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 248
ACD TELECOM, INC. - MI 34
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
2006-08-04 248-387-7XXX 7000–7999Assigned ACD TELECOM, INC. - MI 3535 COMMERCE MI
2006-08-04 248-957-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 FARMINGTON MI
2005-12-14 248-260-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 AUBURN HTS MI
2005-12-14 248-566-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 BIRMINGHAM MI
2005-12-14 248-572-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 OXFORD MI
2005-12-14 248-659-6XXX 6000–6999Assigned ACD TELECOM, INC. - MI 3535 ROCHESTER MI
2005-12-14 248-707-7XXX 7000–7999Assigned ACD TELECOM, INC. - MI 3535 CLARKSTON MI
2005-11-08 248-438-7XXX 7000–7999Assigned ACD TELECOM, INC. - MI 3535 WALLEDLAKE MI
2005-11-08 248-504-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 NORTHVILLE MI
2005-11-08 248-573-6XXX 6000–6999Assigned ACD TELECOM, INC. - MI 3535 SOUTH LYON MI
2005-11-08 248-632-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 ROYAL OAK MI
2005-11-08 248-687-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 TROY MI
2005-11-08 248-702-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 W BLOOMFLD MI
2005-11-08 248-732-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 PONTIAC MI
2005-11-08 248-929-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 LAKE ORION MI
2005-10-04 248-416-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 SOUTHFIELD MI
2005-06-16 248-200-1XXX 1000–1999Assigned ACD TELECOM, INC. - MI 3535 SOUTHFIELD MI
2005-06-16 248-215-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 HOLLY MI
2005-06-16 248-218-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 ROCHESTER MI
2005-06-16 248-237-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 AUBURN HTS MI
2005-06-16 248-254-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 W BLOOMFLD MI
2005-06-16 248-264-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 SOUTH LYON MI
2005-06-16 248-277-7XXX 7000–7999Assigned ACD TELECOM, INC. - MI 3535 NORTHVILLE MI
2005-06-16 248-287-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 LAKE ORION MI
2005-06-16 248-295-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 WALLEDLAKE MI
2005-06-16 248-306-4XXX 4000–4999Assigned ACD TELECOM, INC. - MI 3535 FARMINGTON MI
2005-06-16 248-365-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 PONTIAC MI
2005-06-16 248-387-1XXX 1000–1999Assigned ACD TELECOM, INC. - MI 3535 COMMERCE MI
2005-06-16 248-397-7XXX 7000–7999Assigned ACD TELECOM, INC. - MI 3535 ROYAL OAK MI
2005-06-16 248-429-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 OXFORD MI
2005-06-16 248-519-6XXX 6000–6999Assigned ACD TELECOM, INC. - MI 3535 TROY MI
2005-06-16 248-529-9XXX 9000–9999Assigned ACD TELECOM, INC. - MI 3535 MILFDWH LK MI
2005-06-16 248-605-6XXX 6000–6999Assigned ACD TELECOM, INC. - MI 3535 CLARKSTON MI
2005-06-16 248-742-2XXX 2000–2999Assigned ACD TELECOM, INC. - MI 3535 DRAYTON PL 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.