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
2021-06-11 947-229-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H CLARKSTON MI
2021-06-11 947-229-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H CLARKSTON MI
2021-06-11 947-229-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H CLARKSTON MI
2021-05-26 947-236-6XXX 6000–6999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ROCHESTER MI
2021-05-26 947-236-7XXX 7000–7999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ROCHESTER MI
2021-05-26 947-236-8XXX 8000–8999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ROCHESTER MI
2021-05-26 947-236-9XXX 9000–9999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ROCHESTER MI
2021-05-25 947-447-8XXX 8000–8999Assigned TON80 COMMUNICATIONS, LLC 516J ROCHESTER MI
2021-05-19 947-345-4XXX 4000–4999Assigned ONVOY, LLCV - MI 543C OXFORD MI
2021-05-19 947-345-5XXX 5000–5999Assigned ONVOY, LLCV - MI 543C OXFORD MI
2021-05-19 947-345-7XXX 7000–7999Assigned ONVOY, LLCV - MI 543C OXFORD MI
2021-05-19 947-345-8XXX 8000–8999Assigned ONVOY, LLCV - MI 543C OXFORD MI
2021-05-18 947-226-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H AUBURN HTS MI
2021-05-18 947-227-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H WALLEDLAKE MI
2021-05-18 947-230-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H ROYAL OAK MI
2021-05-18 947-235-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H SOUTHFIELD MI
2021-05-18 947-244-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H ORTONVILLE MI
2021-05-18 947-345-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H OXFORD MI
2021-05-18 947-348-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H SOUTH LYON MI
2021-05-18 947-376-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H TROY MI
2021-05-18 947-400-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H W BLOOMFLD MI
2021-05-18 947-600-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H NORTHVILLE MI
2021-05-17 947-219-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H BIRMINGHAM MI
2021-05-17 947-366-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H FARMINGTON MI
2021-05-13 947-230-1XXX 1000–1999Assigned VONAGE AMERICA LLC 197D ROYAL OAK MI
2021-05-13 947-230-5XXX 5000–5999Assigned VONAGE AMERICA LLC 197D ROYAL OAK MI
2021-05-12 947-226-5XXX 5000–5999Assigned TON80 COMMUNICATIONS, LLC 516J AUBURN HTS MI
2021-05-06 947-233-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 NORTHVILLE MI
2021-05-06 947-895-8XXX 8000–8999Assigned TWILIO INTERNATIONAL, INC. 506J SOUTHFIELD MI
2021-05-05 947-233-4XXX 4000–4999Assigned VONAGE AMERICA LLC 197D NORTHVILLE MI
2021-05-05 947-233-5XXX 5000–5999Assigned VONAGE AMERICA LLC 197D NORTHVILLE MI
2021-05-05 947-237-1XXX 1000–1999Assigned VONAGE AMERICA LLC 197D BIRMINGHAM MI
2021-05-05 947-400-3XXX 3000–3999Assigned VONAGE AMERICA LLC 197D W BLOOMFLD MI
2021-05-05 947-479-2XXX 2000–2999Assigned VONAGE AMERICA LLC 197D ROCHESTER MI
2021-05-05 947-479-3XXX 3000–3999Assigned VONAGE AMERICA LLC 197D ROCHESTER MI
2021-04-30 947-345-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E OXFORD MI
2021-04-29 947-345-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MI 991E OXFORD MI
2021-04-27 947-376-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TROY MI
2021-04-27 947-376-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TROY MI
2021-04-13 947-327-3XXX 3000–3999Assigned TON80 COMMUNICATIONS, LLC 516J ORTONVILLE MI
2021-04-13 947-345-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C OXFORD MI
2021-04-13 947-348-2XXX 2000–2999Assigned ONVOY, LLCV - MI 543C SOUTH LYON MI
2021-04-08 947-376-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J TROY MI
2021-04-05 947-336-8XXX 8000–8999Assigned FRACTEL, LLC 965H NORTHVILLE MI
2021-04-05 947-348-6XXX 6000–6999Assigned FRACTEL, LLC 965H SOUTH LYON MI
2021-03-17 947-479-0XXX 0000–0999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ROCHESTER MI
2021-03-17 947-479-1XXX 1000–1999Assigned OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ROCHESTER MI
2021-03-09 947-235-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2021-03-09 947-235-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2021-03-09 947-235-6XXX 6000–6999Assigned 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.