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 308
LEVEL 3 COMMUNICATIONS, LLC - NE 121
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
2026-04-22 308-399-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 HAYES CTR NE
2026-04-09 308-413-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 THEDFORD NE
2026-04-09 308-463-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 TRENTON NE
2026-02-03 308-454-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 MAXWELL NE
2024-12-19 308-266-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 ATLANTA NE
2024-10-02 308-332-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 ARCHER NE
2023-08-08 308-435-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 MERNA NE
2023-05-17 308-360-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 GORDON NE
2023-05-05 308-261-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 IMPERIAL NE
2023-05-01 308-655-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 ARAPAHOE NE
2023-02-17 308-754-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 ST PAUL NE
2023-02-10 308-400-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 ORD NE
2023-01-17 308-783-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 MINATARE NE
2023-01-03 308-200-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 MCCOOK NE
2023-01-03 308-205-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 ELWOOD NE
2022-12-30 308-204-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 NO JULESBG NE
2022-12-30 308-207-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 CHADRON NE
2022-12-30 308-230-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 KIMBALL NE
2022-12-30 308-262-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 BRIDGEPORT NE
2022-12-30 308-275-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 GERING NE
2022-12-30 308-303-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 CAIRO NE
2022-12-30 308-313-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 ALLIANCE NE
2022-12-30 308-316-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 POTTER NE
2022-12-30 308-317-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 BROADWATER NE
2022-12-30 308-336-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 FARWELL NE
2022-12-30 308-337-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 ATLANTA NE
2022-12-30 308-351-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 GOTHENBURG NE
2022-12-30 308-354-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 LEWELLEN NE
2022-12-30 308-376-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 OSHKOSH NE
2022-12-30 308-545-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 BAYARD NE
2022-12-30 308-566-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 CHAPPELL NE
2022-12-30 308-594-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 WOOD RIVER NE
2022-12-30 308-665-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 CRAWFORD NE
2022-12-30 308-668-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 HARRISON NE
2022-12-30 308-687-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 ST LIBORY NE
2022-12-30 308-745-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 LOUP CITY NE
2022-12-30 308-824-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 OXFORD NE
2022-12-30 308-856-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 ELM CREEK NE
2022-12-30 308-999-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 HOLDREGE NE
2022-10-21 308-491-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 GRANT NE
2022-05-10 308-405-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 COZAD NE
2022-04-19 308-925-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 MORRILL NE
2022-03-18 308-465-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 OGALLALA NE
2021-06-29 308-456-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 MITCHELL NE
2020-10-27 308-203-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 SIDNEY NE
2020-10-27 308-270-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 KEARNEY NE
2020-09-22 308-940-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 CENTRAL CY NE
2020-07-28 308-304-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 MINDEN NE
2020-07-28 308-889-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 BIGSPRINGS NE
2020-05-07 308-302-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - NE 3233 TRYON NE

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.