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
2005-12-27 843-530-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2005-12-27 843-530-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2005-12-27 843-530-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2005-12-16 843-727-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2005-12-16 843-818-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2005-12-13 843-323-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2005-12-13 843-408-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2005-12-08 843-253-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 CHERAW SC
2005-12-08 843-591-1XXX 1000–1999Assigned US LEC OF SOUTH CAROLINA, INC. 8693 EASTCONWAY SC
2005-12-07 843-453-2XXX 2000–2999Assigned METROPCS, INC. 5562 FLORENCE SC
2005-12-05 843-205-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 MYRTLE BCH SC
2005-11-21 843-213-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 8534 MYRTLE BCH SC
2005-11-15 843-494-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2005-11-10 843-352-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 MTPLEASANT SC
2005-11-10 843-375-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 MTPLEASANT SC
2005-11-03 843-475-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2005-11-03 843-475-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2005-11-01 843-486-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 288B SUMMERVL SC
2005-10-21 843-773-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 8534 FLORENCE SC
2005-10-21 843-773-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 8534 FLORENCE SC
2005-10-20 843-312-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 MONCKS COR SC
2005-10-19 843-323-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2005-10-18 843-486-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 288B SUMMERVL SC
2005-09-15 843-202-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2005-09-14 843-323-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2005-09-14 843-323-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2005-09-07 843-303-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2005-09-07 843-530-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2005-09-07 843-530-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2005-09-07 843-530-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2005-09-07 843-530-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2005-09-02 843-818-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 CHARLESTON SC
2005-09-01 843-504-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WMYRTLEBCH SC
2005-09-01 843-504-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WMYRTLEBCH SC
2005-09-01 843-504-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WMYRTLEBCH SC
2005-08-29 843-486-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 288B SUMMERVL SC
2005-08-26 843-409-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FLORENCE SC
2005-08-26 843-701-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 ST GEORGE SC
2005-08-26 843-743-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHARLESTON SC
2005-08-26 843-743-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHARLESTON SC
2005-08-26 843-743-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHARLESTON SC
2005-08-26 843-743-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHARLESTON SC
2005-08-26 843-743-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHARLESTON SC
2005-08-26 843-743-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHARLESTON SC
2005-08-26 843-743-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHARLESTON SC
2005-08-24 843-424-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 MYRTLE BCH SC
2005-08-24 843-424-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 MYRTLE BCH SC
2005-08-19 843-433-7XXX 7000–7999Assigned SOUTH CAROLINA NET, INC. - SC 1784 MARION SC
2005-08-11 843-323-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2005-08-11 843-323-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 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.