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 336
CENTURYLINK COMMUNICATIONS, LLC 41
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
2018-01-10 336-890-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GREENSBORO NC
2018-01-10 336-890-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GREENSBORO NC
2017-05-31 336-604-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GREENSBORO NC
2015-05-12 336-594-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J STANLEYVL NC
2015-05-07 336-296-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J KING NC
2015-05-07 336-590-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LEXINGTON NC
2014-02-28 336-871-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SANDYRIDGE NC
2014-02-07 336-850-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MONTICELLO NC
2014-01-30 336-485-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SUMMERFLD NC
2014-01-30 336-518-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J YADKINVL NC
2014-01-30 336-536-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WALNUTCOVE NC
2014-01-30 336-582-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WINSTN SAL NC
2014-01-30 336-933-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J YANCEYVL NC
2014-01-29 336-347-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J REIDSVILLE NC
2014-01-29 336-390-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TIMBERLAKE NC
2014-01-29 336-443-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DOBSON NC
2014-01-29 336-592-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ROXBORO NC
2014-01-29 336-717-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J STONEVILLE NC
2014-01-29 336-739-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SAXAPAHAW NC
2014-01-29 336-754-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WALKERTOWN NC
2014-01-29 336-872-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SEAGROVE NC
2014-01-29 336-891-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J RUFFIN NC
2014-01-28 336-281-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J QUAKER GAP NC
2014-01-28 336-360-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J RAMSEUR NC
2014-01-28 336-415-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MOUNT AIRY NC
2014-01-28 336-444-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PILOT MT NC
2014-01-28 336-453-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MADISON NC
2014-01-28 336-494-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BURLINGTON NC
2014-01-28 336-562-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PROSPECTHL NC
2014-01-28 336-603-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GIBSONVL NC
2014-01-28 336-652-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J KIMESVILLE NC
2014-01-28 336-742-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ANDERSON NC
2014-01-28 336-844-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J NOWILKESBO NC
2014-01-28 336-864-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J EDEN NC
2014-01-28 336-892-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J JULIAN NC
2014-01-28 336-904-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J KERNERSVL NC
2014-01-28 336-914-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DANBURY NC
2013-10-15 336-493-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ASHEBORO NC
2013-10-15 336-530-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ELKIN NC
2013-10-08 336-477-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MOCKSVILLE NC
2013-09-20 336-365-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GREENSBORO NC

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.