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 318
CSC VOICE, LLC 81
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
2024-03-13 318-818-3XXX 3000–3999Assigned CSC VOICE, LLC 612K NEWELLTON LA
2024-02-26 318-604-8XXX 8000–8999Assigned CSC VOICE, LLC 612K COTTONPORT LA
2024-02-26 318-739-1XXX 1000–1999Assigned CSC VOICE, LLC 612K MANSURA LA
2024-02-26 318-783-3XXX 3000–3999Assigned CSC VOICE, LLC 612K BORDELONVL LA
2024-02-26 318-850-2XXX 2000–2999Assigned CSC VOICE, LLC 612K PLAUCHEVL LA
2024-02-14 318-873-1XXX 1000–1999Assigned CSC VOICE, LLC 612K ST JOSEPH LA
2024-02-12 318-563-2XXX 2000–2999Assigned CSC VOICE, LLC 612K MARKSVILLE LA
2024-02-12 318-786-9XXX 9000–9999Assigned CSC VOICE, LLC 612K BUNKIE LA
2024-02-12 318-831-8XXX 8000–8999Assigned CSC VOICE, LLC 612K ST LANDRY LA
2024-02-12 318-928-1XXX 1000–1999Assigned CSC VOICE, LLC 612K LECOMPTE LA
2024-02-12 318-937-2XXX 2000–2999Assigned CSC VOICE, LLC 612K GLENMORA LA
2022-03-14 318-819-2XXX 2000–2999Assigned CSC VOICE, LLC 612K JONESBORO LA
2022-03-11 318-395-1XXX 1000–1999Assigned CSC VOICE, LLC 612K JONESBORO LA
2022-02-15 318-743-2XXX 2000–2999Assigned CSC VOICE, LLC 612K DOYLINE LA
2022-02-15 318-806-4XXX 4000–4999Assigned CSC VOICE, LLC 612K RINGGOLD LA
2021-12-03 318-785-6XXX 6000–6999Assigned CSC VOICE, LLC 612K MOREAUVL LA
2019-10-03 318-695-6XXX 6000–6999Assigned CSC VOICE, LLC 612K CHOUDRANT LA
2019-09-30 318-579-2XXX 2000–2999Assigned CSC VOICE, LLC 612K ARCADIA LA
2014-07-30 318-704-0XXX 0000–0999Assigned CSC VOICE, LLC 612K ALEXANDRIA LA
2014-06-23 318-615-6XXX 6000–6999Assigned CSC VOICE, LLC 612K HAUGHTON LA
2014-03-20 318-584-6XXX 6000–6999Assigned CSC VOICE, LLC 612K SHREVEPORT LA
2014-03-20 318-584-7XXX 7000–7999Assigned CSC VOICE, LLC 612K SHREVEPORT LA
2014-03-20 318-588-3XXX 3000–3999Assigned CSC VOICE, LLC 612K SHREVEPORT LA
2014-03-20 318-588-4XXX 4000–4999Assigned CSC VOICE, LLC 612K SHREVEPORT LA
2014-03-20 318-588-5XXX 5000–5999Assigned CSC VOICE, LLC 612K SHREVEPORT LA
2014-03-20 318-606-3XXX 3000–3999Assigned CSC VOICE, LLC 612K SHREVEPORT LA
2014-02-06 318-612-3XXX 3000–3999Assigned CSC VOICE, LLC 612K BOYCE LA
2014-02-03 318-209-4XXX 4000–4999Assigned CSC VOICE, LLC 612K WINNFIELD LA
2014-02-03 318-224-5XXX 5000–5999Assigned CSC VOICE, LLC 612K RUSTON LA
2014-02-03 318-224-6XXX 6000–6999Assigned CSC VOICE, LLC 612K RUSTON LA
2014-02-03 318-224-7XXX 7000–7999Assigned CSC VOICE, LLC 612K RUSTON LA
2014-02-03 318-274-8XXX 8000–8999Assigned CSC VOICE, LLC 612K GRAMBLING LA
2014-02-03 318-310-2XXX 2000–2999Assigned CSC VOICE, LLC 612K POLLOCK LA
2014-02-03 318-431-1XXX 1000–1999Assigned CSC VOICE, LLC 612K MANY LA
2014-02-03 318-499-3XXX 3000–3999Assigned CSC VOICE, LLC 612K MER ROUGE LA
2014-02-03 318-521-6XXX 6000–6999Assigned CSC VOICE, LLC 612K NATCHITCHS LA
2014-02-03 318-521-7XXX 7000–7999Assigned CSC VOICE, LLC 612K NATCHITCHS LA
2014-02-03 318-521-8XXX 8000–8999Assigned CSC VOICE, LLC 612K NATCHITCHS LA
2014-02-03 318-615-4XXX 4000–4999Assigned CSC VOICE, LLC 612K HAUGHTON LA
2014-02-03 318-615-5XXX 5000–5999Assigned CSC VOICE, LLC 612K HAUGHTON LA
2014-02-03 318-639-9XXX 9000–9999Assigned CSC VOICE, LLC 612K MINDEN LA
2014-02-03 318-645-1XXX 1000–1999Assigned CSC VOICE, LLC 612K ZWOLLE LA
2014-02-03 318-935-8XXX 8000–8999Assigned CSC VOICE, LLC 612K BENTON LA
2014-02-03 318-974-3XXX 3000–3999Assigned CSC VOICE, LLC 612K BASTROP LA
2014-02-03 318-974-4XXX 4000–4999Assigned CSC VOICE, LLC 612K BASTROP LA
2014-02-03 318-974-6XXX 6000–6999Assigned CSC VOICE, LLC 612K BASTROP LA
2013-11-19 318-704-1XXX 1000–1999Assigned CSC VOICE, LLC 612K ALEXANDRIA LA
2013-11-19 318-704-2XXX 2000–2999Assigned CSC VOICE, LLC 612K ALEXANDRIA LA
2013-11-19 318-704-3XXX 3000–3999Assigned CSC VOICE, LLC 612K ALEXANDRIA LA
2013-11-19 318-704-4XXX 4000–4999Assigned CSC VOICE, LLC 612K ALEXANDRIA LA

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.