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
2020-05-21 531-241-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NE 7144 OMAHA NE
2020-05-21 531-241-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NE 7144 OMAHA NE
2020-05-21 531-241-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NE 7144 OMAHA NE
2020-05-21 531-241-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NE 7144 OMAHA NE
2020-05-21 531-241-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NE 7144 OMAHA NE
2020-05-21 531-241-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NE 7144 OMAHA NE
2020-05-21 531-241-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NE 7144 OMAHA NE
2020-05-21 531-241-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NE 7144 OMAHA NE
2020-05-21 531-241-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NE 7144 OMAHA NE
2020-05-21 531-241-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NE 7144 OMAHA NE
2020-05-19 531-206-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AINSWORTH NE
2020-05-19 531-888-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 O NEILL NE
2020-05-18 531-217-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E PLATTSMTH NE
2020-05-18 531-224-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E AUBURN NE
2020-05-14 531-204-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E NORFOLK NE
2020-05-14 531-206-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E AINSWORTH NE
2020-05-14 531-208-3XXX 3000–3999Assigned ONVOY, LLC - NE 549E ATKINSON NE
2020-05-14 531-212-3XXX 3000–3999Assigned ONVOY, LLC - NE 549E OAKLAND NE
2020-05-14 531-214-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E PILGER NE
2020-05-14 531-216-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E SCHUYLER NE
2020-05-14 531-221-1XXX 1000–1999Assigned ONVOY, LLC - NE 549E SO YANKTON NE
2020-05-14 531-223-4XXX 4000–4999Assigned ONVOY, LLC - NE 549E HOWELLS NE
2020-05-14 531-227-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E CLARKSON NE
2020-05-08 531-300-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NE 995E CRESTON NE
2020-04-22 531-229-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LINCOLN NE
2020-04-22 531-229-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LINCOLN NE
2020-04-16 531-727-9XXX 9000–9999Assigned UNITED STATES CELLULAR - NE 6263 SEWARD NE
2020-04-14 531-253-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NE 995E OTOE NE
2020-04-08 531-224-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUBURN NE
2020-04-06 531-253-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E OTOE NE
2020-04-06 531-253-3XXX 3000–3999Assigned ONVOY, LLC - NE 549E OTOE NE
2020-04-06 531-534-3XXX 3000–3999Assigned ONVOY, LLC - NE 549E DEWEESE NE
2020-04-06 531-534-4XXX 4000–4999Assigned ONVOY, LLC - NE 549E DEWEESE NE
2020-04-06 531-551-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E DUNBAR NE
2020-04-06 531-551-6XXX 6000–6999Assigned ONVOY, LLC - NE 549E DUNBAR NE
2020-04-03 531-272-9XXX 9000–9999Assigned METROPCS, INC. 5562 OMAHA NE
2020-04-01 531-209-9XXX 9000–9999Assigned UNITED STATES CELLULAR - NE 6263 BLAIR NE
2020-04-01 531-331-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E MARTELL NE
2020-04-01 531-331-4XXX 4000–4999Assigned ONVOY, LLC - NE 549E MARTELL NE
2020-04-01 531-533-3XXX 3000–3999Assigned ONVOY, LLC - NE 549E GUIDE ROCK NE
2020-04-01 531-533-4XXX 4000–4999Assigned ONVOY, LLC - NE 549E GUIDE ROCK NE
2020-04-01 531-535-4XXX 4000–4999Assigned ONVOY, LLC - NE 549E KENESAW NE
2020-04-01 531-535-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E KENESAW NE
2020-03-24 531-242-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2020-03-24 531-242-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2020-03-24 531-242-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2020-03-24 531-242-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2020-03-23 531-510-0XXX 0000–0999Assigned ALLO COMMUNICATIONS LLC 907K LINCOLN NE
2020-03-23 531-510-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 LINCOLN NE
2020-03-23 531-510-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 LINCOLN 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.