NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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 318
CENTURYLINK COMMUNICATIONS, LLC 27
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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2016-09-09 318-570-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MONROE LA
2014-08-06 318-499-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MER ROUGE LA
2014-08-06 318-723-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FTNECESSTY LA
2014-08-05 318-217-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WATERPROOF LA
2014-08-05 318-353-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LISBON LA
2014-08-05 318-520-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CASTOR LA
2014-08-05 318-565-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HORNBECK LA
2014-08-05 318-575-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MANSFIELD LA
2014-08-05 318-576-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SALINE LA
2014-08-05 318-722-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CROWVILLE LA
2014-08-05 318-775-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J KEITHVILLE LA
2014-08-05 318-843-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GIBSLAND LA
2014-08-05 318-887-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CONVERSE LA
2014-08-05 318-995-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OIL CITY LA
2014-08-04 318-233-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GEORGETOWN LA
2014-08-04 318-346-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BUNKIE LA
2014-08-04 318-370-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DRY PRONG LA
2014-08-04 318-373-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MONTGOMERY LA
2014-08-04 318-531-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SICILY IS LA
2014-08-04 318-744-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HARRISONBG LA
2014-08-01 318-421-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MONTEREY LA
2014-03-07 318-506-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DELTA LA
2014-01-16 318-582-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MONROE LA
2014-01-16 318-606-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SHREVEPORT LA
2014-01-07 318-604-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J COTTONPORT LA
2008-05-30 318-990-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SHREVEPORT LA
2008-05-30 318-990-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SHREVEPORT LA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.