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
2019-06-17 531-216-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 SCHUYLER NE
2019-06-11 531-232-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OMAHA NE
2019-06-11 531-232-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OMAHA NE
2019-06-11 531-232-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OMAHA NE
2019-06-11 531-232-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OMAHA NE
2019-06-11 531-232-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OMAHA NE
2019-06-11 531-232-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OMAHA NE
2019-06-11 531-232-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OMAHA NE
2019-06-11 531-232-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OMAHA NE
2019-06-11 531-232-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OMAHA NE
2019-06-11 531-232-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OMAHA NE
2019-05-14 531-466-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OMAHA NE
2019-05-14 531-530-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E LINCOLN NE
2019-05-14 531-530-3XXX 3000–3999Assigned ONVOY, LLC - NE 549E LINCOLN NE
2019-05-14 531-800-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OMAHA NE
2019-05-13 531-800-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E OMAHA NE
2019-05-13 531-800-6XXX 6000–6999Assigned ONVOY, LLC - NE 549E OMAHA NE
2019-05-13 531-999-4XXX 4000–4999Assigned ONVOY, LLC - NE 549E OMAHA NE
2019-05-13 531-999-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E OMAHA NE
2019-05-13 531-999-6XXX 6000–6999Assigned ONVOY, LLC - NE 549E OMAHA NE
2019-05-13 531-999-7XXX 7000–7999Assigned ONVOY, LLC - NE 549E OMAHA NE
2019-05-07 531-530-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NE 995E LINCOLN NE
2019-05-02 531-221-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E SO YANKTON NE
2019-04-29 531-233-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2019-04-29 531-389-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2019-04-29 531-800-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2019-04-29 531-800-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2019-04-29 531-800-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2019-04-29 531-800-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 OMAHA NE
2019-04-26 531-300-9XXX 9000–9999Assigned AIRUS, INC. - NE 478H CRESTON NE
2019-04-26 531-571-9XXX 9000–9999Assigned AIRUS, INC. - NE 478H WAKEFIELD NE
2019-04-26 531-888-1XXX 1000–1999Assigned AIRUS, INC. - NE 478H O NEILL NE
2019-04-22 531-223-1XXX 1000–1999Assigned AIRUS, INC. - NE 478H HOWELLS NE
2019-04-11 531-224-0XXX 0000–0999Assigned UNITED STATES CELLULAR - NE 6263 AUBURN NE
2019-04-09 531-206-1XXX 1000–1999Assigned AIRUS, INC. - NE 478H AINSWORTH NE
2019-04-05 531-213-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J OMAHA NE
2019-04-05 531-999-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J OMAHA NE
2019-04-05 531-999-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J OMAHA NE
2019-04-05 531-999-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J OMAHA NE
2019-04-05 531-999-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J OMAHA NE
2019-04-04 531-213-1XXX 1000–1999Assigned AIRUS, INC. - NE 478H OMAHA NE
2019-03-19 531-213-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 OMAHA NE
2019-03-14 531-455-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E TALMAGE NE
2019-03-13 531-213-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OMAHA NE
2019-03-08 531-231-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E CLAYCENTER NE
2019-03-08 531-251-2XXX 2000–2999Assigned ONVOY, LLC - NE 549E DAWSON NE
2019-03-08 531-331-3XXX 3000–3999Assigned ONVOY, LLC - NE 549E MARTELL NE
2019-03-08 531-351-3XXX 3000–3999Assigned ONVOY, LLC - NE 549E TABLE ROCK NE
2019-03-08 531-521-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E DAVEY NE
2019-03-08 531-533-5XXX 5000–5999Assigned ONVOY, LLC - NE 549E GUIDE ROCK 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.