NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

3 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 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
2018-07-13 734-410-0XXX 0000–0999Assigned METROPCS, INC. 5562 MONROE MI
2018-07-13 734-410-1XXX 1000–1999Assigned METROPCS, INC. 5562 MONROE MI
2018-07-13 734-410-9XXX 9000–9999Assigned METROPCS, INC. 5562 MONROE MI
2018-07-10 734-746-8XXX 8000–8999Assigned METROPCS, INC. 5562 DUNDEE MI
2018-06-20 734-210-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2018-06-20 734-210-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2018-06-19 734-210-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ANN ARBOR MI
2018-06-15 734-206-7XXX 7000–7999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G TEMPERANCE MI
2018-06-05 734-346-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TRENTON MI
2018-06-05 734-346-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TRENTON MI
2018-06-05 734-802-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 YPSILANTI MI
2018-05-10 734-406-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROMULUS MI
2018-05-10 734-406-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROMULUS MI
2018-05-01 734-550-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E WHITMORELK MI
2018-04-11 734-280-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WYANDOTTE MI
2018-04-05 734-279-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K PETERSBURG MI
2018-04-03 734-855-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J LIVONIA MI
2018-03-28 734-210-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANN ARBOR MI
2018-03-28 734-210-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANN ARBOR MI
2018-03-28 734-210-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANN ARBOR MI
2018-03-28 734-881-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANN ARBOR MI
2018-03-19 734-928-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E PLYMOUTH MI
2018-03-15 734-322-7XXX 7000–7999Assigned METROPCS, INC. 5562 MONROE MI
2018-03-08 734-539-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ANN ARBOR MI
2018-03-08 734-539-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ANN ARBOR MI
2018-03-08 734-539-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ANN ARBOR MI
2018-03-08 734-539-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ANN ARBOR MI
2018-03-08 734-539-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ANN ARBOR MI
2018-03-08 734-539-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ANN ARBOR MI
2018-03-08 734-539-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ANN ARBOR MI
2018-03-08 734-539-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ANN ARBOR MI
2018-03-08 734-539-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ANN ARBOR MI
2018-03-08 734-539-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ANN ARBOR MI
2018-03-07 734-447-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WAYNE MI
2018-03-07 734-899-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WAYNE MI
2018-03-07 734-899-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WAYNE MI
2018-03-07 734-899-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WAYNE MI
2018-03-06 734-210-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ANN ARBOR MI
2018-03-06 734-210-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ANN ARBOR MI
2018-03-01 734-294-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BELLEVILLE MI
2018-03-01 734-447-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WAYNE MI
2018-02-28 734-489-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ANN ARBOR MI
2018-02-28 734-489-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ANN ARBOR MI
2018-02-28 734-623-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ANN ARBOR MI
2018-02-22 734-288-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WYANDOTTE MI
2018-02-21 734-724-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C DEXTER MI
2018-01-19 734-489-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ANN ARBOR MI
2018-01-02 734-621-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MONROE MI
2017-12-27 734-346-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TRENTON MI
2017-12-18 734-802-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C YPSILANTI 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.