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
2012-06-19 810-546-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C CROSWELL MI
2012-06-19 810-605-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C FLUSHING MI
2012-06-19 810-643-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C MARINECITY MI
2012-06-19 810-771-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C GRANDBLANC MI
2012-06-13 810-310-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E CAPAC MI
2012-06-13 810-324-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E AVOCA MI
2012-06-13 810-374-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E OTISVILLE MI
2012-06-13 810-535-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E MEMPHIS MI
2012-06-13 810-642-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E SMITHS CRK MI
2012-05-30 810-207-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E HARTLAND MI
2012-05-30 810-292-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E PORT HURON MI
2012-05-30 810-354-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K FENTON MI
2012-05-14 810-626-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BRIGHTON MI
2012-03-29 810-580-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 ALGONAC MI
2012-03-23 810-476-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C APPLEGATE MI
2012-03-20 810-580-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C ALGONAC MI
2012-03-14 810-209-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C BYRON MI
2012-03-09 810-292-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E PORT HURON MI
2012-03-05 810-626-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C BRIGHTON MI
2012-02-29 810-269-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 SANDUSKY MI
2012-02-29 810-627-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 IMLAY CITY MI
2012-02-21 810-292-2XXX 2000–2999Assigned METROPCS, INC. 5562 PORT HURON MI
2012-02-13 810-628-6XXX 6000–6999Assigned 123.NET, LLC 2550 SWARTZ CRK MI
2012-02-10 810-447-4XXX 4000–4999Assigned METROPCS, INC. 5562 FLINT MI
2012-02-10 810-447-5XXX 5000–5999Assigned METROPCS, INC. 5562 FLINT MI
2012-02-10 810-553-2XXX 2000–2999Assigned METROPCS, INC. 5562 FLINT MI
2012-02-02 810-553-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C FLINT MI
2012-01-30 810-447-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E FLINT MI
2012-01-30 810-671-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ALGONAC MI
2012-01-25 810-553-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E FLINT MI
2012-01-17 810-580-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ALGONAC MI
2012-01-05 810-712-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CROSWELL MI
2011-12-22 810-893-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 FLINT MI
2011-12-01 810-462-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E YALE MI
2011-12-01 810-673-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ALMONT MI
2011-11-16 810-740-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C ST CLAIR MI
2011-11-09 810-671-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J ALGONAC MI
2011-10-10 810-391-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J FLINT MI
2011-09-28 810-258-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J RANKIN MI
2011-08-30 810-292-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 PORT HURON MI
2011-08-30 810-292-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 PORT HURON MI
2011-08-30 810-292-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 PORT HURON MI
2011-08-30 810-292-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 PORT HURON MI
2011-08-04 810-746-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 HARTLAND MI
2011-08-03 810-294-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 PORT HURON MI
2011-08-02 810-986-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 BRIGHTON MI
2011-07-26 810-553-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E FLINT MI
2011-07-22 810-458-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LINDEN MI
2011-07-11 810-834-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 LAPEER MI
2011-07-07 810-294-6XXX 6000–6999Assigned FIRST COMMUNICATIONS, LLC 460K PORT HURON 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.