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
2020-08-24 734-583-5XXX 5000–5999Assigned METROPCS, INC. 5562 BELLEVILLE MI
2020-08-24 734-897-2XXX 2000–2999Assigned METROPCS, INC. 5562 FLAT ROCK MI
2020-08-24 734-897-3XXX 3000–3999Assigned METROPCS, INC. 5562 FLAT ROCK MI
2020-08-17 734-733-3XXX 3000–3999Assigned FRACTEL, LLC 965H CARLETON MI
2020-08-13 734-336-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C MANCHESTER MI
2020-08-13 734-336-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C MANCHESTER MI
2020-08-13 734-472-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C TRENTON MI
2020-08-13 734-472-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C TRENTON MI
2020-08-13 734-593-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C CHELSEA MI
2020-08-13 734-600-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C NEWPORT MI
2020-08-13 734-600-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C NEWPORT MI
2020-08-13 734-627-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C CHELSEA MI
2020-08-13 734-715-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C LAMBERTVL MI
2020-08-13 734-715-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C LAMBERTVL MI
2020-08-10 734-264-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C MONROE MI
2020-08-10 734-264-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C MONROE MI
2020-08-10 734-441-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C ROCKWOOD MI
2020-08-10 734-441-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C ROCKWOOD MI
2020-07-22 734-519-3XXX 3000–3999Assigned METROPCS, INC. 5562 ANN ARBOR MI
2020-07-22 734-519-4XXX 4000–4999Assigned METROPCS, INC. 5562 ANN ARBOR MI
2020-07-14 734-519-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ANN ARBOR MI
2020-07-14 734-715-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E LAMBERTVL MI
2020-07-14 734-802-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 YPSILANTI MI
2020-06-29 734-410-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 MONROE MI
2020-06-25 734-724-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H DEXTER MI
2020-06-25 734-724-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H DEXTER MI
2020-06-25 734-724-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H DEXTER MI
2020-06-15 734-526-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E MILAN MI
2020-06-08 734-264-8XXX 8000–8999Assigned METROPCS, INC. 5562 MONROE MI
2020-06-04 734-519-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ANN ARBOR MI
2020-06-04 734-519-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ANN ARBOR MI
2020-05-28 734-412-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E ANN ARBOR MI
2020-05-26 734-492-7XXX 7000–7999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G ANN ARBOR MI
2020-05-21 734-639-8XXX 8000–8999Assigned METROPCS, INC. 5562 MONROE MI
2020-05-15 734-212-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C MANCHESTER MI
2020-05-15 734-215-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C MILAN MI
2020-05-15 734-336-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C MANCHESTER MI
2020-05-15 734-583-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C BELLEVILLE MI
2020-05-15 734-583-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C BELLEVILLE MI
2020-05-15 734-583-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C BELLEVILLE MI
2020-05-15 734-628-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C MILAN MI
2020-05-05 734-356-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ANN ARBOR MI
2020-05-04 734-601-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 LIVONIA MI
2020-05-01 734-601-2XXX 2000–2999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G LIVONIA MI
2020-04-23 734-371-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E DUNDEE MI
2020-04-20 734-294-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 BELLEVILLE MI
2020-04-09 734-415-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C NEW BOSTON MI
2020-04-09 734-415-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C NEW BOSTON MI
2020-04-09 734-415-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C NEW BOSTON MI
2020-04-09 734-440-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C NEW BOSTON 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.