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
2010-11-18 843-410-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 CHARLESTON SC
2010-11-17 843-487-1XXX 1000–1999Assigned BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 DILLON SC
2010-11-10 843-599-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 WALTERBORO SC
2010-10-29 843-315-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J MYRTLE BCH SC
2010-10-29 843-603-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F EDISTO IS SC
2010-10-22 843-934-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONCKS COR SC
2010-10-22 843-934-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONCKS COR SC
2010-10-22 843-934-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONCKS COR SC
2010-10-18 843-405-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2010-10-18 843-405-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2010-10-18 843-471-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2010-10-18 843-636-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F ST GEORGE SC
2010-10-18 843-694-6XXX 6000–6999Assigned POWERTEL ATLANTA LICENSES, INC. 7473 BEAUFORT SC
2010-10-14 843-771-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K SUMMERVL SC
2010-10-06 843-540-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 BLUFFTON SC
2010-10-01 843-639-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J HARTSVILLE SC
2010-09-16 843-517-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 PAGELAND SC
2010-09-10 843-480-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2010-09-10 843-480-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2010-09-10 843-480-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2010-09-09 843-473-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F BEAUFORT SC
2010-09-03 843-331-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 EASTCONWAY SC
2010-09-02 843-405-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2010-08-27 843-419-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F SUMMERVL SC
2010-08-25 843-627-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 DILLON SC
2010-08-11 843-694-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 BEAUFORT SC
2010-08-10 843-405-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 288B CHARLESTON SC
2010-07-13 843-934-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 MONCKS COR SC
2010-07-12 843-606-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F MTPLEASANT SC
2010-07-09 843-605-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F BEAUFORT SC
2010-06-28 843-968-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K DARLINGTON SC
2010-06-22 843-473-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 BEAUFORT SC
2010-06-22 843-749-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 ST STEPHEN SC
2010-06-08 843-542-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 WALTERBORO SC
2010-06-07 843-654-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J MTPLEASANT SC
2010-06-04 843-703-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHERAW SC
2010-06-04 843-730-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2010-06-04 843-730-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2010-06-02 843-749-1XXX 1000–1999Assigned BERKELEY CABLE TELEVISION INC DBA HOME TELECOM-SC 712C ST STEPHEN SC
2010-05-27 843-353-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 MYRTLE BCH SC
2010-05-21 843-405-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2010-05-21 843-405-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2010-05-21 843-405-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2010-05-21 843-405-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2010-05-21 843-879-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F SUMMERVL SC
2010-05-13 843-256-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F ISLE PALMS SC
2010-05-04 843-360-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 MYRTLE BCH SC
2010-05-04 843-544-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 BENNETTSVL SC
2010-05-04 843-544-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 BENNETTSVL SC
2010-04-28 843-405-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J 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.