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
2017-01-10 336-538-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 BURLINGTON NC
2017-01-10 336-567-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 BURLINGTON NC
2017-01-09 336-807-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 HIGH POINT NC
2017-01-06 336-666-4XXX 4000–4999Assigned METROPCS, INC. 5562 WINSTN SAL NC
2016-12-30 336-920-1XXX 1000–1999Assigned METROPCS, INC. 5562 WALKERTOWN NC
2016-12-22 336-360-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 RAMSEUR NC
2016-12-14 336-539-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 BURLINGTON NC
2016-12-08 336-843-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 LEXINGTON NC
2016-12-06 336-200-5XXX 5000–5999Assigned UNITED STATES CELLULAR - NC 6282 ROARINGGAP NC
2016-12-06 336-200-6XXX 6000–6999Assigned UNITED STATES CELLULAR - NC 6282 ROARINGGAP NC
2016-12-06 336-673-8XXX 8000–8999Assigned UNITED STATES CELLULAR - NC 6282 MOUNT AIRY NC
2016-12-06 336-673-9XXX 9000–9999Assigned UNITED STATES CELLULAR - NC 6282 MOUNT AIRY NC
2016-12-06 336-840-1XXX 1000–1999Assigned TELNYX LLC 073H GREENSBORO NC
2016-11-28 336-515-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 KERNERSVL NC
2016-11-10 336-894-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GREENSBORO NC
2016-11-09 336-930-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K WINSTN SAL NC
2016-10-31 336-781-5XXX 5000–5999Assigned METROPCS, INC. 5562 HIGH POINT NC
2016-10-18 336-276-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2016-10-18 336-666-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2016-09-27 336-666-6XXX 6000–6999Assigned PEERLESS NETWORK OF NORTH CAROLINA, LLC - NC 350F WINSTN SAL NC
2016-09-21 336-223-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 BURLINGTON NC
2016-09-21 336-579-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GREENSBORO NC
2016-09-21 336-690-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GREENSBORO NC
2016-09-14 336-396-2XXX 2000–2999Assigned ONVOY, LLC - NC 638E RUFFIN NC
2016-09-06 336-515-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K KERNERSVL NC
2016-09-06 336-579-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K GREENSBORO NC
2016-09-06 336-579-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K GREENSBORO NC
2016-08-23 336-467-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 BROOKS NC
2016-08-23 336-715-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E JULIAN NC
2016-08-23 336-901-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GIBSONVL NC
2016-08-18 336-502-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 HAYS NC
2016-08-05 336-515-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K KERNERSVL NC
2016-07-22 336-739-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E SAXAPAHAW NC
2016-07-20 336-660-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2016-07-20 336-660-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2016-07-20 336-660-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2016-07-20 336-660-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2016-07-20 336-660-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2016-07-06 336-396-0XXX 0000–0999Assigned ONVOY, LLC - NC 638E RUFFIN NC
2016-07-06 336-396-1XXX 1000–1999Assigned ONVOY, LLC - NC 638E RUFFIN NC
2016-07-01 336-221-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 BURLINGTON NC
2016-07-01 336-579-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GREENSBORO NC
2016-07-01 336-579-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GREENSBORO NC
2016-06-30 336-865-8XXX 8000–8999Assigned PIEDMONT COMMUNICATIONS SERVICES, INC. - NC 035B WINSTN SAL NC
2016-06-29 336-843-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K LEXINGTON NC
2016-06-23 336-807-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K HIGH POINT NC
2016-06-22 336-660-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 GREENSBORO NC
2016-06-22 336-717-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E STONEVILLE NC
2016-06-21 336-791-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E REIDSVILLE NC
2016-06-21 336-807-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 HIGH POINT 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.