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
2019-04-22 336-490-4XXX 4000–4999Assigned ONVOY, LLC - NC 638E DENTON NC
2019-04-22 336-537-5XXX 5000–5999Assigned ONVOY, LLC - NC 638E SOUTHMONT NC
2019-04-22 336-619-2XXX 2000–2999Assigned ONVOY, LLC - NC 638E WELCOME NC
2019-04-18 336-609-8XXX 8000–8999Assigned ONVOY, LLC - NC 638E GREENSBORO NC
2019-04-10 336-619-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 WELCOME NC
2019-03-26 336-951-8XXX 8000–8999Assigned TELNYX LLC 073H REIDSVILLE NC
2019-03-19 336-300-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 LEXINGTON NC
2019-03-19 336-425-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 LEXINGTON NC
2019-03-19 336-479-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 LEXINGTON NC
2019-03-19 336-867-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 LEXINGTON NC
2019-03-19 336-867-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 LEXINGTON NC
2019-03-19 336-867-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 LEXINGTON NC
2019-03-07 336-221-6XXX 6000–6999Assigned METROPCS, INC. 5562 BURLINGTON NC
2019-03-07 336-396-5XXX 5000–5999Assigned ONVOY, LLC - NC 638E RUFFIN NC
2019-03-07 336-396-9XXX 9000–9999Assigned ONVOY, LLC - NC 638E RUFFIN NC
2019-03-07 336-438-2XXX 2000–2999Assigned ONVOY, LLC - NC 638E BURLINGTON NC
2019-03-07 336-438-8XXX 8000–8999Assigned ONVOY, LLC - NC 638E BURLINGTON NC
2019-03-07 336-523-0XXX 0000–0999Assigned ONVOY, LLC - NC 638E ASHEBORO NC
2019-03-07 336-647-0XXX 0000–0999Assigned ONVOY, LLC - NC 638E ROXBORO NC
2019-03-07 336-647-1XXX 1000–1999Assigned ONVOY, LLC - NC 638E ROXBORO NC
2019-03-07 336-742-0XXX 0000–0999Assigned ONVOY, LLC - NC 638E ANDERSON NC
2019-03-07 336-742-1XXX 1000–1999Assigned ONVOY, LLC - NC 638E ANDERSON NC
2019-03-07 336-762-3XXX 3000–3999Assigned METROPCS, INC. 5562 THOMASVL NC
2019-03-07 336-791-8XXX 8000–8999Assigned ONVOY, LLC - NC 638E REIDSVILLE NC
2019-03-07 336-800-2XXX 2000–2999Assigned ONVOY, LLC - NC 638E QUAKER GAP NC
2019-03-07 336-800-3XXX 3000–3999Assigned ONVOY, LLC - NC 638E QUAKER GAP NC
2019-03-07 336-850-6XXX 6000–6999Assigned ONVOY, LLC - NC 638E MONTICELLO NC
2019-03-07 336-850-9XXX 9000–9999Assigned ONVOY, LLC - NC 638E MONTICELLO NC
2019-03-07 336-892-8XXX 8000–8999Assigned ONVOY, LLC - NC 638E JULIAN NC
2019-03-07 336-892-9XXX 9000–9999Assigned ONVOY, LLC - NC 638E JULIAN NC
2019-03-07 336-932-8XXX 8000–8999Assigned ONVOY, LLC - NC 638E REIDSVILLE NC
2019-03-06 336-234-1XXX 1000–1999Assigned ONVOY, LLC - NC 638E MILTON NC
2019-03-06 336-360-0XXX 0000–0999Assigned ONVOY, LLC - NC 638E RAMSEUR NC
2019-03-06 336-360-8XXX 8000–8999Assigned ONVOY, LLC - NC 638E RAMSEUR NC
2019-03-06 336-443-8XXX 8000–8999Assigned ONVOY, LLC - NC 638E DOBSON NC
2019-03-06 336-489-8XXX 8000–8999Assigned ONVOY, LLC - NC 638E WJEFFERSON NC
2019-03-06 336-489-9XXX 9000–9999Assigned ONVOY, LLC - NC 638E WJEFFERSON NC
2019-03-06 336-502-0XXX 0000–0999Assigned ONVOY, LLC - NC 638E HAYS NC
2019-03-06 336-502-1XXX 1000–1999Assigned ONVOY, LLC - NC 638E HAYS NC
2019-03-06 336-518-8XXX 8000–8999Assigned ONVOY, LLC - NC 638E YADKINVL NC
2019-03-06 336-518-9XXX 9000–9999Assigned ONVOY, LLC - NC 638E YADKINVL NC
2019-03-06 336-530-1XXX 1000–1999Assigned ONVOY, LLC - NC 638E ELKIN NC
2019-03-06 336-530-8XXX 8000–8999Assigned ONVOY, LLC - NC 638E ELKIN NC
2019-03-06 336-536-6XXX 6000–6999Assigned ONVOY, LLC - NC 638E WALNUTCOVE NC
2019-03-06 336-551-8XXX 8000–8999Assigned ONVOY, LLC - NC 638E BOONVILLE NC
2019-03-06 336-551-9XXX 9000–9999Assigned ONVOY, LLC - NC 638E BOONVILLE NC
2019-03-06 336-568-0XXX 0000–0999Assigned ONVOY, LLC - NC 638E NOWILKESBO NC
2019-03-06 336-568-8XXX 8000–8999Assigned ONVOY, LLC - NC 638E NOWILKESBO NC
2019-03-06 336-593-7XXX 7000–7999Assigned ONVOY, LLC - NC 638E DANBURY NC
2019-03-06 336-606-3XXX 3000–3999Assigned ONVOY, LLC - NC 638E SANDYRIDGE 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.