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 989
ACD TELECOM, INC. - MI 16
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
2018-11-15 989-260-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 EAST TAWAS MI
2011-08-08 989-302-9XXX 9000–9999Assigned ACD TELECOM, INC. - MI 3535 HOUGHTONLK MI
2011-08-08 989-349-9XXX 9000–9999Assigned ACD TELECOM, INC. - MI 3535 BIRCH RUN MI
2011-08-08 989-455-9XXX 9000–9999Assigned ACD TELECOM, INC. - MI 3535 VASSAR MI
2011-08-08 989-541-9XXX 9000–9999Assigned ACD TELECOM, INC. - MI 3535 DURAND MI
2011-08-08 989-584-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 CARSONCITY MI
2011-08-08 989-678-9XXX 9000–9999Assigned ACD TELECOM, INC. - MI 3535 OWENDALE MI
2011-08-03 989-847-7XXX 7000–7999Assigned ACD TELECOM, INC. - MI 3535 ASHLEY MI
2011-06-30 989-866-7XXX 7000–7999Assigned ACD TELECOM, INC. - MI 3535 WINN MI
2008-12-26 989-480-9XXX 9000–9999Assigned ACD TELECOM, INC. - MI 3535 FRANKENMTH MI
2008-12-23 989-331-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 ALMA MI
2008-12-23 989-545-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 BAY CITY MI
2008-12-23 989-750-9XXX 9000–9999Assigned ACD TELECOM, INC. - MI 3535 MIDLAND MI
2008-12-23 989-817-9XXX 9000–9999Assigned ACD TELECOM, INC. - MI 3535 MTPLEASANT MI
2008-12-23 989-890-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 SAGINAW MI
2008-12-11 989-403-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 ST JOHNS 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.