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 302
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
2017-12-14 302-433-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WILMINGTON DE
2014-06-17 302-508-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SMYRNA DE
2014-06-10 302-317-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NEW CASTLE DE
2014-06-10 302-317-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NEW CASTLE DE
2014-05-23 302-260-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J REHOBOTH DE
2014-05-23 302-313-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LEWES DE
2014-05-23 302-314-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MIDDLETOWN DE
2014-05-23 302-404-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SEAFORD DE
2014-05-23 302-440-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DELAWARECY DE
2014-05-23 302-956-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BRIDGEVL DE
2014-05-23 302-988-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SELBYVILLE DE
2014-05-01 302-217-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GEORGETOWN DE
2014-05-01 302-316-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MILLSBORO DE
2014-05-01 302-364-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DAGSBORO DE
2014-05-01 302-398-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HARRINGTON DE
2014-05-01 302-402-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OCEAN VIEW DE
2014-05-01 302-481-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GUMBORO DE
2014-05-01 302-497-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LAUREL DE
2014-05-01 302-643-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MILTON DE
2014-05-01 302-698-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CAMDEN DE
2014-05-01 302-751-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FREDERICA DE
2014-05-01 302-779-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HARTLY DE
2014-05-01 302-870-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FELTON DE
2014-05-01 302-907-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DELMAR DE
2014-05-01 302-966-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ANGOLA DE
2014-03-04 302-213-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DOVER DE
2014-03-04 302-281-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HOLLY OAK DE
2014-03-04 302-307-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HOCKESSIN DE
2014-03-04 302-930-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MILFORD DE
2013-11-04 302-273-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NEWARK DE
2013-11-04 302-317-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NEW CASTLE DE
2013-11-04 302-502-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WILMINGTON DE
2013-11-04 302-754-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GREENWOOD DE

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.