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
2012-08-13 336-441-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E SUMMERFLD NC
2012-08-07 336-565-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E KIMESVILLE NC
2012-08-03 336-448-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K WINSTN SAL NC
2012-08-03 336-946-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K LEWISVILLE NC
2012-07-31 336-826-0XXX 0000–0999Assigned UNITED STATES CELLULAR - NC 6282 CRESTON NC
2012-07-13 336-346-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2012-07-12 336-283-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E WINSTN SAL NC
2012-07-12 336-283-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E WINSTN SAL NC
2012-07-05 336-717-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J STONEVILLE NC
2012-07-05 336-895-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 GREENSBORO NC
2012-07-02 336-334-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GREENSBORO NC
2012-07-02 336-383-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GREENSBORO NC
2012-07-02 336-389-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GREENSBORO NC
2012-07-02 336-540-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GREENSBORO NC
2012-06-27 336-487-0XXX 0000–0999Assigned BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 GREENSBORO NC
2012-06-27 336-487-1XXX 1000–1999Assigned BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 GREENSBORO NC
2012-06-27 336-487-2XXX 2000–2999Assigned BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 GREENSBORO NC
2012-06-27 336-487-3XXX 3000–3999Assigned BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 GREENSBORO NC
2012-06-27 336-487-4XXX 4000–4999Assigned BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 GREENSBORO NC
2012-06-27 336-487-5XXX 5000–5999Assigned BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 GREENSBORO NC
2012-06-27 336-487-6XXX 6000–6999Assigned BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 GREENSBORO NC
2012-06-27 336-487-7XXX 7000–7999Assigned BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 GREENSBORO NC
2012-06-27 336-487-8XXX 8000–8999Assigned BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 GREENSBORO NC
2012-06-27 336-487-9XXX 9000–9999Assigned BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 GREENSBORO NC
2012-06-25 336-907-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K GREENSBORO NC
2012-06-25 336-907-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K GREENSBORO NC
2012-06-13 336-281-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E QUAKER GAP NC
2012-06-13 336-415-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 MOUNT AIRY NC
2012-06-13 336-818-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 NOWILKESBO NC
2012-06-13 336-904-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 KERNERSVL NC
2012-06-12 336-283-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E WINSTN SAL NC
2012-06-12 336-290-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E BURLINGTON NC
2012-06-12 336-656-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E MONTICELLO NC
2012-06-12 336-891-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E RUFFIN NC
2012-06-08 336-709-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2012-06-04 336-521-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 ASHEBORO NC
2012-05-15 336-609-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2012-05-15 336-638-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2012-05-14 336-500-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2012-05-14 336-500-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2012-05-14 336-592-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 ROXBORO NC
2012-05-14 336-612-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J EDEN NC
2012-05-14 336-617-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2012-05-14 336-912-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2012-05-14 336-912-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2012-05-14 336-912-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2012-05-02 336-695-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 WINSTN SAL NC
2012-04-03 336-283-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E WINSTN SAL NC
2012-03-28 336-493-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 ASHEBORO NC
2012-03-23 336-355-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E 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.