NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

14 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 810
NEW CINGULAR WIRELESS PCS, LLC - IL 13
EXIANT COMMUNICATIONS LLC 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
2014-11-11 810-228-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2014-11-11 810-228-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2014-11-11 810-228-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2014-10-27 810-881-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E PECK MI
2014-10-15 810-775-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C BRIGHTON MI
2014-10-15 810-775-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C BRIGHTON MI
2014-10-10 810-228-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C FLINT MI
2014-10-10 810-671-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C ALGONAC MI
2014-10-07 810-712-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CROSWELL MI
2014-10-01 810-216-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C PORT HURON MI
2014-10-01 810-775-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J BRIGHTON MI
2014-09-30 810-335-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALGONAC MI
2014-09-30 810-660-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAPEER MI
2014-09-30 810-660-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAPEER MI
2014-09-30 810-662-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PORT HURON MI
2014-09-30 810-662-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PORT HURON MI
2014-09-30 810-662-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PORT HURON MI
2014-09-26 810-289-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ST CLAIR MI
2014-09-26 810-289-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ST CLAIR MI
2014-09-23 810-627-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 IMLAY CITY MI
2014-09-18 810-221-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J FLINT MI
2014-09-18 810-580-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ALGONAC MI
2014-09-18 810-674-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C APPLEGATE MI
2014-09-18 810-674-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C APPLEGATE MI
2014-09-16 810-445-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDBLANC MI
2014-09-16 810-445-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDBLANC MI
2014-09-08 810-339-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2014-09-08 810-339-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2014-09-02 810-272-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 LAPEER MI
2014-08-29 810-445-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRANDBLANC MI
2014-08-20 810-279-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E HARTLAND MI
2014-08-20 810-510-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E COLUMBIAVL MI
2014-08-18 810-226-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E DAVISON MI
2014-08-13 810-258-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E RANKIN MI
2014-08-12 810-216-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C PORT HURON MI
2014-08-04 810-221-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C FLINT MI
2014-06-27 810-373-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E FENTON MI
2014-06-25 810-269-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E SANDUSKY MI
2014-06-20 810-844-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 BRIGHTON MI
2014-06-12 810-279-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HARTLAND MI
2014-06-12 810-279-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HARTLAND MI
2014-06-12 810-310-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CAPAC MI
2014-06-12 810-662-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PORT HURON MI
2014-06-10 810-224-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRIGHTON MI
2014-06-10 810-494-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRIGHTON MI
2014-06-10 810-522-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRIGHTON MI
2014-06-02 810-202-1XXX 1000–1999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G FLUSHING MI
2014-06-02 810-321-3XXX 3000–3999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G JEDDO MI
2014-05-27 810-279-1XXX 1000–1999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G HARTLAND MI
2014-05-09 810-221-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E FLINT MI

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.