NE 549E CRESTON NE
2019-08-19 531-300-4XXX 4000–4999Assigned ONVOY, LLC - NE 549E CRESTON NE
2019-08-19 531-888-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E O NEILL NE
2019-08-15 531-224-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NE 995E AUBURN NE
2019-08-06 531-867-2XXX 2000–2999Assigned METROPCS, INC. 5562 OMAHA NE
2019-08-01 531-239-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2019-08-01 531-239-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2019-08-01 531-414-3XXX 3000–3999Assigned ONVOY, LLC - NE 549E MADISON NE
2019-08-01 531-625-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E SOSIOUX CY NE
2019-08-01 531-625-3XXX 3000–3999Assigned ONVOY, LLC - NE 549E SOSIOUX CY NE
2019-07-30 531-530-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 LINCOLN NE
2019-07-30 531-530-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 LINCOLN NE
2019-07-25 531-209-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J BLAIR NE
2019-07-19 531-230-7XXX 7000–7999Assigned ONVOY, LLC - NE 549E COLUMBUS NE
2019-07-19 531-230-8XXX 8000–8999Assigned ONVOY, LLC - NE 549E COLUMBUS NE
2019-06-26 531-625-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SOSIOUX CY NE
2019-06-26 531-625-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SOSIOUX CY NE
2019-06-26 531-625-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SOSIOUX CY NE
2019-06-26 531-625-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SOSIOUX CY NE
2019-06-26 531-625-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SOSIOUX CY NE
2019-06-26 531-625-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SOSIOUX CY NE
2019-06-25 531-239-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 OMAHA NE
2019-06-21 531-239-9XXX 9000–9999Assigned METROPCS, INC. 5562 OMAHA NE
2019-06-21 531-867-5XXX 5000–5999Assigned COMMIO, LLC 939H 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.