NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 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, all time — NPA 409
LEVEL 3 COMMUNICATIONS, LLC - TX 205
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
2024-11-12 409-214-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HEMPHILL TX
2024-11-12 409-290-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PINELAND TX
2022-09-26 409-271-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2022-09-26 409-271-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2022-09-26 409-271-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2022-09-26 409-271-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2022-09-06 409-245-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2022-01-04 409-571-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BUNA TX
2021-11-05 409-423-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 KIRBYVILLE TX
2021-11-02 409-222-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 WINNIE TX
2021-06-14 409-834-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 WILDWOOD TX
2021-06-04 409-900-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 LUMBERTON TX
2021-05-24 409-232-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 CHINA TX
2020-12-14 409-206-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MAURICEVL TX
2020-10-09 409-247-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2020-10-09 409-247-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2020-10-09 409-247-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2020-10-09 409-257-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2020-10-09 409-257-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2020-10-02 409-245-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2020-10-02 409-245-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2020-10-02 409-247-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2020-10-02 409-247-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2020-10-02 409-247-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2020-08-13 409-449-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 EVADALE TX
2020-05-29 409-474-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BRIDGECITY TX
2020-05-11 409-231-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 JASPER TX
2020-04-10 409-710-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2020-04-10 409-710-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2020-04-10 409-710-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2020-04-10 409-710-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2020-04-10 409-710-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2020-02-27 409-254-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 WOODVILLE TX
2019-07-16 409-248-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PORTARTHUR TX
2019-04-23 409-757-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2018-05-29 409-373-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SILSBEE TX
2018-05-25 409-216-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ORANGE TX
2018-05-14 409-283-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 WOODVILLE TX
2018-05-14 409-753-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 WESTBURY TX
2018-05-11 409-217-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PORTARTHUR TX
2018-05-11 409-231-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 JASPER TX
2018-03-21 409-794-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 FANNETT TX
2018-03-21 409-812-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2018-03-06 409-240-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2018-03-06 409-240-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2018-03-06 409-333-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2018-03-06 409-333-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX
2017-09-20 409-263-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SOUTHVIDOR TX
2017-09-20 409-723-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 NDLDPTNCHS TX
2017-08-18 409-240-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEAUMONT TX

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.