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
2011-06-22 336-912-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2011-06-17 336-405-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2011-06-17 336-405-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2011-06-17 336-405-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2011-06-17 336-898-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2011-06-17 336-898-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2011-06-17 336-898-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2011-06-17 336-898-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2011-06-17 336-898-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2011-06-17 336-898-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2011-06-10 336-257-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 ASHEBORO NC
2011-06-10 336-417-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 BURLINGTON NC
2011-06-10 336-483-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 ASHEBORO NC
2011-06-02 336-278-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E BURLINGTON NC
2011-05-26 336-447-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GIBSONVL NC
2011-05-26 336-505-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E KIMESVILLE NC
2011-05-24 336-935-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2011-05-18 336-483-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 ASHEBORO NC
2011-05-18 336-483-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 ASHEBORO NC
2011-05-10 336-355-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2011-05-10 336-355-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2011-05-10 336-355-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2011-05-10 336-355-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2011-05-10 336-822-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 HIGH POINT NC
2011-05-09 336-892-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C JULIAN NC
2011-04-29 336-283-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E WINSTN SAL NC
2011-04-29 336-310-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E KERNERSVL NC
2011-04-29 336-546-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E WINSTN SAL NC
2011-04-29 336-546-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E WINSTN SAL NC
2011-04-29 336-560-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E SUMMERFLD NC
2011-04-29 336-564-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E KERNERSVL NC
2011-04-29 336-618-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E WINSTN SAL NC
2011-04-29 336-791-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E REIDSVILLE NC
2011-04-20 336-898-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2011-04-14 336-489-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 WJEFFERSON NC
2011-04-13 336-346-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GREENSBORO NC
2011-04-12 336-825-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2011-03-25 336-448-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINSTN SAL NC
2011-03-25 336-448-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINSTN SAL NC
2011-03-24 336-283-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 WINSTN SAL NC
2011-03-24 336-804-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 HIGH POINT NC
2011-03-24 336-823-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 HIGH POINT NC
2011-03-24 336-858-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 HIGH POINT NC
2011-03-24 336-858-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 HIGH POINT NC
2011-03-21 336-283-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINSTN SAL NC
2011-03-21 336-497-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC 7973 KERNERSVL NC
2011-03-21 336-561-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 THOMASVL NC
2011-03-21 336-561-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 THOMASVL NC
2011-03-21 336-867-1XXX 1000–1999Assigned PIEDMONT COMMUNICATIONS SERVICES, INC. - NC 035B LEXINGTON NC
2011-03-21 336-933-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E YANCEYVL 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.