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 616
ACD TELECOM, INC. - MI 32
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
2004-10-04 616-384-7XXX 7000–7999Assigned ACD TELECOM, INC. - MI 3535 COOPERSVL MI
2004-10-04 616-537-7XXX 7000–7999Assigned ACD TELECOM, INC. - MI 3535 LAKEODESSA MI
2004-10-04 616-841-7XXX 7000–7999Assigned ACD TELECOM, INC. - MI 3535 IONIA MI
2004-08-23 616-200-1XXX 1000–1999Assigned ACD TELECOM, INC. - MI 3535 TRUFANT MI
2004-08-23 616-421-1XXX 1000–1999Assigned ACD TELECOM, INC. - MI 3535 LOWELL MI
2004-08-23 616-431-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 MARNE MI
2004-08-23 616-433-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 ROCKFORD MI
2004-08-23 616-520-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 SPARTA MI
2004-08-23 616-557-1XXX 1000–1999Assigned ACD TELECOM, INC. - MI 3535 SAND LAKE MI
2004-08-23 616-631-1XXX 1000–1999Assigned ACD TELECOM, INC. - MI 3535 MOLINE MI
2004-08-23 616-642-7XXX 7000–7999Assigned ACD TELECOM, INC. - MI 3535 SARANAC MI
2004-08-23 616-678-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 KENT CITY MI
2004-08-23 616-741-7XXX 7000–7999Assigned ACD TELECOM, INC. - MI 3535 ZEELAND MI
2004-08-17 616-217-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 BYRON CTR MI
2004-08-17 616-244-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 BELDING MI
2004-08-17 616-263-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 CEDAR SPG MI
2004-08-17 616-359-1XXX 1000–1999Assigned ACD TELECOM, INC. - MI 3535 DORR MI
2004-08-17 616-371-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 JAMESTOWN MI
2004-08-17 616-379-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 HUDSONVL MI
2004-08-17 616-425-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 ADA MI
2004-08-17 616-499-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 HOLLAND MI
2004-08-17 616-504-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 CLARKSVL MI
2004-08-17 616-524-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 GRATTAN MI
2004-08-17 616-536-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 CALEDONIA MI
2004-08-17 616-548-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 GREENVILLE MI
2004-08-17 616-604-7XXX 7000–7999Assigned ACD TELECOM, INC. - MI 3535 GRANDHAVEN MI
2004-08-17 616-622-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 ALTO MI
2004-08-17 616-765-1XXX 1000–1999Assigned ACD TELECOM, INC. - MI 3535 FREEPORT MI
2004-08-17 616-871-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 DUTTON MI
2004-08-17 616-899-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 CONKLIN MI
2004-08-12 616-773-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 GRAND RPDS MI
2004-08-12 616-773-7XXX 7000–7999Assigned ACD TELECOM, INC. - MI 3535 GRAND RPDS 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.