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
2021-04-13 531-810-0XXX 0000–0999Assigned ONVOY, LLC - NE 549E LINCOLN NE
2021-04-13 531-910-0XXX 0000–0999Assigned ONVOY, LLC - NE 549E OMAHA NE
2021-04-12 531-262-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2021-04-12 531-262-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2021-04-12 531-272-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 OMAHA NE
2021-03-30 531-255-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J OMAHA NE
2021-03-25 531-245-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E HARVARD NE
2021-03-25 531-246-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E SUPERIOR NE
2021-03-25 531-251-3XXX 3000–3999Assigned ONVOY, LLC - NE 549E DAWSON NE
2021-03-25 531-260-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E NEHAWKA NE
2021-03-25 531-261-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E WEEPINGWTR NE
2021-03-25 531-321-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E ADAMS NE
2021-03-25 531-331-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E MARTELL NE
2021-03-25 531-459-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E UTICA NE
2021-03-25 531-535-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E KENESAW NE
2021-03-24 531-202-4XXX 4000–4999Assigned ONVOY, LLC - NE 549E OAKLAND NE
2021-03-24 531-204-6XXX 6000–6999Assigned ONVOY, LLC - NE 549E NORFOLK NE
2021-03-24 531-204-7XXX 7000–7999Assigned ONVOY, LLC - NE 549E NORFOLK NE
2021-03-24 531-204-8XXX 8000–8999Assigned ONVOY, LLC - NE 549E NORFOLK NE
2021-03-24 531-214-9XXX 9000–9999Assigned ONVOY, LLC - NE 549E PILGER NE
2021-03-24 531-219-6XXX 6000–6999Assigned ONVOY, LLC - NE 549E FREMONT NE
2021-03-24 531-219-7XXX 7000–7999Assigned ONVOY, LLC - NE 549E FREMONT NE
2021-03-24 531-219-8XXX 8000–8999Assigned ONVOY, LLC - NE 549E FREMONT NE
2021-03-24 531-227-4XXX 4000–4999Assigned ONVOY, LLC - NE 549E CLARKSON NE
2021-03-24 531-235-4XXX 4000–4999Assigned ONVOY, LLC - NE 549E EMERSON NE
2021-03-24 531-236-3XXX 3000–3999Assigned ONVOY, LLC - NE 549E HUMPHREY NE
2021-03-24 531-237-4XXX 4000–4999Assigned ONVOY, LLC - NE 549E PENDER NE
2021-03-24 531-238-9XXX 9000–9999Assigned ONVOY, LLC - NE 549E RANDOLPH NE
2021-03-24 531-252-3XXX 3000–3999Assigned ONVOY, LLC - NE 549E CRESTON NE
2021-03-24 531-257-6XXX 6000–6999Assigned ONVOY, LLC - NE 549E VALENTINE NE
2021-03-24 531-335-4XXX 4000–4999Assigned ONVOY, LLC - NE 549E WEST POINT NE
2021-03-24 531-519-9XXX 9000–9999Assigned ONVOY, LLC - NE 549E WAYNE NE
2021-03-24 531-888-3XXX 3000–3999Assigned ONVOY, LLC - NE 549E O NEILL NE
2021-03-23 531-230-1XXX 1000–1999Assigned ALLO COMMUNICATIONS LLC 907K COLUMBUS NE
2021-03-12 531-260-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEHAWKA NE
2021-03-12 531-261-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WEEPINGWTR NE
2021-03-12 531-272-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 OMAHA NE
2021-03-11 531-272-6XXX 6000–6999Assigned AIRUS, INC. - NE 478H OMAHA NE
2021-03-10 531-253-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OTOE NE
2021-03-10 531-257-5XXX 5000–5999Assigned ALLO COMMUNICATIONS LLC 907K VALENTINE NE
2021-03-10 531-258-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SO GREGORY NE
2021-03-10 531-321-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ADAMS NE
2021-03-10 531-400-4XXX 4000–4999Assigned ONVOY, LLC - NE 549E COLUMBUS NE
2021-03-10 531-400-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E COLUMBUS NE
2021-03-10 531-400-6XXX 6000–6999Assigned ONVOY, LLC - NE 549E COLUMBUS NE
2021-03-08 531-254-5XXX 5000–5999Assigned ALLO COMMUNICATIONS LLC 907K LINCOLN NE
2021-02-18 531-221-6XXX 6000–6999Assigned ONVOY, LLC - NE 549E SO YANKTON NE
2021-02-18 531-221-7XXX 7000–7999Assigned ONVOY, LLC - NE 549E SO YANKTON NE
2021-02-18 531-231-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E CLAYCENTER NE
2021-02-18 531-231-6XXX 6000–6999Assigned ONVOY, LLC - NE 549E CLAYCENTER 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.