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
2011-06-22 843-536-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 FLORENCE SC
2011-06-22 843-536-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 FLORENCE SC
2011-06-08 843-284-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F MTPLEASANT SC
2011-06-08 843-321-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F BEAUFORT SC
2011-06-08 843-636-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F ST GEORGE SC
2011-06-08 843-695-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F SUMMERVL SC
2011-06-08 843-695-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F SUMMERVL SC
2011-05-27 843-901-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2011-05-27 843-901-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2011-05-19 843-619-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2011-05-19 843-619-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2011-05-19 843-619-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2011-05-19 843-619-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2011-05-12 843-410-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2011-05-12 843-410-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2011-05-12 843-410-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CHARLESTON SC
2011-05-12 843-580-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F FOLLYBEACH SC
2011-05-12 843-605-5XXX 5000–5999Assigned POWERTEL ATLANTA LICENSES, INC. 7473 BEAUFORT SC
2011-05-12 843-654-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F MTPLEASANT SC
2011-05-10 843-337-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHESTERFLD SC
2011-05-10 843-410-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 CHARLESTON SC
2011-05-10 843-715-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 HILTONHEAD SC
2011-05-05 843-517-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 PAGELAND SC
2011-05-05 843-898-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 WALTERBORO SC
2011-04-27 843-456-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C BENNETTSVL SC
2011-04-27 843-472-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C FLORENCE SC
2011-04-27 843-713-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 FLORENCE SC
2011-04-27 843-713-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 FLORENCE SC
2011-04-27 843-713-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 FLORENCE SC
2011-04-27 843-944-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C DARLINGTON SC
2011-04-20 843-309-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HARTSVILLE SC
2011-04-20 843-309-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HARTSVILLE SC
2011-04-20 843-314-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K PAWLEYS IS SC
2011-04-20 843-407-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K FLORENCE SC
2011-04-20 843-487-2XXX 2000–2999Assigned BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 DILLON SC
2011-04-20 843-796-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K WMYRTLEBCH SC
2011-04-20 843-879-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K SUMMERVL SC
2011-04-18 843-608-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K CHARLESTON SC
2011-03-15 843-295-3XXX 3000–3999Assigned POWERTEL ATLANTA LICENSES, INC. 7473 HILTONHEAD SC
2011-03-15 843-318-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 GEORGETOWN SC
2011-03-15 843-318-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 GEORGETOWN SC
2011-03-15 843-318-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 GEORGETOWN SC
2011-03-15 843-318-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 GEORGETOWN SC
2011-03-15 843-492-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 MYRTLE BCH SC
2011-03-15 843-492-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 MYRTLE BCH SC
2011-03-15 843-751-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2011-03-15 843-751-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2011-03-15 843-751-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2011-03-15 843-751-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2011-03-15 843-751-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 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.