NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

29 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 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
2022-01-06 947-245-0XXX 0000–0999Assigned ONVOY, LLCV - MI 543C DRAYTON PL MI
2022-01-06 947-245-3XXX 3000–3999Assigned TON80 COMMUNICATIONS, LLC 516J DRAYTON PL MI
2022-01-06 947-245-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C DRAYTON PL MI
2022-01-05 947-241-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2022-01-05 947-241-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2022-01-05 947-241-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2022-01-05 947-241-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2022-01-05 947-241-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2022-01-05 947-241-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2022-01-05 947-241-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2022-01-05 947-241-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2022-01-05 947-241-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2022-01-05 947-241-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2022-01-04 947-249-9XXX 9000–9999Assigned BOOST SUBSCRIBERCO L.L.C. 490J HOLLY MI
2022-01-04 947-251-9XXX 9000–9999Assigned BOOST SUBSCRIBERCO L.L.C. 490J OXFORD MI
2022-01-04 947-257-9XXX 9000–9999Assigned BOOST SUBSCRIBERCO L.L.C. 490J PONTIAC MI
2021-12-30 947-348-0XXX 0000–0999Assigned BOOST SUBSCRIBERCO L.L.C. 490J SOUTH LYON MI
2021-12-22 947-238-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H SOUTHFIELD MI
2021-12-22 947-238-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H SOUTHFIELD MI
2021-12-22 947-242-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H W BLOOMFLD MI
2021-12-22 947-242-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H W BLOOMFLD MI
2021-12-22 947-944-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H FARMINGTON MI
2021-12-22 947-944-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H FARMINGTON MI
2021-12-20 947-233-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 NORTHVILLE MI
2021-12-20 947-729-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H ROYAL OAK MI
2021-12-20 947-729-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H ROYAL OAK MI
2021-12-20 947-729-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H ROYAL OAK MI
2021-12-20 947-729-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H ROYAL OAK MI
2021-12-17 947-233-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H NORTHVILLE MI
2021-12-14 947-233-1XXX 1000–1999Assigned ONVOY, LLCV - MI 543C NORTHVILLE MI
2021-12-14 947-233-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C NORTHVILLE MI
2021-12-14 947-233-3XXX 3000–3999Assigned ONVOY, LLCV - MI 543C NORTHVILLE MI
2021-11-24 947-529-3XXX 3000–3999Assigned FRACTEL, LLC 965H BIRMINGHAM MI
2021-11-24 947-529-9XXX 9000–9999Assigned FRACTEL, LLC 965H BIRMINGHAM MI
2021-11-03 947-247-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 HOLLY MI
2021-11-02 947-223-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H COMMERCE MI
2021-11-02 947-223-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H COMMERCE MI
2021-11-02 947-226-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H AUBURN HTS MI
2021-11-02 947-226-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H AUBURN HTS MI
2021-11-02 947-227-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H WALLEDLAKE MI
2021-11-02 947-227-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H WALLEDLAKE MI
2021-11-02 947-239-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H CLARKSTON MI
2021-11-02 947-239-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H CLARKSTON MI
2021-11-01 947-238-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2021-11-01 947-238-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2021-11-01 947-238-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2021-11-01 947-238-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2021-11-01 947-238-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2021-11-01 947-238-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2021-11-01 947-238-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD 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.