NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

0 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, all time — NPA 947
TELEPORT COMMUNICATIONS AMERICA, LLC - MI 94
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
2025-08-27 947-294-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E BIRMINGHAM MI
2025-06-02 947-291-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E BIRMINGHAM MI
2024-05-22 947-287-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E PONTIAC MI
2024-05-22 947-287-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E PONTIAC MI
2024-05-20 947-287-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E PONTIAC MI
2024-05-20 947-287-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E PONTIAC MI
2024-05-20 947-287-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E PONTIAC MI
2024-03-01 947-276-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E PONTIAC MI
2022-12-02 947-230-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2022-04-25 947-257-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E PONTIAC MI
2021-10-05 947-524-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2021-10-05 947-524-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2021-10-05 947-524-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2021-10-05 947-524-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2021-10-05 947-524-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2021-10-05 947-524-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2021-10-05 947-524-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2021-10-05 947-524-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2021-10-05 947-524-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2021-10-05 947-524-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2020-10-29 947-224-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E SOUTHFIELD 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
2020-04-09 947-216-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E FARMINGTON MI
2019-10-31 947-518-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2019-10-31 947-518-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2019-10-31 947-518-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2019-10-31 947-518-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2019-10-31 947-518-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2019-10-31 947-518-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2019-10-31 947-518-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2019-10-31 947-518-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2019-10-31 947-518-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2019-10-31 947-518-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2019-10-31 947-519-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2019-10-31 947-519-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2019-10-31 947-519-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2019-10-31 947-519-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2019-10-31 947-519-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2019-10-31 947-519-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2019-10-31 947-519-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2019-10-31 947-519-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK MI
2019-10-31 947-519-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MI 770E ROYAL OAK 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.