NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 734
ACD TELECOM, INC. - MI 46
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
2006-08-04 734-531-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 ANN ARBOR MI
2005-12-14 734-217-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 YPSILANTI MI
2005-12-14 734-270-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 WILLIS MI
2005-12-14 734-286-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 WYANDOTTE MI
2005-12-14 734-316-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 SALINE MI
2005-12-14 734-419-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 WAYNE MI
2005-12-14 734-442-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 ROMULUS MI
2005-12-14 734-512-1XXX 1000–1999Assigned ACD TELECOM, INC. - MI 3535 TRENTON MI
2005-12-14 734-550-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 WHITMORELK MI
2005-12-14 734-606-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 NEW BOSTON MI
2005-12-14 734-681-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 MILAN MI
2005-12-14 734-682-6XXX 6000–6999Assigned ACD TELECOM, INC. - MI 3535 MONROE MI
2005-12-14 734-928-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 PLYMOUTH MI
2005-12-14 734-954-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 PINCKNEY MI
2005-11-09 734-345-7XXX 7000–7999Assigned ACD TELECOM, INC. - MI 3535 BELLEVILLE MI
2005-11-09 734-385-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 CHELSEA MI
2005-11-09 734-388-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 DEXTER MI
2005-11-09 734-396-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 MANCHESTER MI
2005-11-09 734-402-9XXX 9000–9999Assigned ACD TELECOM, INC. - MI 3535 LIVONIA MI
2005-04-07 734-206-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 TEMPERANCE MI
2005-04-07 734-212-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 MANCHESTER MI
2005-04-07 734-215-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 MILAN MI
2005-04-07 734-217-1XXX 1000–1999Assigned ACD TELECOM, INC. - MI 3535 YPSILANTI MI
2005-04-07 734-225-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 WYANDOTTE MI
2005-04-07 734-230-6XXX 6000–6999Assigned ACD TELECOM, INC. - MI 3535 MONROE MI
2005-04-07 734-233-2XXX 2000–2999Assigned ACD TELECOM, INC. - MI 3535 PLYMOUTH MI
2005-04-07 734-236-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 ROCKWOOD MI
2005-04-07 734-237-2XXX 2000–2999Assigned ACD TELECOM, INC. - MI 3535 LIVONIA MI
2005-04-07 734-252-1XXX 1000–1999Assigned ACD TELECOM, INC. - MI 3535 BELLEVILLE MI
2005-04-07 734-256-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 WILLIS MI
2005-04-07 734-269-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 IDA MI
2005-04-07 734-271-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 CARLETON MI
2005-04-07 734-316-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 SALINE MI
2005-04-07 734-317-2XXX 2000–2999Assigned ACD TELECOM, INC. - MI 3535 ERIE MI
2005-04-07 734-375-2XXX 2000–2999Assigned ACD TELECOM, INC. - MI 3535 GREGORY MI
2005-04-07 734-385-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 CHELSEA MI
2005-04-07 734-403-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 ROMULUS MI
2005-04-07 734-405-4XXX 4000–4999Assigned ACD TELECOM, INC. - MI 3535 WAYNE MI
2005-04-07 734-424-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 DEXTER MI
2005-04-07 734-493-5XXX 5000–5999Assigned ACD TELECOM, INC. - MI 3535 TRENTON MI
2005-04-07 734-535-2XXX 2000–2999Assigned ACD TELECOM, INC. - MI 3535 FLAT ROCK MI
2005-04-07 734-715-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 LAMBERTVL MI
2005-04-07 734-828-0XXX 0000–0999Assigned ACD TELECOM, INC. - MI 3535 DUNDEE MI
2005-04-07 734-843-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 NEW BOSTON MI
2005-04-07 734-970-8XXX 8000–8999Assigned ACD TELECOM, INC. - MI 3535 PINCKNEY MI
2005-03-30 734-686-3XXX 3000–3999Assigned ACD TELECOM, INC. - MI 3535 ANN ARBOR MI

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.