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
Clear Download CSV ↓
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 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.