NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

7 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2005-03-16 803-705-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF SOUTH CAROLINA, LLC - SC 7273 COLUMBIA SC
2005-03-15 803-760-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 COLUMBIA SC
2005-03-15 803-760-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 COLUMBIA SC
2005-03-11 803-234-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 8534 COLUMBIA SC
2005-03-11 803-234-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 8534 COLUMBIA SC
2005-03-08 803-753-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 COLUMBIA SC
2005-03-08 803-753-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 COLUMBIA SC
2005-03-08 803-753-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 COLUMBIA SC
2005-02-22 803-795-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SUMTER SC
2005-02-22 803-795-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SUMTER SC
2005-02-22 803-795-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SUMTER SC
2005-02-17 803-295-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 AIKEN SC
2005-02-17 803-727-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 COLUMBIA SC
2005-02-17 803-760-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 COLUMBIA SC
2005-02-17 803-760-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 COLUMBIA SC
2005-02-11 803-231-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 COLUMBIA SC
2005-02-07 803-267-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 EHRHARDT SC
2005-02-07 803-350-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 EASTOVER SC
2005-02-07 803-368-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 OLAR SC
2005-02-07 803-485-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 SUMMERTON SC
2005-02-07 803-588-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 BISHOPVL SC
2005-02-07 803-589-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 WINNSBORO SC
2005-02-07 803-632-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 FAIRFAX SC
2005-02-07 803-666-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 SHAWAFBHTS SC
2005-02-07 803-696-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 MANNING SC
2005-02-07 803-829-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 BOWMAN SC
2005-02-07 803-854-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 SANTEE SC
2005-02-07 803-897-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 ELLOREE SC
2005-02-04 803-792-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 YORK SC
2005-02-02 803-393-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 JACKSON SC
2005-02-02 803-705-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF SOUTH CAROLINA, LLC - SC 7273 COLUMBIA SC
2005-02-02 803-705-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF SOUTH CAROLINA, LLC - SC 7273 COLUMBIA SC
2005-01-20 803-518-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 COLUMBIA SC
2005-01-13 803-528-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 COLUMBIA SC
2005-01-11 803-334-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JOHNSTON SC
2005-01-11 803-336-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 EDGEFIELD SC
2005-01-11 803-443-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEWELLENTN SC
2005-01-06 803-257-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NO AUGUSTA SC
2005-01-06 803-257-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NO AUGUSTA SC
2005-01-06 803-257-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NO AUGUSTA SC
2004-12-29 803-335-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 AIKEN SC
2004-12-29 803-349-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 NO AUGUSTA SC
2004-12-29 803-380-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 BATH SC
2004-12-14 803-528-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 COLUMBIA SC
2004-12-14 803-528-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 COLUMBIA SC
2004-12-10 803-753-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF SOUTH CAROLINA, LLC - SC 7273 COLUMBIA SC
2004-11-24 803-675-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 CLOVER SC
2004-11-19 803-389-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 ROCK HILL SC
2004-11-19 803-389-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 ROCK HILL SC
2004-11-18 803-518-8XXX 8000–8999Assigned METROPCS, INC. 5562 COLUMBIA SC

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.