NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 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, all time — NPA 313
PEERLESS NETWORK OF MICHIGAN, LLC - MI 59
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
2026-07-24 313-890-3XXX 3000–3999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN5 MI
2026-06-16 313-591-6XXX 6000–6999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN3 MI
2024-10-22 313-344-2XXX 2000–2999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN2 MI
2024-10-22 313-644-5XXX 5000–5999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN3 MI
2024-10-22 313-750-0XXX 0000–0999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN4 MI
2024-10-22 313-776-6XXX 6000–6999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN1 MI
2024-10-22 313-781-4XXX 4000–4999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN6 MI
2023-09-19 313-698-9XXX 9000–9999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN3 MI
2023-07-20 313-817-6XXX 6000–6999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN5 MI
2022-03-07 313-487-9XXX 9000–9999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN1 MI
2022-03-01 313-417-4XXX 4000–4999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN2 MI
2022-01-28 313-490-7XXX 7000–7999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN6 MI
2021-11-29 313-489-9XXX 9000–9999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN5 MI
2021-11-29 313-540-9XXX 9000–9999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN4 MI
2021-06-17 313-548-9XXX 9000–9999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN2 MI
2021-02-16 313-597-9XXX 9000–9999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN5 MI
2020-12-14 313-479-0XXX 0000–0999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN6 MI
2020-12-14 313-591-9XXX 9000–9999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN3 MI
2020-11-18 313-998-1XXX 1000–1999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN1 MI
2020-03-20 313-351-4XXX 4000–4999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN3 MI
2020-03-20 313-362-6XXX 6000–6999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN5 MI
2020-03-20 313-464-0XXX 0000–0999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN6 MI
2020-03-20 313-474-8XXX 8000–8999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN4 MI
2020-03-20 313-946-9XXX 9000–9999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN2 MI
2020-03-18 313-484-2XXX 2000–2999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN1 MI
2019-12-03 313-351-3XXX 3000–3999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN3 MI
2019-12-03 313-425-5XXX 5000–5999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN6 MI
2019-12-03 313-474-7XXX 7000–7999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN4 MI
2019-12-03 313-497-5XXX 5000–5999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN5 MI
2019-12-03 313-710-1XXX 1000–1999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN1 MI
2019-12-03 313-824-3XXX 3000–3999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN2 MI
2019-10-21 313-217-3XXX 3000–3999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN2 MI
2019-09-25 313-474-6XXX 6000–6999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN4 MI
2019-05-22 313-474-5XXX 5000–5999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN4 MI
2019-02-06 313-725-9XXX 9000–9999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN1 MI
2019-02-06 313-751-3XXX 3000–3999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN5 MI
2018-10-01 313-217-9XXX 9000–9999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN2 MI
2018-10-01 313-306-9XXX 9000–9999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN4 MI
2018-10-01 313-356-7XXX 7000–7999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN3 MI
2018-10-01 313-765-8XXX 8000–8999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN6 MI
2018-08-20 313-771-9XXX 9000–9999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN1 MI
2018-04-24 313-332-7XXX 7000–7999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN2 MI
2015-12-01 313-788-1XXX 1000–1999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN3 MI
2015-11-24 313-930-8XXX 8000–8999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN5 MI
2015-10-02 313-992-1XXX 1000–1999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN5 MI
2015-10-01 313-765-1XXX 1000–1999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN6 MI
2013-09-27 313-264-0XXX 0000–0999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN2 MI
2013-09-27 313-307-0XXX 0000–0999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN4 MI
2013-09-27 313-327-0XXX 0000–0999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN3 MI
2013-09-27 313-930-6XXX 6000–6999Assigned PEERLESS NETWORK OF MICHIGAN, LLC - MI 933G DETROITZN5 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.