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
2011-08-30 734-997-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C ANN ARBOR MI
2011-08-29 734-708-7XXX 7000–7999Assigned DEERFIELD FARMERS' TELEPHONE COMPANY - MI 558A MAYBEE MI
2011-08-29 734-744-5XXX 5000–5999Assigned BHN IP ENABLED SERVICES, LLC 045L LIVONIA MI
2011-08-25 734-205-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANN ARBOR MI
2011-08-25 734-205-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANN ARBOR MI
2011-08-25 734-352-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANN ARBOR MI
2011-08-25 734-352-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANN ARBOR MI
2011-08-25 734-352-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANN ARBOR MI
2011-08-25 734-352-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANN ARBOR MI
2011-08-18 734-780-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 ANN ARBOR MI
2011-08-12 734-430-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 MONROE MI
2011-08-11 734-531-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J ANN ARBOR MI
2011-07-22 734-219-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 YPSILANTI MI
2011-07-19 734-747-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANN ARBOR MI
2011-07-11 734-548-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2011-07-11 734-548-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2011-06-30 734-219-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C YPSILANTI MI
2011-06-27 734-743-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C LIVONIA MI
2011-06-24 734-593-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J CHELSEA MI
2011-06-24 734-593-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J CHELSEA MI
2011-06-24 734-593-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J CHELSEA MI
2011-06-24 734-593-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J CHELSEA MI
2011-06-16 734-672-4XXX 4000–4999Assigned METROPCS, INC. 5562 TRENTON MI
2011-06-16 734-672-5XXX 5000–5999Assigned METROPCS, INC. 5562 TRENTON MI
2011-06-09 734-413-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ROMULUS MI
2011-06-09 734-561-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E TRENTON MI
2011-06-03 734-369-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2011-06-03 734-369-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2011-06-03 734-589-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E WAYNE MI
2011-05-31 734-224-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E TEMPERANCE MI
2011-05-31 734-325-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E BELLEVILLE MI
2011-05-31 734-325-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E BELLEVILLE MI
2011-05-31 734-331-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E WAYNE MI
2011-05-31 734-636-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E MONROE MI
2011-05-31 734-666-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E LIVONIA MI
2011-05-31 734-666-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E LIVONIA MI
2011-05-31 734-726-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E DEXTER MI
2011-05-27 734-309-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E WYANDOTTE MI
2011-05-27 734-636-3XXX 3000–3999Assigned METROPCS, INC. 5562 MONROE MI
2011-05-24 734-392-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLYMOUTH MI
2011-05-17 734-394-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WAYNE MI
2011-05-17 734-707-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ANN ARBOR MI
2011-05-17 734-707-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ANN ARBOR MI
2011-05-17 734-890-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WAYNE MI
2011-05-12 734-890-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WAYNE MI
2011-05-03 734-309-4XXX 4000–4999Assigned FIRST COMMUNICATIONS, LLC 460K WYANDOTTE MI
2011-05-03 734-707-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ANN ARBOR MI
2011-05-03 734-707-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ANN ARBOR MI
2011-04-25 734-309-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WYANDOTTE MI
2011-04-22 734-833-3XXX 3000–3999Assigned METROPCS, INC. 5562 DUNDEE 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.