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
2015-02-19 336-523-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 ASHEBORO NC
2015-02-19 336-539-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E BURLINGTON NC
2015-02-19 336-539-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E BURLINGTON NC
2015-02-19 336-652-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E KIMESVILLE NC
2015-02-19 336-652-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E KIMESVILLE NC
2015-02-19 336-907-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2015-02-12 336-338-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GREENSBORO NC
2015-02-12 336-338-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GREENSBORO NC
2015-02-12 336-338-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GREENSBORO NC
2015-02-12 336-346-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GREENSBORO NC
2015-02-12 336-346-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GREENSBORO NC
2015-02-10 336-829-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINSTN SAL NC
2015-02-10 336-829-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINSTN SAL NC
2015-02-10 336-829-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINSTN SAL NC
2015-02-04 336-804-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 HIGH POINT NC
2015-02-02 336-436-9XXX 9000–9999Assigned PEERLESS NETWORK OF NORTH CAROLINA, LLC - NC 350F BURLINGTON NC
2015-01-30 336-313-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K THOMASVL NC
2015-01-29 336-818-8XXX 8000–8999Assigned PEERLESS NETWORK OF NORTH CAROLINA, LLC - NC 350F NOWILKESBO NC
2015-01-28 336-999-9XXX 9000–9999Assigned ONVOY, LLC - NC 638E WINSTN SAL NC
2015-01-27 336-439-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E ROXBORO NC
2015-01-27 336-754-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E WALKERTOWN NC
2015-01-23 336-895-0XXX 0000–0999Assigned ONVOY, LLC - NC 638E GREENSBORO NC
2015-01-22 336-344-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E REIDSVILLE NC
2015-01-20 336-814-3XXX 3000–3999Assigned NORTH STATE COMMUNICATIONS ADVANCED SVCS, LLC-NC 361F GREENSBORO NC
2015-01-13 336-986-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K WINSTN SAL NC
2015-01-08 336-705-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2015-01-08 336-747-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2015-01-08 336-750-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2014-12-29 336-703-9XXX 9000–9999Assigned PEERLESS NETWORK OF NORTH CAROLINA, LLC - NC 350F WINSTN SAL NC
2014-12-22 336-560-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E SUMMERFLD NC
2014-12-22 336-560-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E SUMMERFLD NC
2014-12-10 336-663-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K GREENSBORO NC
2014-12-10 336-663-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K GREENSBORO NC
2014-12-10 336-907-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K GREENSBORO NC
2014-12-08 336-897-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C GREENSBORO NC
2014-12-05 336-515-1XXX 1000–1999Assigned PEERLESS NETWORK OF NORTH CAROLINA, LLC - NC 350F KERNERSVL NC
2014-12-05 336-585-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 BURLINGTON NC
2014-11-25 336-803-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 HIGH POINT NC
2014-11-25 336-803-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 HIGH POINT NC
2014-11-24 336-663-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K GREENSBORO NC
2014-11-24 336-663-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K GREENSBORO NC
2014-11-17 336-907-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K GREENSBORO NC
2014-11-10 336-265-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2014-11-10 336-265-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2014-11-10 336-645-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2014-11-10 336-645-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2014-11-10 336-663-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2014-11-10 336-663-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2014-11-10 336-663-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2014-11-06 336-814-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 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.