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
2016-02-18 336-276-9XXX 9000–9999Assigned METROPCS, INC. 5562 WINSTN SAL NC
2016-02-18 336-398-0XXX 0000–0999Assigned METROPCS, INC. 5562 GREENSBORO NC
2016-02-18 336-455-5XXX 5000–5999Assigned METROPCS, INC. 5562 GREENSBORO NC
2016-02-18 336-605-8XXX 8000–8999Assigned METROPCS, INC. 5562 GREENSBORO NC
2016-02-18 336-639-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K BURLINGTON NC
2016-02-18 336-690-1XXX 1000–1999Assigned METROPCS, INC. 5562 GREENSBORO NC
2016-02-18 336-690-2XXX 2000–2999Assigned METROPCS, INC. 5562 GREENSBORO NC
2016-02-16 336-652-5XXX 5000–5999Assigned ONVOY, LLC - NC 638E KIMESVILLE NC
2016-02-16 336-652-6XXX 6000–6999Assigned ONVOY, LLC - NC 638E KIMESVILLE NC
2016-02-16 336-762-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K THOMASVL NC
2016-02-11 336-279-7XXX 7000–7999Assigned NORTH STATE COMMUNICATIONS ADVANCED SVCS, LLC-NC 361F GREENSBORO NC
2016-02-11 336-715-2XXX 2000–2999Assigned ONVOY, LLC - NC 638E JULIAN NC
2016-02-11 336-715-4XXX 4000–4999Assigned ONVOY, LLC - NC 638E JULIAN NC
2016-02-10 336-739-5XXX 5000–5999Assigned ONVOY, LLC - NC 638E SAXAPAHAW NC
2016-02-10 336-739-6XXX 6000–6999Assigned ONVOY, LLC - NC 638E SAXAPAHAW NC
2016-02-02 336-673-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 MOUNT AIRY NC
2016-01-29 336-560-8XXX 8000–8999Assigned ONVOY, LLC - NC 638E SUMMERFLD NC
2016-01-29 336-560-9XXX 9000–9999Assigned ONVOY, LLC - NC 638E SUMMERFLD NC
2016-01-28 336-344-7XXX 7000–7999Assigned ONVOY, LLC - NC 638E REIDSVILLE NC
2016-01-28 336-344-9XXX 9000–9999Assigned ONVOY, LLC - NC 638E REIDSVILLE NC
2016-01-27 336-891-4XXX 4000–4999Assigned ONVOY, LLC - NC 638E RUFFIN NC
2016-01-27 336-891-9XXX 9000–9999Assigned ONVOY, LLC - NC 638E RUFFIN NC
2016-01-26 336-585-7XXX 7000–7999Assigned ONVOY, LLC - NC 638E BURLINGTON NC
2016-01-26 336-585-8XXX 8000–8999Assigned ONVOY, LLC - NC 638E BURLINGTON NC
2016-01-25 336-560-5XXX 5000–5999Assigned ONVOY, LLC - NC 638E SUMMERFLD NC
2016-01-25 336-690-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 GREENSBORO NC
2016-01-25 336-791-1XXX 1000–1999Assigned ONVOY, LLC - NC 638E REIDSVILLE NC
2016-01-25 336-930-0XXX 0000–0999Assigned ONVOY, LLC - NC 638E WINSTN SAL NC
2016-01-20 336-585-6XXX 6000–6999Assigned ONVOY, LLC - NC 638E BURLINGTON NC
2016-01-12 336-781-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 HIGH POINT NC
2016-01-07 336-335-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GREENSBORO NC
2016-01-07 336-412-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GREENSBORO NC
2016-01-07 336-524-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 BURLINGTON NC
2016-01-06 336-395-5XXX 5000–5999Assigned ONVOY, LLC - NC 638E BURLINGTON NC
2016-01-05 336-276-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 WINSTN SAL NC
2016-01-05 336-276-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 WINSTN SAL NC
2016-01-05 336-276-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 WINSTN SAL NC
2016-01-05 336-955-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 WINSTN SAL NC
2016-01-05 336-999-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 WINSTN SAL NC
2015-12-30 336-466-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 BROOKS NC
2015-12-30 336-955-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 WINSTN SAL NC
2015-12-23 336-523-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 ASHEBORO NC
2015-12-14 336-990-9XXX 9000–9999Assigned WILKES COMMUNICATIONS, INC. - NC 795D NOWILKESBO NC
2015-12-11 336-664-8XXX 8000–8999Assigned ONVOY, LLC - NC 638E GREENSBORO NC
2015-12-11 336-697-6XXX 6000–6999Assigned ONVOY, LLC - NC 638E GREENSBORO NC
2015-12-09 336-335-8XXX 8000–8999Assigned METROPCS, INC. 5562 GREENSBORO NC
2015-12-09 336-954-8XXX 8000–8999Assigned METROPCS, INC. 5562 GREENSBORO NC
2015-12-07 336-276-0XXX 0000–0999Assigned ONVOY, LLC - NC 638E WINSTN SAL NC
2015-12-07 336-276-1XXX 1000–1999Assigned ONVOY, LLC - NC 638E WINSTN SAL NC
2015-12-07 336-276-2XXX 2000–2999Assigned ONVOY, LLC - NC 638E WINSTN SAL 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.