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 830
LEVEL 3 COMMUNICATIONS, LLC - TX 91
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
2026-02-17 830-733-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 FREDECKSBG TX
2025-12-29 830-316-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MARION TX
2023-09-12 830-412-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 KERRVILLE TX
2023-01-30 830-291-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BRACKETTVL TX
2023-01-25 830-368-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BALCONES TX
2022-05-05 830-301-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 JOURDANTON TX
2021-07-21 830-263-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 GONZALES TX
2021-07-07 830-665-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DEVINE TX
2021-03-29 830-226-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SATTLER TX
2021-03-29 830-252-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BULVERDE TX
2021-03-29 830-280-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SABINA TX
2021-02-11 830-292-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 UVALDE TX
2021-01-11 830-247-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 TARPLEY TX
2021-01-11 830-260-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 FRIOCANYON TX
2020-12-30 830-428-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BOERNE TX
2020-09-03 830-288-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 CENTER PT TX
2020-09-03 830-314-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 COMFORT TX
2020-09-01 830-246-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MEDINA TX
2019-06-17 830-353-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 KERRVILLE TX
2018-10-29 830-253-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 LAVERNIA TX
2018-05-25 830-307-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 FREDECKSBG TX
2018-04-13 830-225-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 JOHNSON CY TX
2017-05-16 830-996-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 STOCKDALE TX
2017-02-01 830-268-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PLEASANTON TX
2016-12-28 830-218-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 LULING TX
2016-04-07 830-560-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SEGUIN TX
2015-10-21 830-310-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 NEWBRANFLS TX
2015-04-22 830-312-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 NEWBRANFLS TX
2015-03-13 830-549-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SEGUIN TX
2015-03-06 830-498-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 EAGLE PASS TX
2013-10-11 830-400-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 KENEDY TX
2013-10-11 830-500-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 NEWBRANFLS TX
2013-08-15 830-268-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PLEASANTON TX
2013-07-25 830-730-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 NEWBRANFLS TX
2013-07-25 830-730-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 NEWBRANFLS TX
2013-07-24 830-448-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 CRYSTAL CY TX
2013-06-27 830-255-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 CARRIZOSPG TX
2013-06-14 830-483-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 COTULLA TX
2013-03-28 830-522-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BANDERA TX
2012-10-25 830-428-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BOERNE TX
2012-02-29 830-865-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SEGUIN TX
2012-02-17 830-730-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 NEWBRANFLS TX
2012-01-26 830-355-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 CASTROVL TX
2011-11-30 830-443-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BOERNE TX
2011-09-30 830-549-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SEGUIN TX
2011-07-27 830-319-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 EAGLE PASS TX
2011-07-21 830-256-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 CAMPBELLTN TX
2011-07-12 830-613-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MARBLE FLS TX
2011-05-12 830-433-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SEGUIN TX
2011-04-04 830-500-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 NEWBRANFLS 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.