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 304
LEVEL 3 COMMUNICATIONS, LLC - WV 141
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
2023-05-18 304-681-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 GRANTSVL WV
2023-04-28 304-978-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 CLAY WV
2022-03-22 304-246-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 SUMMERSVL WV
2021-06-28 304-501-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 WAYNE WV
2021-03-29 304-980-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 REEDSVILLE WV
2021-01-05 304-994-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 PETERSTOWN WV
2019-05-28 304-999-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 FORT ASHBY WV
2018-02-12 304-507-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 KINGWOOD WV
2016-09-26 304-446-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 ELK GARDEN WV
2016-03-29 304-901-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 MARTINSBG WV
2015-09-01 304-956-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 WHSLPHRSPG WV
2015-08-31 304-307-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 MADISON WV
2015-08-31 304-675-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 PTPLEASANT WV
2015-08-31 304-761-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 RIPLEY WV
2015-08-31 304-772-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 UNION WV
2015-08-28 304-305-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 BELMONT WV
2015-08-25 304-212-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 MORGANTOWN WV
2015-04-30 304-241-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 MORGANTOWN WV
2015-04-07 304-323-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 BLUEFIELD WV
2014-12-30 304-800-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 BLUEFIELD WV
2014-12-04 304-409-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 BLUEWELL WV
2014-09-25 304-885-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 CHARLES TN WV
2014-09-25 304-963-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 HNTNGTNZN2 WV
2014-08-28 304-621-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 ELKINS WV
2014-05-29 304-960-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 BLUEFIELD WV
2014-04-09 304-241-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 MORGANTOWN WV
2014-04-09 304-907-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 WHELNGZON1 WV
2014-01-24 304-362-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 BECKLEY WV
2013-12-11 304-931-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 CLARKSBURG WV
2013-10-16 304-362-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 BECKLEY WV
2013-08-08 304-937-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 BUFFALO WV
2013-06-26 304-596-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 MARTINSBG WV
2013-05-16 304-241-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 MORGANTOWN WV
2013-01-30 304-308-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 BLUEFIELD WV
2013-01-09 304-409-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 BLUEWELL WV
2013-01-09 304-512-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 RAVENSWOOD WV
2012-11-12 304-992-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 LEWISBURG WV
2012-07-05 304-933-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 BRIDGEPORT WV
2012-05-31 304-907-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 WHELNGZON1 WV
2012-05-17 304-809-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 BLUEFIELD WV
2012-03-14 304-409-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 BLUEWELL WV
2012-03-13 304-936-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 WINFIELD WV
2012-02-01 304-406-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 WESTON WV
2011-12-14 304-400-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 CHRLSTNZN1 WV
2011-12-14 304-491-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 WEIRTON WV
2011-08-31 304-212-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 MORGANTOWN WV
2011-04-12 304-605-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 WELLSBURG WV
2011-02-25 304-397-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 HURRICANE WV
2011-01-07 304-451-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 NEWMRTNSVL WV
2010-12-16 304-553-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WV 9944 CHRLSTNZN1 WV

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.