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 806
LEVEL 3 COMMUNICATIONS, LLC - TX 107
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
2026-04-09 806-312-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 POST TX
2026-04-09 806-325-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MORTON TX
2026-04-09 806-390-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 STRATFORD TX
2026-04-09 806-432-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 CANADIAN TX
2026-03-20 806-849-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 EARTH TX
2025-05-15 806-707-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HIGGINBTHM TX
2025-01-28 806-309-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 LUBBOCK TX
2025-01-28 806-309-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 LUBBOCK TX
2023-11-21 806-641-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AMARILLO TX
2023-05-11 806-405-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 LAMESA TX
2021-08-02 806-739-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 OLTON TX
2021-03-29 806-413-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 FARWELL TX
2021-01-05 806-315-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MULESHOE TX
2020-10-07 806-278-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MIAMI TX
2020-10-07 806-616-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PLAINS TX
2020-04-10 806-601-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 TAHOKA TX
2020-04-10 806-628-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 WILSON TX
2019-02-11 806-301-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BROWNFIELD TX
2019-02-11 806-551-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 LITTLEFLD TX
2019-02-11 806-666-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 FLOYDADA TX
2019-01-30 806-516-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 LUBBOCK TX
2018-11-21 806-563-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SUNRAY TX
2018-04-19 806-604-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PERRYTON TX
2017-12-29 806-205-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 CLARENDON TX
2017-10-27 806-514-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HARTLEY TX
2017-10-27 806-540-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 VEGA TX
2017-10-27 806-571-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 WELLINGTON TX
2017-10-24 806-479-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 CLAUDE TX
2017-10-12 806-270-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SPEARMAN TX
2017-10-10 806-280-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 FOLLETT TX
2017-10-10 806-459-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 FRIONA TX
2017-10-10 806-541-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DIMMITT TX
2017-08-31 806-451-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 LUBBOCK TX
2017-08-03 806-513-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AMARILLO TX
2017-06-09 806-451-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 LUBBOCK TX
2017-02-24 806-305-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DENVERCITY TX
2017-02-01 806-204-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MEMPHIS TX
2016-10-13 806-310-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AMARILLO TX
2016-05-06 806-749-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 LUBBOCK TX
2015-12-17 806-607-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ABERNATHY TX
2015-12-10 806-381-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AMARILLO TX
2015-11-23 806-454-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 CROSBYTON TX
2015-09-23 806-412-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 LUBBOCK TX
2015-07-22 806-517-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AMARILLO TX
2015-07-22 806-749-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 LUBBOCK TX
2014-11-20 806-884-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DALHART TX
2014-05-08 806-228-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PERRYTON TX
2014-04-25 806-686-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 LUBBOCK TX
2013-10-17 806-731-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AMARILLO TX
2013-10-11 806-472-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 LUBBOCK TX

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.