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
2013-06-14 734-833-7XXX 7000–7999Assigned METROPCS, INC. 5562 DUNDEE MI
2013-05-24 734-221-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J YPSILANTI MI
2013-05-15 734-249-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ANN ARBOR MI
2013-05-15 734-957-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 BELLEVILLE MI
2013-04-19 734-838-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E LIVONIA MI
2013-04-05 734-545-7XXX 7000–7999Assigned 123.NET, LLC 2550 ANN ARBOR MI
2013-04-05 734-639-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MONROE MI
2013-04-04 734-431-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WAYNE MI
2013-03-28 734-431-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WAYNE MI
2013-03-27 734-744-8XXX 8000–8999Assigned BHN IP ENABLED SERVICES, LLC 045L LIVONIA MI
2013-03-20 734-391-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 BELLEVILLE MI
2013-03-04 734-215-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E MILAN MI
2013-02-22 734-333-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C WHITMORELK MI
2013-02-22 734-375-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C GREGORY MI
2013-02-22 734-605-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C MAYBEE MI
2013-02-22 734-849-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C LOSTPNNSUL MI
2013-02-22 734-858-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C WAYNE MI
2013-02-22 734-863-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C ERIE MI
2013-02-13 734-234-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C TEMPERANCE MI
2013-02-13 734-470-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C SALINE MI
2013-02-13 734-568-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C LAMBERTVL MI
2013-02-13 734-655-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C LIVONIA MI
2013-02-13 734-833-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C DUNDEE MI
2013-02-12 734-256-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WILLIS MI
2013-02-12 734-270-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WILLIS MI
2013-02-12 734-270-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WILLIS MI
2013-02-12 734-270-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WILLIS MI
2013-02-12 734-270-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WILLIS MI
2013-02-12 734-404-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PLYMOUTH MI
2013-02-12 734-456-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PLYMOUTH MI
2013-02-12 734-456-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PLYMOUTH MI
2013-02-12 734-554-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WILLIS MI
2013-02-12 734-567-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WILLIS MI
2013-02-12 734-567-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WILLIS MI
2013-02-12 734-567-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WILLIS MI
2013-02-12 734-567-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WILLIS MI
2013-02-12 734-567-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WILLIS MI
2013-02-12 734-567-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WILLIS MI
2013-02-12 734-610-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WILLIS MI
2013-02-12 734-610-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WILLIS MI
2013-02-12 734-610-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WILLIS MI
2013-02-12 734-610-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WILLIS MI
2013-02-12 734-610-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WILLIS MI
2013-02-12 734-610-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WILLIS MI
2013-02-12 734-610-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WILLIS MI
2013-02-12 734-610-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WILLIS MI
2013-02-12 734-667-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PLYMOUTH MI
2013-02-12 734-781-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PLYMOUTH MI
2013-02-12 734-781-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PLYMOUTH MI
2013-02-12 734-781-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PLYMOUTH 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.