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
2005-04-07 734-403-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 ROMULUS MI
2005-04-07 734-405-4XXX 4000–4999Assigned ACD TELECOM, INC. - MI 3535 WAYNE MI
2005-04-07 734-424-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 DEXTER MI
2005-04-07 734-493-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 TRENTON MI
2005-04-07 734-535-2XXX 2000–2999Assigned ACD TELECOM, INC. - MI 3535 FLAT ROCK MI
2005-04-07 734-715-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 LAMBERTVL MI
2005-04-07 734-828-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 DUNDEE MI
2005-04-07 734-843-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 NEW BOSTON MI
2005-04-07 734-970-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 PINCKNEY MI
2005-04-05 734-823-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 DUNDEE MI
2005-04-01 734-393-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 LOSTPNNSUL MI
2005-03-31 734-796-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 BELLEVILLE MI
2005-03-31 734-796-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 BELLEVILLE MI
2005-03-30 734-686-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 ANN ARBOR MI
2005-03-21 734-344-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 MONROE MI
2005-03-21 734-344-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 MONROE MI
2005-03-14 734-217-0XXX 0000–0999Assigned PAETEC ITEL, LLC 829J YPSILANTI MI
2005-03-14 734-225-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J WYANDOTTE MI
2005-03-14 734-403-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J ROMULUS MI
2005-03-14 734-493-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J TRENTON MI
2005-03-11 734-239-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J ANN ARBOR MI
2005-03-10 734-391-5XXX 5000–5999Assigned METROPCS, INC. 5562 BELLEVILLE MI
2005-03-04 734-984-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 FLAT ROCK MI
2005-03-04 734-984-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 FLAT ROCK MI
2005-03-02 734-888-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 NOSYLVANIA MI
2005-02-21 734-446-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 PLYMOUTH MI
2005-02-15 734-236-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J ROCKWOOD MI
2005-02-15 734-244-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MONROE MI
2005-02-15 734-512-7XXX 7000–7999Assigned METROPCS, INC. 5562 TRENTON MI
2005-02-03 734-365-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 TRENTON MI
2005-02-03 734-512-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 TRENTON MI
2005-02-01 734-418-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ANN ARBOR MI
2005-02-01 734-799-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 CARLETON MI
2005-01-31 734-403-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ROMULUS MI
2005-01-28 734-257-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WHITMORELK MI
2005-01-28 734-257-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WHITMORELK MI
2005-01-28 734-257-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WHITMORELK MI
2005-01-28 734-257-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WHITMORELK MI
2005-01-28 734-257-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WHITMORELK MI
2005-01-28 734-257-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WHITMORELK MI
2005-01-28 734-339-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WHITMORELK MI
2005-01-28 734-339-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WHITMORELK MI
2005-01-28 734-339-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WHITMORELK MI
2005-01-28 734-339-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WHITMORELK MI
2005-01-28 734-339-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WHITMORELK MI
2005-01-28 734-339-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WHITMORELK MI
2005-01-28 734-339-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WHITMORELK MI
2005-01-28 734-449-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WHITMORELK MI
2005-01-28 734-688-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PINCKNEY MI
2005-01-28 734-688-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PINCKNEY 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.