NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

6 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 864
BANDWIDTH.COM CLEC, LLC - SC 2
SUNCOM DBA T-MOBILE USA 1
NEW CINGULAR WIRELESS PCS, LLC - GA 1
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 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
2020-06-18 864-566-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 GREENVILLE SC
2020-06-18 864-572-6XXX 6000–6999Assigned ONVOY, LLC - SC 548E SPARTANBG SC
2020-06-18 864-572-7XXX 7000–7999Assigned ONVOY, LLC - SC 548E SPARTANBG SC
2020-06-18 864-581-2XXX 2000–2999Assigned ONVOY, LLC - SC 548E ANDERSON SC
2020-06-18 864-581-3XXX 3000–3999Assigned ONVOY, LLC - SC 548E ANDERSON SC
2020-06-18 864-613-6XXX 6000–6999Assigned ONVOY, LLC - SC 548E WESTMINSTR SC
2020-06-18 864-660-0XXX 0000–0999Assigned ONVOY, LLC - SC 548E TRAVESREST SC
2020-06-18 864-660-7XXX 7000–7999Assigned ONVOY, LLC - SC 548E TRAVESREST SC
2020-06-18 864-661-5XXX 5000–5999Assigned ONVOY, LLC - SC 548E LYMAN SC
2020-06-18 864-661-6XXX 6000–6999Assigned ONVOY, LLC - SC 548E LYMAN SC
2020-06-18 864-666-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 GREENVILLE SC
2020-06-18 864-668-2XXX 2000–2999Assigned ONVOY, LLC - SC 548E PICKENS SC
2020-06-18 864-668-3XXX 3000–3999Assigned ONVOY, LLC - SC 548E PICKENS SC
2020-06-18 864-724-6XXX 6000–6999Assigned ONVOY, LLC - SC 548E FOUNTANINN SC
2020-06-18 864-732-4XXX 4000–4999Assigned ONVOY, LLC - SC 548E SALEM SC
2020-06-18 864-732-6XXX 6000–6999Assigned ONVOY, LLC - SC 548E SALEM SC
2020-06-18 864-734-4XXX 4000–4999Assigned ONVOY, LLC - SC 548E SIX MILE SC
2020-06-18 864-734-5XXX 5000–5999Assigned ONVOY, LLC - SC 548E SIX MILE SC
2020-06-18 864-740-3XXX 3000–3999Assigned ONVOY, LLC - SC 548E PIEDMONT SC
2020-06-18 864-740-4XXX 4000–4999Assigned ONVOY, LLC - SC 548E PIEDMONT SC
2020-06-18 864-756-3XXX 3000–3999Assigned ONVOY, LLC - SC 548E WOODRUFF SC
2020-06-18 864-756-4XXX 4000–4999Assigned ONVOY, LLC - SC 548E WOODRUFF SC
2020-06-18 864-774-9XXX 9000–9999Assigned ONVOY, LLC - SC 548E WILLIAMSTN SC
2020-06-18 864-778-2XXX 2000–2999Assigned ONVOY, LLC - SC 548E WALHALLA SC
2020-06-18 864-778-3XXX 3000–3999Assigned ONVOY, LLC - SC 548E WALHALLA SC
2020-06-18 864-788-3XXX 3000–3999Assigned ONVOY, LLC - SC 548E CENTRAL SC
2020-06-18 864-808-6XXX 6000–6999Assigned ONVOY, LLC - SC 548E CLINTON SC
2020-06-18 864-860-2XXX 2000–2999Assigned ONVOY, LLC - SC 548E BELTON SC
2020-06-18 864-860-3XXX 3000–3999Assigned ONVOY, LLC - SC 548E BELTON SC
2020-06-18 864-865-8XXX 8000–8999Assigned ONVOY, LLC - SC 548E CENTRAL SC
2020-06-17 864-584-9XXX 9000–9999Assigned HD CARRIER LLC 321J GREENVILLE SC
2020-06-03 864-867-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GREENVILLE SC
2020-06-03 864-867-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GREENVILLE SC
2020-06-03 864-867-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GREENVILLE SC
2020-06-01 864-341-0XXX 0000–0999Assigned ONVOY, LLC - SC 548E MOUNTVILLE SC
2020-06-01 864-405-4XXX 4000–4999Assigned ONVOY, LLC - SC 548E SALUDA SC
2020-06-01 864-618-6XXX 6000–6999Assigned ONVOY, LLC - SC 548E WARESHOALS SC
2020-06-01 864-755-7XXX 7000–7999Assigned ONVOY, LLC - SC 548E CHAPPELLS SC
2020-06-01 864-773-7XXX 7000–7999Assigned ONVOY, LLC - SC 548E TROY SC
2020-06-01 864-970-9XXX 9000–9999Assigned ONVOY, LLC - SC 548E NINETY SIX SC
2020-06-01 864-971-5XXX 5000–5999Assigned ONVOY, LLC - SC 548E HODGES SC
2020-06-01 864-998-8XXX 8000–8999Assigned ONVOY, LLC - SC 548E CROSS HILL SC
2020-05-21 864-566-1XXX 1000–1999Assigned METROPCS, INC. 5562 GREENVILLE SC
2020-05-21 864-566-2XXX 2000–2999Assigned METROPCS, INC. 5562 GREENVILLE SC
2020-05-19 864-319-4XXX 4000–4999Assigned ONVOY, LLC - SC 548E UNION SC
2020-05-19 864-319-5XXX 5000–5999Assigned ONVOY, LLC - SC 548E UNION SC
2020-05-19 864-319-6XXX 6000–6999Assigned ONVOY, LLC - SC 548E UNION SC
2020-05-19 864-403-3XXX 3000–3999Assigned ONVOY, LLC - SC 548E PENDLETON SC
2020-05-19 864-403-4XXX 4000–4999Assigned ONVOY, LLC - SC 548E PENDLETON SC
2020-05-19 864-453-4XXX 4000–4999Assigned ONVOY, LLC - SC 548E ABBEVILLE SC

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.