NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 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, all time — NPA 803
LEVEL 3 COMMUNICATIONS, LLC - SC 186
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
2024-06-12 803-449-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 GILBERT SC
2024-06-12 803-559-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 WAGENER SC
2024-06-12 803-583-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 PELION SC
2024-06-12 803-838-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 RIDGE SPG SC
2024-06-12 803-858-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 PONDBRANCH SC
2024-03-18 803-248-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 KERSHAW SC
2024-03-04 803-852-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 SWANSEA SC
2023-02-09 803-916-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 BRANCHVL SC
2022-02-24 803-921-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 EUTAWVILLE SC
2021-10-19 803-294-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 STATEBURG SC
2021-10-13 803-970-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 ROCK HILL SC
2021-05-20 803-651-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 NO SUMTER SC
2021-03-23 803-745-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 LANCASTER SC
2020-10-19 803-882-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 PROSPERITY SC
2020-08-19 803-456-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 STMATTHEWS SC
2020-07-14 803-650-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 FORT MILL SC
2020-02-11 803-756-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 LEXINGTON SC
2019-10-23 803-650-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 FORT MILL SC
2019-04-11 803-440-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 COLUMBIA SC
2019-02-27 803-659-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 ROCK HILL SC
2018-11-20 803-650-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 FORT MILL SC
2018-09-19 803-683-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 COLUMBIA SC
2017-12-19 803-650-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 FORT MILL SC
2017-10-13 803-697-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 CHESTER SC
2017-08-30 803-766-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 COLUMBIA SC
2017-08-28 803-992-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 ROCK HILL SC
2017-03-21 803-756-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 LEXINGTON SC
2017-02-15 803-849-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 COLUMBIA SC
2016-06-29 803-228-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 FORT MILL SC
2015-06-23 803-828-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 COLUMBIA SC
2015-06-18 803-828-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 COLUMBIA SC
2015-06-18 803-828-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 COLUMBIA SC
2015-04-22 803-823-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 CAMERON SC
2015-04-08 803-312-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 COLUMBIA SC
2015-04-08 803-638-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 COLUMBIA SC
2015-04-08 803-726-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 COLUMBIA SC
2015-04-08 803-832-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 COLUMBIA SC
2015-04-08 803-832-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 COLUMBIA SC
2015-04-08 803-832-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 COLUMBIA SC
2015-04-01 803-490-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 LEXINGTON SC
2014-08-12 803-971-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 HOLLY HILL SC
2014-05-07 803-305-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 SUMTER SC
2014-01-14 803-602-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 COLUMBIA SC
2013-12-13 803-368-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 OLAR SC
2013-12-13 803-632-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 FAIRFAX SC
2013-12-13 803-824-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 EHRHARDT SC
2013-12-13 803-829-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 BOWMAN SC
2013-12-13 803-857-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 SANTEE SC
2013-12-13 803-897-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 ELLOREE SC
2013-12-04 803-384-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - SC 5258 EDGEFIELD 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.