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
2011-06-16 810-627-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 IMLAY CITY MI
2011-06-15 810-712-9XXX 9000–9999Assigned AT&T ENTERPRISES, LLC 516C CROSWELL MI
2011-06-09 810-214-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E DAVISON MI
2011-06-09 810-354-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E FENTON MI
2011-06-09 810-356-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E LAPEER MI
2011-06-09 810-771-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRANDBLANC MI
2011-06-03 810-986-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 BRIGHTON MI
2011-05-31 810-294-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E PORT HURON MI
2011-05-31 810-476-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E APPLEGATE MI
2011-05-31 810-545-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E COLUMBIAVL MI
2011-05-31 810-626-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E BRIGHTON MI
2011-05-20 810-553-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 FLINT MI
2011-05-20 810-553-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 FLINT MI
2011-05-18 810-294-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C PORT HURON MI
2011-05-18 810-378-1XXX 1000–1999Assigned AT&T ENTERPRISES, LLC 516C PECK MI
2011-05-18 810-425-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C PT SANILAC MI
2011-05-18 810-512-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C ALGONAC MI
2011-05-18 810-537-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C SANDUSKY MI
2011-05-18 810-643-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C MARINECITY MI
2011-05-18 810-657-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C CARSONVL MI
2011-05-18 810-672-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C SNOVER MI
2011-05-18 810-674-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C APPLEGATE MI
2011-05-18 810-696-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C LEXINGTON MI
2011-05-12 810-772-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 BRIGHTON MI
2011-05-11 810-986-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRIGHTON MI
2011-05-06 810-962-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C FLINT MI
2011-05-03 810-640-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E CLIMTMORRS MI
2011-05-03 810-955-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2011-04-08 810-391-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2011-04-08 810-391-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2011-04-08 810-391-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2011-04-08 810-391-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2011-04-08 810-391-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2011-04-08 810-391-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2011-04-08 810-391-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2011-04-08 810-515-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2011-04-08 810-835-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2011-04-01 810-207-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E HARTLAND MI
2011-03-31 810-522-3XXX 3000–3999Assigned METROPCS, INC. 5562 BRIGHTON MI
2011-03-24 810-640-6XXX 6000–6999Assigned METROPCS, INC. 5562 CLIMTMORRS MI
2011-03-10 810-643-3XXX 3000–3999Assigned METROPCS, INC. 5562 MARINECITY MI
2011-03-08 810-835-8XXX 8000–8999Assigned METROPCS, INC. 5562 FLINT MI
2011-03-08 810-835-9XXX 9000–9999Assigned METROPCS, INC. 5562 FLINT MI
2011-02-28 810-893-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 FLINT MI
2011-02-11 810-882-9XXX 9000–9999Assigned METROPCS, INC. 5562 LAPEER MI
2011-02-10 810-375-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E DRYDEN MI
2011-02-10 810-772-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 BRIGHTON MI
2011-01-26 810-476-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E APPLEGATE MI
2011-01-19 810-893-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2011-01-19 810-893-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 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.