NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

4 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, last 30 days — NPA 336
HD CARRIER LLC 3
ONVOY, LLC - NC 1
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
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
2014-01-29 336-551-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 BOONVILLE 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
2014-01-29 336-975-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 STATE ROAD 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
2014-01-28 336-696-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 HAYS 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
2014-01-28 336-863-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 MULBERRY 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
2014-01-27 336-830-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K WINSTN SAL NC
2014-01-24 336-390-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E TIMBERLAKE NC
2014-01-21 336-871-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E SANDYRIDGE NC
2014-01-20 336-715-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E JULIAN NC
2014-01-07 336-417-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 BURLINGTON NC
2014-01-07 336-417-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 BURLINGTON NC
2013-12-17 336-763-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K GREENSBORO NC
2013-12-17 336-763-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K GREENSBORO NC
2013-12-17 336-763-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K GREENSBORO NC
2013-12-11 336-715-3XXX 3000–3999Assigned ONVOY, LLC - NC 638E JULIAN NC
2013-12-05 336-221-3XXX 3000–3999Assigned ONVOY, LLC - NC 638E BURLINGTON NC
2013-12-05 336-347-4XXX 4000–4999Assigned ONVOY, LLC - NC 638E REIDSVILLE NC
2013-12-05 336-485-4XXX 4000–4999Assigned ONVOY, LLC - NC 638E SUMMERFLD NC
2013-12-05 336-652-3XXX 3000–3999Assigned ONVOY, LLC - NC 638E KIMESVILLE NC
2013-12-05 336-656-2XXX 2000–2999Assigned ONVOY, LLC - NC 638E MONTICELLO NC
2013-12-05 336-738-3XXX 3000–3999Assigned ONVOY, LLC - NC 638E ANDERSON NC
2013-12-05 336-739-4XXX 4000–4999Assigned ONVOY, LLC - NC 638E SAXAPAHAW NC
2013-12-05 336-750-6XXX 6000–6999Assigned ONVOY, LLC - NC 638E WINSTN SAL NC
2013-12-05 336-891-3XXX 3000–3999Assigned ONVOY, LLC - NC 638E RUFFIN NC
2013-12-03 336-875-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC 7973 HIGH POINT NC
2013-11-15 336-477-8XXX 8000–8999Assigned PEERLESS NETWORK OF NORTH CAROLINA, LLC - NC 350F MOCKSVILLE NC
2013-11-07 336-265-3XXX 3000–3999Assigned NORTH STATE COMMUNICATIONS ADVANCED SVCS, LLC-NC 361F GREENSBORO NC

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.