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
2005-06-21 734-405-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 WAYNE MI
2005-06-21 734-441-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 ROCKWOOD MI
2005-06-21 734-506-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 CARLETON MI
2005-06-21 734-551-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 NEW BOSTON MI
2005-06-21 734-562-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 CHELSEA MI
2005-06-21 734-562-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 CHELSEA MI
2005-06-21 734-562-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 CHELSEA MI
2005-06-21 734-627-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 CHELSEA MI
2005-06-21 734-818-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 TRENTON MI
2005-06-21 734-828-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 DUNDEE MI
2005-06-20 734-345-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 BELLEVILLE MI
2005-06-20 734-345-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 7279 BELLEVILLE MI
2005-06-20 734-620-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WAYNE MI
2005-06-20 734-620-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WAYNE MI
2005-06-10 734-244-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 MONROE MI
2005-06-09 734-244-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J MONROE MI
2005-06-09 734-348-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J FLAT ROCK MI
2005-05-26 734-934-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WYANDOTTE MI
2005-05-20 734-550-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WHITMORELK MI
2005-05-10 734-828-7XXX 7000–7999Assigned METROPCS, INC. 5562 DUNDEE MI
2005-04-29 734-274-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ANN ARBOR MI
2005-04-29 734-274-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ANN ARBOR MI
2005-04-29 734-274-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ANN ARBOR MI
2005-04-18 734-364-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 MAYBEE MI
2005-04-18 734-399-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 MAYBEE MI
2005-04-13 734-620-4XXX 4000–4999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 WAYNE MI
2005-04-11 734-716-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAYNE MI
2005-04-11 734-716-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAYNE MI
2005-04-11 734-731-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MONROE MI
2005-04-11 734-731-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MONROE MI
2005-04-11 734-895-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAYNE MI
2005-04-07 734-206-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 TEMPERANCE MI
2005-04-07 734-206-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 TEMPERANCE MI
2005-04-07 734-206-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 TEMPERANCE MI
2005-04-07 734-212-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 MANCHESTER MI
2005-04-07 734-215-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 MILAN MI
2005-04-07 734-217-1XXX 1000–1999Assigned ACD TELECOM, INC. - MI 3535 YPSILANTI MI
2005-04-07 734-225-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 WYANDOTTE MI
2005-04-07 734-230-6XXX 6000–6999Assigned ACD TELECOM, INC. - MI 3535 MONROE MI
2005-04-07 734-233-2XXX 2000–2999Assigned ACD TELECOM, INC. - MI 3535 PLYMOUTH MI
2005-04-07 734-236-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 ROCKWOOD MI
2005-04-07 734-237-2XXX 2000–2999Assigned ACD TELECOM, INC. - MI 3535 LIVONIA MI
2005-04-07 734-252-1XXX 1000–1999Assigned ACD TELECOM, INC. - MI 3535 BELLEVILLE MI
2005-04-07 734-256-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 WILLIS MI
2005-04-07 734-269-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 IDA MI
2005-04-07 734-271-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 CARLETON MI
2005-04-07 734-316-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 SALINE MI
2005-04-07 734-317-2XXX 2000–2999Assigned ACD TELECOM, INC. - MI 3535 ERIE MI
2005-04-07 734-375-2XXX 2000–2999Assigned ACD TELECOM, INC. - MI 3535 GREGORY MI
2005-04-07 734-385-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 CHELSEA 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.