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 458
LEVEL 3 COMMUNICATIONS, LLC - OR 54
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
2024-05-31 458-297-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 HALFWAY OR
2023-09-26 458-544-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 EUGENE OR
2023-09-06 458-285-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 ALBANY OR
2023-04-25 458-250-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 EUGENE OR
2023-01-30 458-263-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 SILVERLAKE OR
2023-01-30 458-294-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 MARCOLA OR
2023-01-30 458-295-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 JEFFERSON OR
2023-01-30 458-687-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 MORO OR
2023-01-30 458-723-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BURNS OR
2023-01-30 458-742-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 NO HARNEY OR
2023-01-30 458-783-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 DEPOE BAY OR
2023-01-30 458-837-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 MITCHELL OR
2023-01-30 458-846-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 SO HARNEY OR
2023-01-30 458-987-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 GILCHRIST OR
2023-01-27 458-241-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 ECHO OR
2023-01-27 458-248-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 LOWELL OR
2023-01-27 458-249-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 CHILOQUIN OR
2023-01-27 458-252-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 OREGONSLOP OR
2023-01-27 458-259-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BROWNSVL OR
2023-01-27 458-269-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 DRAIN OR
2023-01-27 458-284-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 HARRISBURG OR
2023-01-27 458-293-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 STANFIELD OR
2023-01-27 458-433-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 VALE OR
2023-01-27 458-451-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BUTTEFALLS OR
2023-01-27 458-459-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BLUE RIVER OR
2023-01-27 458-505-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 SHADY COVE OR
2023-01-27 458-624-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 NO POWDER OR
2023-01-27 458-625-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BONANZA OR
2023-01-27 458-632-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 IONE OR
2023-01-27 458-675-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 OAKRIDGE OR
2023-01-27 458-726-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 MONUMENT OR
2023-01-27 458-787-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 HEPPNER OR
2023-01-27 458-886-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BLY OR
2023-01-27 458-900-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 ATHENA OR
2022-03-02 458-250-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 EUGENE OR
2022-01-25 458-237-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 ODELL OR
2022-01-25 458-562-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 WALDPORT OR
2022-01-25 458-868-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 SOUTHBEACH OR
2021-12-01 458-275-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 CRESWELL OR
2021-11-23 458-280-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 OAKLAND OR
2021-11-17 458-270-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 VENETA OR
2021-06-23 458-267-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 POWERS OR
2021-06-23 458-268-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 COQUILLE OR
2021-02-16 458-244-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 MYRTLE CRK OR
2020-11-27 458-757-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 MILTONFWTR OR
2020-09-08 458-223-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 LEBANON OR
2020-07-08 458-240-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 EUGENE OR
2019-07-30 458-217-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 JUNCTIONCY OR
2019-06-10 458-203-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 ROGUERIVER OR
2019-03-28 458-221-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 EUGENE OR

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.