NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

29 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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 947
NEW CINGULAR WIRELESS PCS, LLC - IL 27
INTRADO COMMUNICATIONS, LLC 1
BANDWIDTH.COM CLEC, LLC - MI 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
2020-07-28 947-225-9XXX 9000–9999Assigned METROPCS, INC. 5562 HOLLY MI
2020-07-28 947-941-0XXX 0000–0999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G ROYAL OAK MI
2020-07-14 947-216-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 FARMINGTON MI
2020-07-14 947-219-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 BIRMINGHAM MI
2020-07-14 947-600-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 NORTHVILLE MI
2020-06-25 947-204-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H MILFDWH LK MI
2020-06-25 947-204-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H MILFDWH LK MI
2020-06-25 947-204-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H MILFDWH LK MI
2020-06-25 947-223-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C COMMERCE MI
2020-06-25 947-223-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C COMMERCE MI
2020-06-25 947-224-2XXX 2000–2999Assigned CSC WIRELESS, LLC 425J SOUTHFIELD MI
2020-06-24 947-941-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C ROYAL OAK MI
2020-06-24 947-941-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C ROYAL OAK MI
2020-06-22 947-201-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C AUBURN HTS MI
2020-06-22 947-201-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C AUBURN HTS MI
2020-06-22 947-216-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C FARMINGTON MI
2020-06-22 947-219-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C BIRMINGHAM MI
2020-06-22 947-219-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C BIRMINGHAM MI
2020-06-22 947-221-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C DRAYTON PL MI
2020-06-22 947-221-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C DRAYTON PL MI
2020-06-22 947-300-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C CLARKSTON MI
2020-06-22 947-300-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C CLARKSTON MI
2020-06-19 947-204-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C MILFDWH LK MI
2020-06-19 947-217-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C SOUTHFIELD MI
2020-06-19 947-217-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C SOUTHFIELD MI
2020-06-19 947-500-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C PONTIAC MI
2020-06-18 947-214-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C WALLEDLAKE MI
2020-06-18 947-214-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C WALLEDLAKE MI
2020-06-18 947-218-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C TROY MI
2020-06-18 947-218-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C TROY MI
2020-06-10 947-207-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E SOUTH LYON MI
2020-06-04 947-218-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E TROY MI
2020-06-02 947-622-7XXX 7000–7999Assigned METROPCS, INC. 5562 LAKE ORION MI
2020-06-01 947-218-8XXX 8000–8999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G TROY MI
2020-05-15 947-203-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C OXFORD MI
2020-05-15 947-203-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C OXFORD MI
2020-05-15 947-207-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C SOUTH LYON MI
2020-05-15 947-207-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C SOUTH LYON MI
2020-05-15 947-207-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C SOUTH LYON MI
2020-05-05 947-600-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 NORTHVILLE MI
2020-05-01 947-400-0XXX 0000–0999Assigned FRACTEL, LLC 965H W BLOOMFLD MI
2020-05-01 947-400-4XXX 4000–4999Assigned FRACTEL, LLC 965H W BLOOMFLD MI
2020-04-21 947-217-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 SOUTHFIELD MI
2020-04-20 947-217-4XXX 4000–4999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G SOUTHFIELD MI
2020-04-09 947-216-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E FARMINGTON MI
2020-03-31 947-217-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2020-03-31 947-217-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2020-03-31 947-218-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TROY MI
2020-02-19 947-886-6XXX 6000–6999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G PONTIAC MI
2020-02-13 947-886-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.