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
2016-11-04 810-219-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2016-11-04 810-219-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2016-10-31 810-484-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2016-10-31 810-484-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2016-10-31 810-484-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2016-10-31 810-484-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FLINT MI
2016-10-31 810-498-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDBLANC MI
2016-10-31 810-579-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDBLANC MI
2016-10-26 810-321-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J JEDDO MI
2016-10-26 810-498-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J GRANDBLANC MI
2016-10-21 810-335-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALGONAC MI
2016-10-10 810-432-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PORT HURON MI
2016-09-28 810-484-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J FLINT MI
2016-09-28 810-543-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E MEMPHIS MI
2016-09-21 810-206-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J BRIGHTON MI
2016-09-13 810-272-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E LAPEER MI
2016-08-31 810-748-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ALGONAC MI
2016-08-26 810-479-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PORT HURON MI
2016-08-25 810-484-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 FLINT MI
2016-08-24 810-775-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 BRIGHTON MI
2016-08-11 810-498-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E GRANDBLANC MI
2016-07-29 810-206-6XXX 6000–6999Assigned METROPCS, INC. 5562 BRIGHTON MI
2016-07-27 810-510-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E COLUMBIAVL MI
2016-07-25 810-543-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MEMPHIS MI
2016-07-08 810-660-1XXX 1000–1999Assigned METROPCS, INC. 5562 LAPEER MI
2016-07-05 810-542-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DRYDEN MI
2016-06-28 810-432-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E PORT HURON MI
2016-06-27 810-337-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C FLINT MI
2016-06-27 810-484-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C FLINT MI
2016-06-27 810-628-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C SWARTZ CRK MI
2016-06-23 810-215-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E FENTON MI
2016-06-23 810-226-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E DAVISON MI
2016-06-23 810-337-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E FLINT MI
2016-06-23 810-356-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E LAPEER MI
2016-06-22 810-206-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E BRIGHTON MI
2016-06-09 810-689-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C PORT HURON MI
2016-05-31 810-484-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2016-05-31 810-484-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2016-05-24 810-337-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2016-05-24 810-337-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2016-05-24 810-337-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2016-05-10 810-267-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAPEER MI
2016-05-10 810-267-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAPEER MI
2016-05-10 810-267-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAPEER MI
2016-05-04 810-350-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MONTROSE MI
2016-04-22 810-206-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 BRIGHTON MI
2016-04-22 810-337-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2016-04-22 810-337-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2016-04-22 810-337-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLINT MI
2016-04-22 810-337-5XXX 5000–5999Assigned 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.