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
CENTURYLINK COMMUNICATIONS, LLC 33
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
2016-10-04 734-800-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ANN ARBOR MI
2016-08-01 734-767-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WYANDOTTE MI
2014-07-25 734-235-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J IDA MI
2014-06-12 734-530-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WYANDOTTE MI
2014-06-12 734-559-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TRENTON MI
2014-06-12 734-725-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WAYNE MI
2014-04-16 734-702-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WHITMORELK MI
2014-03-19 734-888-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NOSYLVANIA MI
2014-03-07 734-234-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TEMPERANCE MI
2014-03-07 734-315-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NEW BOSTON MI
2014-03-07 734-470-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SALINE MI
2014-03-07 734-708-9XXX 9000–9999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MAYBEE MI
2014-03-07 734-875-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LOSTPNNSUL MI
2014-03-07 734-969-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ROCKWOOD MI
2014-03-04 734-212-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MANCHESTER MI
2014-03-04 734-270-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WILLIS MI
2014-03-04 734-375-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GREGORY MI
2014-03-04 734-526-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MILAN MI
2014-03-04 734-659-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ERIE MI
2014-03-04 734-739-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PINCKNEY MI
2014-03-04 734-984-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FLAT ROCK MI
2014-02-24 734-388-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DEXTER MI
2014-02-24 734-391-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BELLEVILLE MI
2014-02-24 734-506-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CARLETON MI
2014-02-24 734-568-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LAMBERTVL MI
2014-02-24 734-636-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MONROE MI
2014-02-24 734-746-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DUNDEE MI
2014-02-20 734-719-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CHELSEA MI
2013-02-05 734-221-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J YPSILANTI MI
2013-01-28 734-456-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PLYMOUTH MI
2013-01-28 734-655-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LIVONIA MI
2013-01-28 734-680-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ANN ARBOR MI
2013-01-28 734-784-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ROMULUS 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.