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
2018-06-26 336-539-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K BURLINGTON NC
2018-06-20 336-660-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GREENSBORO NC
2018-06-20 336-673-2XXX 2000–2999Assigned UNITED STATES CELLULAR - NC 6282 MOUNT AIRY NC
2018-06-20 336-894-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GREENSBORO NC
2018-06-14 336-331-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINSTN SAL NC
2018-06-14 336-666-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINSTN SAL NC
2018-06-14 336-955-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINSTN SAL NC
2018-06-14 336-955-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINSTN SAL NC
2018-06-12 336-639-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 BURLINGTON NC
2018-06-12 336-639-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 BURLINGTON NC
2018-06-08 336-390-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E TIMBERLAKE NC
2018-06-01 336-296-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K KING NC
2018-05-24 336-890-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 GREENSBORO NC
2018-05-18 336-604-6XXX 6000–6999Assigned ONVOY, LLC - NC 638E GREENSBORO NC
2018-05-18 336-666-2XXX 2000–2999Assigned ONVOY, LLC - NC 638E WINSTN SAL NC
2018-05-14 336-890-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 GREENSBORO NC
2018-05-14 336-890-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 GREENSBORO NC
2018-05-11 336-637-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K REIDSVILLE NC
2018-05-11 336-929-2XXX 2000–2999Assigned METROPCS, INC. 5562 ASHEBORO NC
2018-05-10 336-444-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 PILOT MT NC
2018-05-10 336-604-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2018-05-03 336-443-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E DOBSON NC
2018-05-03 336-536-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E WALNUTCOVE NC
2018-05-03 336-715-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E JULIAN NC
2018-05-03 336-864-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E EDEN NC
2018-05-02 336-642-8XXX 8000–8999Assigned RIVERSTREET COMMUNICATIONS OF NO CAROLINA - NC 769H RURAL HALL NC
2018-05-01 336-920-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E WALKERTOWN NC
2018-04-30 336-673-7XXX 7000–7999Assigned UNITED STATES CELLULAR - NC 6282 MOUNT AIRY NC
2018-04-23 336-551-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E BOONVILLE NC
2018-04-23 336-863-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E MULBERRY NC
2018-04-19 336-439-3XXX 3000–3999Assigned ONVOY, LLC - NC 638E ROXBORO NC
2018-04-17 336-390-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E TIMBERLAKE NC
2018-04-09 336-439-9XXX 9000–9999Assigned ONVOY, LLC - NC 638E ROXBORO NC
2018-04-09 336-683-2XXX 2000–2999Assigned ONVOY, LLC - NC 638E ASHEBORO NC
2018-04-03 336-843-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K LEXINGTON NC
2018-04-03 336-867-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K LEXINGTON NC
2018-03-21 336-515-6XXX 6000–6999Assigned ONVOY, LLC - NC 638E KERNERSVL NC
2018-03-20 336-807-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 HIGH POINT NC
2018-03-20 336-807-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 HIGH POINT NC
2018-03-20 336-807-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 HIGH POINT NC
2018-03-20 336-807-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 HIGH POINT NC
2018-03-20 336-807-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 HIGH POINT NC
2018-03-20 336-807-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 HIGH POINT NC
2018-03-09 336-867-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 LEXINGTON NC
2018-03-09 336-867-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 LEXINGTON NC
2018-03-09 336-960-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 LEXINGTON NC
2018-03-09 336-960-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 LEXINGTON NC
2018-03-09 336-960-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 LEXINGTON NC
2018-03-09 336-960-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 LEXINGTON NC
2018-03-08 336-523-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 ASHEBORO 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.