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
2018-09-26 810-818-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C MONTROSE MI
2018-09-21 810-819-4XXX 4000–4999Assigned METROPCS, INC. 5562 BRIGHTON MI
2018-09-20 810-242-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 PORT HURON MI
2018-09-20 810-255-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C HADLEY MI
2018-09-20 810-369-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C GOODRICH MI
2018-09-20 810-634-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C NEWLOTHROP MI
2018-09-17 810-272-1XXX 1000–1999Assigned METROPCS, INC. 5562 LAPEER MI
2018-09-17 810-322-7XXX 7000–7999Assigned METROPCS, INC. 5562 LAPEER MI
2018-09-11 810-432-3XXX 3000–3999Assigned METROPCS, INC. 5562 PORT HURON MI
2018-09-11 810-432-4XXX 4000–4999Assigned METROPCS, INC. 5562 PORT HURON MI
2018-09-11 810-432-6XXX 6000–6999Assigned METROPCS, INC. 5562 PORT HURON MI
2018-08-20 810-202-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C FLUSHING MI
2018-08-20 810-370-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C BYRON MI
2018-08-14 810-202-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E FLUSHING MI
2018-08-13 810-242-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PORT HURON MI
2018-08-01 810-666-3XXX 3000–3999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G FLINT MI
2018-07-26 810-322-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 LAPEER MI
2018-07-26 810-322-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 LAPEER MI
2018-06-28 810-310-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E CAPAC MI
2018-06-05 810-819-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRIGHTON MI
2018-06-05 810-819-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRIGHTON MI
2018-06-05 810-852-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRIGHTON MI
2018-05-31 810-202-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C FLUSHING MI
2018-05-09 810-258-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E RANKIN MI
2018-05-03 810-428-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDBLANC MI
2018-05-03 810-428-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDBLANC MI
2018-05-01 810-310-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E CAPAC MI
2018-05-01 810-377-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E LEXINGTON MI
2018-03-09 810-213-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2018-03-09 810-213-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2018-03-09 810-219-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2018-03-09 810-219-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2018-03-09 810-666-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E FLINT MI
2018-03-09 810-666-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E FLINT MI
2018-03-09 810-666-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E FLINT MI
2018-01-26 810-543-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MEMPHIS MI
2018-01-26 810-543-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MEMPHIS MI
2018-01-23 810-322-8XXX 8000–8999Assigned METROPCS, INC. 5562 LAPEER MI
2018-01-09 810-666-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E FLINT MI
2018-01-05 810-322-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 LAPEER MI
2018-01-05 810-819-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C BRIGHTON MI
2017-12-18 810-542-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DRYDEN MI
2017-12-12 810-442-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C DECKERVL MI
2017-12-07 810-432-5XXX 5000–5999Assigned METROPCS, INC. 5562 PORT HURON MI
2017-12-05 810-350-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MONTROSE MI
2017-11-30 810-321-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C JEDDO MI
2017-11-20 810-428-2XXX 2000–2999Assigned TELNET WORLDWIDE, INC. 817J GRANDBLANC MI
2017-10-25 810-206-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 BRIGHTON MI
2017-10-09 810-666-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C FLINT MI
2017-10-03 810-379-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C DAVISON 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.