NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 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, all time — NPA 843
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 449
ONVOY, LLC - SC 446
NEW CINGULAR WIRELESS PCS, LLC - GA 361
BANDWIDTH.COM CLEC, LLC - SC 309
SUNCOM DBA T-MOBILE USA 268
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
2011-03-11 843-420-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 TIMMONSVL SC
2011-03-09 843-605-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 BEAUFORT SC
2011-03-03 843-765-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 MARION SC
2011-03-02 843-758-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 FLORENCE SC
2011-02-28 843-438-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 CONWAY SC
2011-02-28 843-536-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 FLORENCE SC
2011-02-28 843-605-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 BEAUFORT SC
2011-02-28 843-751-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHARLESTON SC
2011-02-24 843-564-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F HOLLYWOOD SC
2011-02-24 843-972-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA SC- LLC 635C MTPLEASANT SC
2011-02-23 843-619-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA SC- LLC 635C CHARLESTON SC
2011-02-18 843-410-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 CHARLESTON SC
2011-02-18 843-486-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 SUMMERVL SC
2011-02-17 843-295-5XXX 5000–5999Assigned POWERTEL ATLANTA LICENSES, INC. 7473 HILTONHEAD SC
2011-02-17 843-295-6XXX 6000–6999Assigned POWERTEL ATLANTA LICENSES, INC. 7473 HILTONHEAD SC
2011-02-16 843-471-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2011-02-16 843-471-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2011-02-16 843-471-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2011-02-16 843-471-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2011-02-16 843-471-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2011-02-16 843-471-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2011-02-16 843-471-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2011-02-16 843-480-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2011-02-16 843-480-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2011-02-16 843-480-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2011-02-16 843-732-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F SULLIVNSIS SC
2011-02-09 843-604-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C BLENHEIM SC
2011-02-04 843-540-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 BLUFFTON SC
2011-02-04 843-901-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2011-01-31 843-584-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 WALTERBORO SC
2011-01-31 843-901-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2011-01-31 843-901-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2011-01-31 843-901-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2011-01-21 843-715-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K HILTONHEAD SC
2011-01-10 843-353-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 MYRTLE BCH SC
2011-01-10 843-865-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 8534 CHERAW SC
2011-01-10 843-874-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 8534 MARION SC
2011-01-07 843-259-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2011-01-07 843-259-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2011-01-07 843-259-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2011-01-07 843-703-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHERAW SC
2011-01-07 843-826-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 MONCKS COR SC
2011-01-05 843-605-1XXX 1000–1999Assigned POWERTEL ATLANTA LICENSES, INC. 7473 BEAUFORT SC
2011-01-05 843-605-2XXX 2000–2999Assigned POWERTEL ATLANTA LICENSES, INC. 7473 BEAUFORT SC
2010-12-30 843-491-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 NMYRTLEBCH SC
2010-12-29 843-456-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 BENNETTSVL SC
2010-12-09 843-535-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 BENNETTSVL SC
2010-12-09 843-701-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 ST GEORGE SC
2010-11-24 843-900-3XXX 3000–3999Assigned BERKELEY CABLE TELEVISION INC DBA HOME TELECOM-SC 712C SUMMERVL SC
2010-11-18 843-410-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 CHARLESTON 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.