NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

3 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 734
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 1
EXIANT COMMUNICATIONS LLC 1
AHOI 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
2010-09-23 734-307-6XXX 6000–6999Assigned METROPCS, INC. 5562 TRENTON MI
2010-09-23 734-307-8XXX 8000–8999Assigned METROPCS, INC. 5562 TRENTON MI
2010-09-23 734-307-9XXX 9000–9999Assigned METROPCS, INC. 5562 TRENTON MI
2010-09-08 734-316-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E SALINE MI
2010-09-08 734-648-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E PINCKNEY MI
2010-09-07 734-328-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 BELLEVILLE MI
2010-08-25 734-430-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C MONROE MI
2010-08-25 734-922-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C ANN ARBOR MI
2010-08-24 734-307-4XXX 4000–4999Assigned METROPCS, INC. 5562 TRENTON MI
2010-08-24 734-307-5XXX 5000–5999Assigned METROPCS, INC. 5562 TRENTON MI
2010-08-24 734-363-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TRENTON MI
2010-08-24 734-741-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANN ARBOR MI
2010-08-12 734-224-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E TEMPERANCE MI
2010-08-12 734-236-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ROCKWOOD MI
2010-08-12 734-328-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E BELLEVILLE MI
2010-08-05 734-827-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2010-08-03 734-585-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANN ARBOR MI
2010-08-03 734-619-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANN ARBOR MI
2010-08-03 734-680-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANN ARBOR MI
2010-07-27 734-335-5XXX 5000–5999Assigned FIRST COMMUNICATIONS, LLC 460K PLYMOUTH MI
2010-07-16 734-315-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E NEW BOSTON MI
2010-07-16 734-413-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ROMULUS MI
2010-07-14 734-531-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ANN ARBOR MI
2010-07-14 734-531-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ANN ARBOR MI
2010-07-14 734-531-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ANN ARBOR MI
2010-07-07 734-229-8XXX 8000–8999Assigned FIRST COMMUNICATIONS, LLC 460K ROMULUS MI
2010-07-06 734-548-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2010-06-11 734-316-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E SALINE MI
2010-06-03 734-325-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 BELLEVILLE MI
2010-06-01 734-219-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E YPSILANTI MI
2010-06-01 734-230-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E MONROE MI
2010-06-01 734-237-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E LIVONIA MI
2010-06-01 734-237-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E LIVONIA MI
2010-06-01 734-288-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E WYANDOTTE MI
2010-06-01 734-307-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E TRENTON MI
2010-06-01 734-335-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E PLYMOUTH MI
2010-06-01 734-418-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ANN ARBOR MI
2010-06-01 734-419-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E WAYNE MI
2010-06-01 734-648-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E PINCKNEY MI
2010-05-28 734-219-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 YPSILANTI MI
2010-05-28 734-219-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 YPSILANTI MI
2010-05-28 734-530-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WYANDOTTE MI
2010-05-28 734-530-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WYANDOTTE MI
2010-05-28 734-789-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLAT ROCK MI
2010-05-28 734-925-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FLAT ROCK MI
2010-05-27 734-858-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WAYNE MI
2010-05-27 734-858-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WAYNE MI
2010-05-26 734-252-7XXX 7000–7999Assigned FIRST COMMUNICATIONS, LLC 460K BELLEVILLE MI
2010-05-06 734-386-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLYMOUTH MI
2010-05-03 734-325-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 BELLEVILLE 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.