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
2020-04-09 734-550-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C WHITMORELK MI
2020-04-09 734-550-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C WHITMORELK MI
2020-04-09 734-954-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C PINCKNEY MI
2020-04-08 734-849-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C LOSTPNNSUL MI
2020-04-08 734-849-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C LOSTPNNSUL MI
2020-04-08 734-875-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C LOSTPNNSUL MI
2020-04-08 734-875-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C LOSTPNNSUL MI
2020-04-02 734-356-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2020-04-02 734-356-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2020-04-02 734-492-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2020-04-02 734-492-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ANN ARBOR MI
2020-03-31 734-839-5XXX 5000–5999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G WHITMORELK MI
2020-03-24 734-356-8XXX 8000–8999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G ANN ARBOR MI
2020-03-20 734-356-5XXX 5000–5999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G ANN ARBOR MI
2020-03-20 734-356-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ANN ARBOR MI
2020-03-11 734-356-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J ANN ARBOR MI
2020-02-20 734-356-7XXX 7000–7999Assigned FRACTEL, LLC 965H ANN ARBOR MI
2020-02-20 734-356-9XXX 9000–9999Assigned FRACTEL, LLC 965H ANN ARBOR MI
2020-02-20 734-766-3XXX 3000–3999Assigned FRACTEL, LLC 965H ERIE MI
2020-02-20 734-766-6XXX 6000–6999Assigned FRACTEL, LLC 965H ERIE MI
2020-02-12 734-280-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WYANDOTTE MI
2020-02-12 734-280-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WYANDOTTE MI
2020-02-12 734-304-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TRENTON MI
2020-02-12 734-346-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TRENTON MI
2020-02-12 734-559-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TRENTON MI
2020-01-24 734-899-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 WAYNE MI
2020-01-16 734-583-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BELLEVILLE MI
2020-01-16 734-583-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BELLEVILLE MI
2020-01-15 734-803-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ANN ARBOR MI
2020-01-15 734-803-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ANN ARBOR MI
2020-01-15 734-803-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ANN ARBOR MI
2020-01-15 734-803-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ANN ARBOR MI
2020-01-15 734-803-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ANN ARBOR MI
2020-01-15 734-803-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ANN ARBOR MI
2020-01-15 734-803-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ANN ARBOR MI
2020-01-15 734-803-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ANN ARBOR MI
2020-01-15 734-803-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ANN ARBOR MI
2020-01-15 734-803-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ANN ARBOR MI
2020-01-14 734-807-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C TEMPERANCE MI
2020-01-14 734-807-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C TEMPERANCE MI
2020-01-09 734-294-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C BELLEVILLE MI
2020-01-09 734-294-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C BELLEVILLE MI
2020-01-09 734-294-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C BELLEVILLE MI
2020-01-09 734-498-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C GREGORY MI
2020-01-09 734-498-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C GREGORY MI
2020-01-09 734-498-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C GREGORY MI
2020-01-09 734-508-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C MILAN MI
2020-01-09 734-526-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C MILAN MI
2020-01-09 734-600-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C NEWPORT MI
2020-01-09 734-600-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C NEWPORT 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.