NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

7 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 803
NEW CINGULAR WIRELESS PCS, LLC - GA 4
HD CARRIER LLC 2
ONVOY, LLC - 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
2011-09-12 803-596-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 ORANGEBURG SC
2011-09-01 803-297-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 COLUMBIA SC
2011-08-29 803-458-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NO SUMTER SC
2011-08-26 803-525-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C MILL CREEK SC
2011-08-24 803-262-9XXX 9000–9999Assigned POWERTEL ATLANTA LICENSES, INC. 7473 AIKEN SC
2011-08-24 803-610-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 CLOVER SC
2011-08-19 803-857-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F SANTEE SC
2011-08-17 803-566-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F MANNING SC
2011-08-17 803-574-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F SUMMERTON SC
2011-08-12 803-550-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K COLUMBIA SC
2011-08-10 803-490-3XXX 3000–3999Assigned WINDSTREAM SOUTH CAROLINA, INC. 0517 LEXINGTON SC
2011-08-08 803-451-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K COLUMBIA SC
2011-08-08 803-667-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K COLUMBIA SC
2011-08-03 803-401-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C COLUMBIA SC
2011-07-29 803-299-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 8534 COLUMBIA SC
2011-07-29 803-299-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 8534 COLUMBIA SC
2011-07-29 803-299-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 8534 COLUMBIA SC
2011-07-29 803-299-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 8534 COLUMBIA SC
2011-07-29 803-299-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 8534 COLUMBIA SC
2011-07-29 803-299-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 8534 COLUMBIA SC
2011-07-29 803-299-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 8534 COLUMBIA SC
2011-07-29 803-299-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 8534 COLUMBIA SC
2011-07-29 803-299-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 8534 COLUMBIA SC
2011-07-29 803-299-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 8534 COLUMBIA SC
2011-07-27 803-792-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F YORK SC
2011-06-17 803-220-5XXX 5000–5999Assigned POWERTEL ATLANTA LICENSES, INC. 7473 AIKEN SC
2011-06-17 803-220-6XXX 6000–6999Assigned POWERTEL ATLANTA LICENSES, INC. 7473 AIKEN SC
2011-06-14 803-220-7XXX 7000–7999Assigned POWERTEL ATLANTA LICENSES, INC. 7473 AIKEN SC
2011-06-14 803-220-8XXX 8000–8999Assigned POWERTEL ATLANTA LICENSES, INC. 7473 AIKEN SC
2011-06-13 803-297-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 COLUMBIA SC
2011-06-13 803-297-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 COLUMBIA SC
2011-06-13 803-342-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LANCASTER SC
2011-06-08 803-220-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F AIKEN SC
2011-06-08 803-265-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F BEECH IS SC
2011-06-08 803-310-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F CAMDEN SC
2011-06-08 803-380-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F BATH SC
2011-06-08 803-395-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F ORANGEBURG SC
2011-06-08 803-599-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F NO AUGUSTA SC
2011-05-27 803-818-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 YORK SC
2011-05-26 803-619-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F LAKE WYLIE SC
2011-05-26 803-653-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F SRNGFLSLLY SC
2011-05-26 803-693-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F YORK SC
2011-05-12 803-728-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F COLUMBIA SC
2011-05-12 803-728-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F COLUMBIA SC
2011-05-12 803-728-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F COLUMBIA SC
2011-05-12 803-728-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F COLUMBIA SC
2011-05-12 803-728-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F COLUMBIA SC
2011-05-12 803-929-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - SC 077F COLUMBIA SC
2011-05-11 803-381-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 COLUMBIA SC
2011-05-10 803-571-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 BARNWELL 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.