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
2011-02-04 336-618-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 WINSTN SAL NC
2011-02-04 336-695-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 WINSTN SAL NC
2011-02-04 336-695-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 WINSTN SAL NC
2011-02-04 336-695-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 WINSTN SAL NC
2011-02-04 336-695-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 WINSTN SAL NC
2011-02-04 336-705-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 WINSTN SAL NC
2011-02-04 336-757-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 WINSTN SAL NC
2011-02-04 336-936-3XXX 3000–3999Assigned BRIGHTSPEED OF NORTH CAROLINA, LLC 0471 MOCKSVILLE NC
2011-01-21 336-415-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 MOUNT AIRY NC
2011-01-21 336-415-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 MOUNT AIRY NC
2011-01-17 336-514-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E YANCEYVL NC
2011-01-12 336-223-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E BURLINGTON NC
2011-01-12 336-422-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E WINSTN SAL NC
2011-01-12 336-422-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E WINSTN SAL NC
2011-01-12 336-496-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E REIDSVILLE NC
2011-01-12 336-497-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E KERNERSVL NC
2011-01-12 336-517-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2011-01-12 336-541-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2011-01-12 336-693-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BURLINGTON NC
2011-01-12 336-693-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BURLINGTON NC
2011-01-12 336-944-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2011-01-10 336-346-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2011-01-10 336-615-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2011-01-10 336-615-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2011-01-10 336-615-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2011-01-10 336-615-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2011-01-10 336-809-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2011-01-10 336-809-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2011-01-10 336-907-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2011-01-07 336-528-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2010-12-16 336-440-0XXX 0000–0999Assigned BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 BURLINGTON NC
2010-12-16 336-440-1XXX 1000–1999Assigned BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 BURLINGTON NC
2010-12-16 336-440-2XXX 2000–2999Assigned BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 BURLINGTON NC
2010-12-16 336-440-3XXX 3000–3999Assigned BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 BURLINGTON NC
2010-12-16 336-440-4XXX 4000–4999Assigned BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 BURLINGTON NC
2010-12-16 336-440-5XXX 5000–5999Assigned BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 BURLINGTON NC
2010-12-16 336-440-6XXX 6000–6999Assigned BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 BURLINGTON NC
2010-12-16 336-440-7XXX 7000–7999Assigned BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 BURLINGTON NC
2010-12-16 336-440-8XXX 8000–8999Assigned BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 BURLINGTON NC
2010-12-16 336-440-9XXX 9000–9999Assigned BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 BURLINGTON NC
2010-12-13 336-892-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E JULIAN NC
2010-12-09 336-520-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 REIDSVILLE NC
2010-12-08 336-615-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2010-12-08 336-615-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2010-12-08 336-615-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2010-12-08 336-615-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2010-12-03 336-546-8XXX 8000–8999Assigned ONVOY, LLC - NC 638E WINSTN SAL NC
2010-12-03 336-546-9XXX 9000–9999Assigned ONVOY, LLC - NC 638E WINSTN SAL NC
2010-11-24 336-543-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 GREENSBORO NC
2010-11-17 336-554-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 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.