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 512
CENTURYLINK COMMUNICATIONS, LLC 29
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
2016-07-13 512-358-9XXX 9000–9999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J AUSTIN TX
2015-08-26 512-894-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DRIPPNGSPG TX
2015-02-17 512-409-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BASTROP TX
2014-08-19 512-840-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J AUSTIN TX
2014-08-08 512-755-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BURNET TX
2014-04-04 512-690-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LEANDER TX
2014-04-04 512-862-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SANGABRIEL TX
2014-03-14 512-277-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BERTRAM TX
2014-03-14 512-429-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ROCKDALE TX
2014-03-14 512-489-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BRIGGS TX
2014-03-14 512-575-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SMITHVILLE TX
2014-03-14 512-598-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J JARRELL TX
2014-03-14 512-842-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WIMBERLEY TX
2014-03-14 512-859-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRANGER TX
2014-03-14 512-980-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MCDADE TX
2014-03-12 512-212-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MARTINDALE TX
2014-03-12 512-256-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J KYLE TX
2014-03-12 512-488-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FENTRESS TX
2014-03-12 512-515-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LIBERTY HL TX
2014-03-12 512-620-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LOCKHART TX
2014-03-12 512-641-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ADAMSVILLE TX
2014-03-12 512-793-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BUCHANNDAM TX
2014-03-12 512-856-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J COUPLAND TX
2013-11-20 512-240-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GEORGETOWN TX
2013-11-20 512-455-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MILANO TX
2013-11-20 512-759-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HUTTO TX
2013-11-20 512-991-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LOMETA TX
2013-02-08 512-822-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J AUSTIN TX
2012-11-15 512-781-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SAN MARCOS TX

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.