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
2020-09-21 947-957-9XXX 9000–9999Assigned ONVOY, LLCV - MI 543C PONTIAC MI
2020-09-09 947-219-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MI 6120 BIRMINGHAM MI
2020-09-03 947-224-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 SOUTHFIELD MI
2020-09-03 947-224-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 SOUTHFIELD MI
2020-09-03 947-224-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 SOUTHFIELD MI
2020-08-28 947-218-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C TROY MI
2020-08-28 947-218-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C TROY MI
2020-08-28 947-465-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C COMMERCE MI
2020-08-28 947-500-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C PONTIAC MI
2020-08-28 947-500-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C PONTIAC MI
2020-08-28 947-500-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C PONTIAC MI
2020-08-28 947-886-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C PONTIAC MI
2020-08-28 947-900-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C SOUTHFIELD MI
2020-08-26 947-500-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2020-08-26 947-500-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2020-08-26 947-500-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2020-08-26 947-500-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2020-08-25 947-881-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E SOUTHFIELD MI
2020-08-25 947-881-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E SOUTHFIELD MI
2020-08-25 947-881-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E SOUTHFIELD MI
2020-08-25 947-881-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E SOUTHFIELD MI
2020-08-25 947-881-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E SOUTHFIELD MI
2020-08-25 947-881-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E SOUTHFIELD MI
2020-08-25 947-881-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E SOUTHFIELD MI
2020-08-25 947-881-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E SOUTHFIELD MI
2020-08-25 947-881-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E SOUTHFIELD MI
2020-08-19 947-214-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C WALLEDLAKE MI
2020-08-19 947-217-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C SOUTHFIELD MI
2020-08-19 947-217-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C SOUTHFIELD MI
2020-08-19 947-218-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C TROY MI
2020-08-19 947-218-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C TROY MI
2020-08-19 947-224-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C SOUTHFIELD MI
2020-08-19 947-225-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C HOLLY MI
2020-08-19 947-225-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C HOLLY MI
2020-08-19 947-225-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C HOLLY MI
2020-08-19 947-226-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 AUBURN HTS MI
2020-08-19 947-300-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C CLARKSTON MI
2020-08-19 947-300-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C CLARKSTON MI
2020-08-19 947-600-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C NORTHVILLE MI
2020-08-19 947-600-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C NORTHVILLE MI
2020-08-19 947-622-6XXX 6000–6999Assigned ONVOY, LLCV - MI 543C LAKE ORION MI
2020-08-18 947-217-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2020-08-18 947-217-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2020-08-13 947-203-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C OXFORD MI
2020-08-13 947-203-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C OXFORD MI
2020-08-13 947-207-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C SOUTH LYON MI
2020-08-13 947-225-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C HOLLY MI
2020-08-13 947-225-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C HOLLY MI
2020-07-28 947-214-7XXX 7000–7999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G WALLEDLAKE MI
2020-07-28 947-225-8XXX 8000–8999Assigned METROPCS, INC. 5562 HOLLY 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.