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
2013-09-30 864-401-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 ANDERSON SC
2013-09-30 864-401-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 ANDERSON SC
2013-09-30 864-401-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 ANDERSON SC
2013-09-25 864-412-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 GREENVILLE SC
2013-09-18 864-310-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 SPARTANBG SC
2013-09-18 864-310-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 SPARTANBG SC
2013-09-11 864-603-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 8534 GREENVILLE SC
2013-09-06 864-516-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENVILLE SC
2013-09-06 864-516-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENVILLE SC
2013-09-06 864-603-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENVILLE SC
2013-09-06 864-603-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENVILLE SC
2013-09-06 864-603-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 GREENVILLE SC
2013-09-05 864-321-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 GREENWOOD SC
2013-08-26 864-310-4XXX 4000–4999Assigned CHARTER IP ENABLED SERVICES, LLC 792K SPARTANBG SC
2013-08-26 864-401-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ANDERSON SC
2013-08-16 864-516-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 GREENVILLE SC
2013-08-15 864-516-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J GREENVILLE SC
2013-08-14 864-310-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SPARTANBG SC
2013-08-14 864-310-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SPARTANBG SC
2013-08-14 864-310-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SPARTANBG SC
2013-08-14 864-516-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 GREENVILLE SC
2013-08-14 864-516-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 GREENVILLE SC
2013-08-14 864-516-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 GREENVILLE SC
2013-08-14 864-516-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 GREENVILLE SC
2013-08-05 864-603-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K GREENVILLE SC
2013-08-05 864-603-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K GREENVILLE SC
2013-07-30 864-558-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K GREENVILLE SC
2013-07-09 864-613-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 8534 WESTMINSTR SC
2013-07-08 864-393-1XXX 1000–1999Assigned PRTCOMMUNICATIONS, LLC - SC 1701 CROSS HILL SC
2013-06-19 864-501-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F GREENVILLE SC
2013-06-19 864-520-5XXX 5000–5999Assigned ONVOY, LLC - SC 548E GREENVILLE SC
2013-06-18 864-310-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J SPARTANBG SC
2013-06-13 864-321-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 GREENWOOD SC
2013-06-07 864-625-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PIEDMONT SC
2013-06-05 864-324-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 SENECA SC
2013-05-24 864-559-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 ANDERSON SC
2013-05-23 864-766-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA SC- LLC 635C LAURENS SC
2013-05-22 864-358-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA SC- LLC 635C CLINTON SC
2013-05-22 864-520-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K GREENVILLE SC
2013-05-22 864-832-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J PIEDMONT SC
2013-05-21 864-372-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F LIBERTY SC
2013-05-21 864-663-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F BLUE RIDGE SC
2013-05-16 864-210-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F HONEA PATH SC
2013-05-15 864-392-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA SC- LLC 635C BELTON SC
2013-05-15 864-534-1XXX 1000–1999Assigned AT&T ENTERPRISES, LLC 516C GREENVILLE SC
2013-05-15 864-601-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA SC- LLC 635C FOUNTANINN SC
2013-05-15 864-708-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA SC- LLC 635C INMAN SC
2013-05-13 864-309-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ANDERSON SC
2013-05-13 864-309-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ANDERSON SC
2013-05-13 864-359-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ANDERSON 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.