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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2011-04-08 734-707-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2011-04-08 734-707-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2011-03-31 734-726-2XXX 2000–2999Assigned METROPCS, INC. 5562 DEXTER MI
2011-03-28 734-279-6XXX 6000–6999Assigned TC3 TELECOM, INC. - MI 3459 PETERSBURG MI
2011-03-23 734-309-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WYANDOTTE MI
2011-03-16 734-316-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E SALINE MI
2011-03-09 734-707-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ANN ARBOR MI
2011-03-04 734-795-5XXX 5000–5999Assigned METROPCS, INC. 5562 FLAT ROCK MI
2011-03-03 734-707-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2011-03-03 734-855-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 LIVONIA MI
2011-02-23 734-636-6XXX 6000–6999Assigned METROPCS, INC. 5562 MONROE MI
2011-02-17 734-219-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E YPSILANTI MI
2011-02-17 734-219-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E YPSILANTI MI
2011-02-17 734-386-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E PLYMOUTH MI
2011-02-17 734-386-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E PLYMOUTH MI
2011-02-11 734-796-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 BELLEVILLE MI
2011-02-11 734-864-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2011-02-10 734-357-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 PLYMOUTH MI
2011-01-21 734-890-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WAYNE MI
2011-01-19 734-890-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WAYNE MI
2011-01-19 734-890-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WAYNE MI
2011-01-07 734-545-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2011-01-07 734-545-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2010-12-28 734-707-2XXX 2000–2999Assigned MICHIGAN BELL TEL CO 9323 ANN ARBOR MI
2010-12-28 734-744-4XXX 4000–4999Assigned BHN IP ENABLED SERVICES, LLC 045L LIVONIA MI
2010-12-23 734-430-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 MONROE MI
2010-12-23 734-430-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 MONROE MI
2010-12-22 734-707-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C ANN ARBOR MI
2010-12-16 734-545-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2010-12-15 734-996-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C ANN ARBOR MI
2010-11-19 734-489-2XXX 2000–2999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANN ARBOR MI
2010-11-19 734-489-3XXX 3000–3999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANN ARBOR MI
2010-11-19 734-489-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANN ARBOR MI
2010-11-19 734-489-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANN ARBOR MI
2010-11-03 734-855-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 LIVONIA MI
2010-10-29 734-548-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ANN ARBOR MI
2010-10-19 734-772-8XXX 8000–8999Assigned METROPCS, INC. 5562 LIVONIA MI
2010-10-18 734-391-3XXX 3000–3999Assigned GRID 4 COMMUNICATIONS, INC. - MI 9714 BELLEVILLE MI
2010-10-18 734-858-9XXX 9000–9999Assigned METROPCS, INC. 5562 WAYNE MI
2010-10-11 734-582-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLYMOUTH MI
2010-10-07 734-868-6XXX 6000–6999Assigned TC3 TELECOM, INC. - MI 3459 IDA MI
2010-10-05 734-219-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E YPSILANTI MI
2010-10-05 734-237-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E LIVONIA MI
2010-10-05 734-258-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E WYANDOTTE MI
2010-10-05 734-335-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E PLYMOUTH MI
2010-10-05 734-365-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E TRENTON MI
2010-10-05 734-430-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E MONROE MI
2010-10-05 734-535-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E FLAT ROCK MI
2010-10-05 734-619-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ANN ARBOR MI
2010-10-05 734-713-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E WAYNE 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.