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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2015-12-04 336-709-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GREENSBORO NC
2015-12-04 336-907-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GREENSBORO NC
2015-11-25 336-398-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 GREENSBORO NC
2015-11-24 336-955-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K WINSTN SAL NC
2015-11-24 336-955-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K WINSTN SAL NC
2015-11-24 336-955-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K WINSTN SAL NC
2015-11-23 336-203-0XXX 0000–0999Assigned ONVOY, LLC - NC 638E GREENSBORO NC
2015-11-23 336-203-1XXX 1000–1999Assigned ONVOY, LLC - NC 638E GREENSBORO NC
2015-11-23 336-203-2XXX 2000–2999Assigned ONVOY, LLC - NC 638E GREENSBORO NC
2015-11-23 336-203-3XXX 3000–3999Assigned ONVOY, LLC - NC 638E GREENSBORO NC
2015-11-23 336-203-4XXX 4000–4999Assigned ONVOY, LLC - NC 638E GREENSBORO NC
2015-11-23 336-203-5XXX 5000–5999Assigned ONVOY, LLC - NC 638E GREENSBORO NC
2015-11-23 336-203-6XXX 6000–6999Assigned ONVOY, LLC - NC 638E GREENSBORO NC
2015-11-23 336-203-7XXX 7000–7999Assigned ONVOY, LLC - NC 638E GREENSBORO NC
2015-11-23 336-203-8XXX 8000–8999Assigned ONVOY, LLC - NC 638E GREENSBORO NC
2015-11-23 336-203-9XXX 9000–9999Assigned ONVOY, LLC - NC 638E GREENSBORO NC
2015-11-23 336-781-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K HIGH POINT NC
2015-11-17 336-515-5XXX 5000–5999Assigned BRIGHTSPEED OF EASTERN NORTH CAROLINA, LLC 0470 KERNERSVL NC
2015-11-17 336-799-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 RANDLEMAN NC
2015-11-16 336-350-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K BURLINGTON NC
2015-11-12 336-955-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 WINSTN SAL NC
2015-11-06 336-567-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 BURLINGTON NC
2015-11-06 336-865-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 WINSTN SAL NC
2015-11-02 336-709-2XXX 2000–2999Assigned METROPCS, INC. 5562 GREENSBORO NC
2015-11-02 336-709-4XXX 4000–4999Assigned METROPCS, INC. 5562 GREENSBORO NC
2015-11-02 336-814-1XXX 1000–1999Assigned METROPCS, INC. 5562 GREENSBORO NC
2015-11-02 336-865-4XXX 4000–4999Assigned METROPCS, INC. 5562 WINSTN SAL NC
2015-11-02 336-865-5XXX 5000–5999Assigned METROPCS, INC. 5562 WINSTN SAL NC
2015-11-02 336-865-6XXX 6000–6999Assigned METROPCS, INC. 5562 WINSTN SAL NC
2015-10-30 336-781-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 HIGH POINT NC
2015-10-30 336-781-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 HIGH POINT NC
2015-10-23 336-444-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 PILOT MT NC
2015-10-15 336-443-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E DOBSON NC
2015-10-14 336-474-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 THOMASVL NC
2015-10-14 336-673-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E MOUNT AIRY NC
2015-10-13 336-865-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2015-10-13 336-865-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2015-10-13 336-865-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2015-10-13 336-865-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2015-10-13 336-865-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2015-10-07 336-842-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 WINSTN SAL NC
2015-10-06 336-897-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GREENSBORO NC
2015-09-22 336-933-8XXX 8000–8999Assigned PEERLESS NETWORK OF NORTH CAROLINA, LLC - NC 350F YANCEYVL NC
2015-09-11 336-291-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K GREENSBORO NC
2015-09-11 336-542-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K GREENSBORO NC
2015-09-11 336-808-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K GREENSBORO NC
2015-09-11 336-842-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K WINSTN SAL NC
2015-09-11 336-895-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K GREENSBORO NC
2015-09-03 336-279-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GREENSBORO NC
2015-09-03 336-279-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 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.