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
2020-05-13 336-490-2XXX 2000–2999Assigned ONVOY, LLC - NC 638E DENTON NC
2020-05-13 336-490-5XXX 5000–5999Assigned ONVOY, LLC - NC 638E DENTON NC
2020-05-13 336-490-9XXX 9000–9999Assigned ONVOY, LLC - NC 638E DENTON NC
2020-05-13 336-502-5XXX 5000–5999Assigned ONVOY, LLC - NC 638E HAYS NC
2020-05-13 336-502-6XXX 6000–6999Assigned ONVOY, LLC - NC 638E HAYS NC
2020-05-13 336-502-7XXX 7000–7999Assigned ONVOY, LLC - NC 638E HAYS NC
2020-05-13 336-502-8XXX 8000–8999Assigned ONVOY, LLC - NC 638E HAYS NC
2020-05-13 336-559-3XXX 3000–3999Assigned ONVOY, LLC - NC 638E ELKIN NC
2020-05-13 336-559-4XXX 4000–4999Assigned ONVOY, LLC - NC 638E ELKIN NC
2020-05-13 336-569-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E DOBSON NC
2020-04-27 336-513-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 BURLINGTON NC
2020-04-27 336-513-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 BURLINGTON NC
2020-04-27 336-513-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 BURLINGTON NC
2020-04-21 336-502-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E HAYS NC
2020-03-30 336-761-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2020-03-30 336-777-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2020-03-30 336-779-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2020-03-30 336-779-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2020-03-30 336-779-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2020-03-30 336-780-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 LEXINGTON NC
2020-03-30 336-780-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 LEXINGTON NC
2020-03-30 336-780-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 LEXINGTON NC
2020-03-30 336-780-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 LEXINGTON NC
2020-03-17 336-513-8XXX 8000–8999Assigned PEERLESS NETWORK OF NORTH CAROLINA, LLC - NC 350F BURLINGTON NC
2020-03-06 336-909-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 ADVANCE NC
2020-02-26 336-748-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K WINSTN SAL NC
2020-02-25 336-477-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NC 3235 MOCKSVILLE NC
2020-02-19 336-748-7XXX 7000–7999Assigned PEERLESS NETWORK OF NORTH CAROLINA, LLC - NC 350F WINSTN SAL NC
2020-02-18 336-604-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GREENSBORO NC
2020-02-18 336-962-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GREENSBORO NC
2020-02-18 336-962-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GREENSBORO NC
2020-02-18 336-962-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 GREENSBORO NC
2020-02-13 336-728-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINSTN SAL NC
2020-02-06 336-412-8XXX 8000–8999Assigned METROPCS, INC. 5562 GREENSBORO NC
2020-02-06 336-412-9XXX 9000–9999Assigned METROPCS, INC. 5562 GREENSBORO NC
2020-02-04 336-350-6XXX 6000–6999Assigned METROPCS, INC. 5562 BURLINGTON NC
2020-01-31 336-962-2XXX 2000–2999Assigned ONVOY, LLC - NC 638E GREENSBORO NC
2020-01-31 336-962-6XXX 6000–6999Assigned ONVOY, LLC - NC 638E GREENSBORO NC
2020-01-25 336-218-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2020-01-25 336-218-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2020-01-25 336-271-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - NC 998E GREENSBORO NC
2020-01-15 336-488-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 BROOKS NC
2020-01-15 336-943-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 HIGH POINT NC
2020-01-15 336-947-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 HIGH POINT NC
2020-01-02 336-920-6XXX 6000–6999Assigned METROPCS, INC. 5562 WALKERTOWN NC
2019-12-12 336-335-4XXX 4000–4999Assigned METROPCS, INC. 5562 GREENSBORO NC
2019-12-12 336-892-3XXX 3000–3999Assigned TELNYX LLC 073H JULIAN NC
2019-12-11 336-990-5XXX 5000–5999Assigned WILKES COMMUNICATIONS, INC. - NC 795D NOWILKESBO NC
2019-11-27 336-332-9XXX 9000–9999Assigned METROPCS, INC. 5562 GREENSBORO NC
2019-11-19 336-968-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 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.