NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

14 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 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
2019-12-11 810-243-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2019-12-05 810-666-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2019-12-05 810-837-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANDUSKY MI
2019-11-22 810-529-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAPEER MI
2019-11-22 810-529-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAPEER MI
2019-11-14 810-350-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MONTROSE MI
2019-11-11 810-363-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PORT HURON MI
2019-09-18 810-963-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2019-09-13 810-363-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PORT HURON MI
2019-09-13 810-363-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PORT HURON MI
2019-09-13 810-363-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PORT HURON MI
2019-09-13 810-363-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PORT HURON MI
2019-09-13 810-363-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PORT HURON MI
2019-09-13 810-525-6XXX 6000–6999Assigned METROPCS, INC. 5562 EMMETT MI
2019-09-13 810-819-5XXX 5000–5999Assigned METROPCS, INC. 5562 BRIGHTON MI
2019-09-11 810-542-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DRYDEN MI
2019-08-15 810-529-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAPEER MI
2019-08-13 810-322-6XXX 6000–6999Assigned METROPCS, INC. 5562 LAPEER MI
2019-08-09 810-237-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2019-08-09 810-428-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDBLANC MI
2019-08-08 810-529-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAPEER MI
2019-08-02 810-242-4XXX 4000–4999Assigned TELNET WORLDWIDE, INC. 817J PORT HURON MI
2019-08-02 810-937-4XXX 4000–4999Assigned TELNET WORLDWIDE, INC. 817J PORT HURON MI
2019-07-30 810-363-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E PORT HURON MI
2019-07-30 810-790-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K IMLAY CITY MI
2019-06-28 810-525-3XXX 3000–3999Assigned METROPCS, INC. 5562 EMMETT MI
2019-06-25 810-963-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2019-06-12 810-529-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAPEER MI
2019-05-20 810-331-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ALMONT MI
2019-04-23 810-271-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LENNON MI
2019-04-17 810-428-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDBLANC MI
2019-04-17 810-888-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C GOODELLS MI
2019-04-04 810-529-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 LAPEER MI
2019-03-27 810-484-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2019-02-27 810-202-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C FLUSHING MI
2019-02-27 810-212-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C METAMORA MI
2019-02-27 810-212-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C METAMORA MI
2019-02-27 810-242-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C PORT HURON MI
2019-02-27 810-242-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C PORT HURON MI
2019-02-27 810-255-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C HADLEY MI
2019-02-27 810-255-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C HADLEY MI
2019-02-27 810-289-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C ST CLAIR MI
2019-02-27 810-289-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C ST CLAIR MI
2019-02-27 810-321-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C JEDDO MI
2019-02-27 810-321-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C JEDDO MI
2019-02-27 810-359-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C LEXINGTON MI
2019-02-27 810-369-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C GOODRICH MI
2019-02-27 810-369-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C GOODRICH MI
2019-02-27 810-374-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C OTISVILLE MI
2019-02-27 810-428-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C GRANDBLANC MI

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.