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 361
LEVEL 3 COMMUNICATIONS, LLC - TX 106
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
2026-07-21 361-327-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ALICE TX
2023-10-24 361-833-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 C CHRISTI TX
2023-01-31 361-260-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 C CHRISTI TX
2021-07-07 361-666-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ALICE TX
2019-07-17 361-724-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 C CHRISTI TX
2019-02-11 361-255-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MATHIS TX
2019-02-11 361-491-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 YORKTOWN TX
2019-02-11 361-831-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 FLATONIA TX
2019-01-22 361-998-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AGUA DULCE TX
2018-12-12 361-703-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 VICTORIA TX
2018-10-02 361-233-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 NORDHEIM TX
2018-07-20 361-977-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PORTLDGGRY TX
2018-07-20 361-977-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PORTLDGGRY TX
2018-05-25 361-459-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BISHOP TX
2018-02-14 361-343-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BEEVILLE TX
2017-12-29 361-333-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 VICTORIA TX
2017-07-12 361-402-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 C CHRISTI TX
2016-08-08 361-456-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PAWNEE TX
2016-05-03 361-269-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 CHARCO TX
2016-05-03 361-439-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BERCLAIR TX
2016-04-21 361-256-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BENAVIDES TX
2016-04-21 361-646-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 REFUGIO TX
2016-04-20 361-231-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HEBBRONVL TX
2016-04-20 361-667-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 FALFURRIAS TX
2016-02-25 361-339-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PT ARANSAS TX
2015-11-12 361-333-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 VICTORIA TX
2015-09-03 361-360-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 C CHRISTI TX
2015-08-20 361-488-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 KINGSVILLE TX
2015-05-04 361-415-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ALICE TX
2015-04-10 361-881-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 C CHRISTI TX
2014-09-29 361-360-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 C CHRISTI TX
2014-09-29 361-541-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 VICTORIA TX
2014-09-16 361-386-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ROCKPORT TX
2014-08-14 361-403-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PALACIOS TX
2014-07-02 361-245-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HALLETTSVL TX
2014-07-02 361-808-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 C CHRISTI TX
2014-04-09 361-730-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 C CHRISTI TX
2014-03-06 361-704-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PORTLDGGRY TX
2013-12-31 361-436-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 THREERIVRS TX
2013-12-04 361-866-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 C CHRISTI TX
2013-08-29 361-426-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ROBSTOWN TX
2013-08-08 361-781-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 EDNA TX
2013-07-24 361-867-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PADRE IS TX
2013-06-27 361-494-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 GEORGEWEST TX
2013-05-08 361-792-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 C CHRISTI TX
2013-04-11 361-541-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 VICTORIA TX
2012-10-18 361-500-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 C CHRISTI TX
2012-09-07 361-488-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 KINGSVILLE TX
2012-03-07 361-221-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 KINGSVILLE TX
2012-01-20 361-792-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 C CHRISTI 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.