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 971
CENTURYLINK COMMUNICATIONS, LLC 30
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
2018-04-27 971-754-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PORTLAND OR
2016-05-18 971-940-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PORTLAND OR
2016-05-11 971-724-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BEAVERTON OR
2015-05-11 971-206-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CLACKAMAS OR
2015-05-11 971-712-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PORTLAND OR
2015-05-11 971-718-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SALEM OR
2015-05-11 971-772-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WOODBURN OR
2014-01-29 971-316-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND IS OR
2014-01-29 971-318-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J AMITY OR
2014-01-24 971-203-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ST HELENS OR
2014-01-24 971-213-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SHERWOOD OR
2014-01-24 971-314-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J VERNONIA OR
2014-01-24 971-320-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SEASIDE OR
2014-01-24 971-343-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SILVERTON OR
2014-01-23 971-251-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J RAINIER OR
2014-01-22 971-307-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FALLS CITY OR
2014-01-22 971-333-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HOOD LAND OR
2014-01-22 971-800-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MILL CITY OR
2013-12-12 971-308-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CANNON BCH OR
2013-11-20 971-260-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CLATSKANIE OR
2013-11-20 971-261-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MCMINNVL OR
2013-11-20 971-281-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NEWBERG OR
2013-11-20 971-704-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ASTORIA OR
2013-11-14 971-306-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ROCKAWAY OR
2013-11-14 971-309-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WILLAMINA OR
2013-10-30 971-257-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CLOVERDALE OR
2013-10-30 971-265-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GARIBALDI OR
2013-06-24 971-317-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BEAVERTON OR
2013-06-07 971-802-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SHERIDAN OR
2013-04-24 971-274-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRESHAM OR

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.