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 334
LEVEL 3 COMMUNICATIONS, LLC - AL 148
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
2026-03-31 334-436-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 ROANOKE AL
2026-01-29 334-623-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 WEST POINT AL
2026-01-09 334-631-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 SHAWMUT AL
2025-07-31 334-359-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 WING AL
2025-03-11 334-924-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 ABBEVILLE AL
2024-04-22 334-473-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 UNION SPG AL
2024-04-17 334-924-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 ABBEVILLE AL
2023-09-07 334-761-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 DOTHAN AL
2023-02-14 334-455-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 CAMDEN AL
2023-02-08 334-698-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 WICKSBURG AL
2023-01-25 334-665-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 GREENVILLE AL
2023-01-25 334-842-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 BRUNDIDGE AL
2022-12-15 334-441-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 ABBEVILLE AL
2022-12-07 334-815-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 SLOCOMB AL
2022-06-10 334-710-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 LANGDALE AL
2022-06-08 334-851-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 MONTGOMERY AL
2021-11-08 334-709-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 DALEVILLE AL
2021-11-08 334-867-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 GENEVA AL
2021-11-08 334-896-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 NEWTON AL
2021-11-08 334-966-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 HARTFORD AL
2021-11-08 334-997-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 SAMSON AL
2021-10-13 334-824-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 DOTHAN AL
2021-07-16 334-892-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 GANTT AL
2021-07-13 334-378-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 KINSTON AL
2021-06-29 334-504-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 ANDALUSIA AL
2021-06-29 334-542-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 RED LEVEL AL
2021-06-29 334-554-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 ELBA AL
2021-06-29 334-586-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 NEWBROCKTN AL
2021-06-29 334-764-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 OPP AL
2021-06-29 334-822-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 BRANTLEY AL
2021-06-29 334-945-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 DOZIER AL
2021-06-28 334-237-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 OZARK AL
2021-06-22 334-441-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 ABBEVILLE AL
2020-03-27 334-679-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 MONTGOMERY AL
2019-12-19 334-390-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 ENTERPRISE AL
2019-11-27 334-500-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 DOTHAN AL
2019-05-30 334-632-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 ABBEVILLE AL
2019-04-09 334-653-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 COTTONWOOD AL
2019-04-08 334-789-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 ASHFORD AL
2018-07-31 334-500-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 DOTHAN AL
2017-12-04 334-373-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 VREDENBG AL
2017-12-04 334-594-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 CATHERINE AL
2017-11-01 334-438-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 THOMASTON AL
2017-11-01 334-918-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 KOWALIGA AL
2017-09-22 334-441-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 ABBEVILLE AL
2017-09-22 334-785-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 HEADLAND AL
2017-07-18 334-451-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 MONTGOMERY AL
2017-07-18 334-954-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 MONTGOMERY AL
2017-05-31 334-828-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 DOTHAN AL
2017-04-11 334-557-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 MONTGOMERY AL

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.