NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 541
LEVEL 3 COMMUNICATIONS, LLC - OR 197
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
2023-02-10 541-328-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PINE GROVE OR
2023-02-10 541-381-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 FT KLAMATH OR
2023-02-10 541-395-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 MAUPIN OR
2023-02-10 541-477-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PAULINA OR
2023-02-10 541-498-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 NO UMPQUA OR
2023-02-10 541-723-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 MALIN OR
2023-02-10 541-943-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PAISLEY OR
2023-02-10 541-947-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 LAKEVIEW OR
2023-02-06 541-445-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 CAMAS VLY OR
2023-02-06 541-454-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 ARLINGTON OR
2023-02-06 541-594-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 CRATERLAKE OR
2023-02-06 541-763-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 FOSSIL OR
2023-01-30 541-442-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 WASCO OR
2023-01-30 541-468-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 SPRAY OR
2023-01-30 541-578-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 MOSIER OR
2023-01-30 541-985-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 TYGHVALLEY OR
2023-01-27 541-470-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 DURKEE OR
2023-01-27 541-491-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 SHEDD OR
2023-01-27 541-532-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PILOT ROCK OR
2023-01-27 541-542-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 SENECA OR
2023-01-27 541-560-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PROSPECT OR
2023-01-27 541-628-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 JOHN DAY OR
2023-01-27 541-641-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 YONCALLA OR
2023-01-27 541-694-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 CHEMULT OR
2023-01-27 541-697-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 HUNTINGTON OR
2023-01-27 541-703-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 UKIAH OR
2023-01-27 541-793-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 DIAMOND LK OR
2023-01-27 541-845-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 MERRILL OR
2023-01-27 541-859-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 ROCKYPOINT OR
2023-01-27 541-871-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 SPRAGUERIV OR
2023-01-27 541-872-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 GLIDE OR
2023-01-27 541-939-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 LONG CREEK OR
2023-01-27 541-940-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 LEXINGTON OR
2023-01-27 541-949-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 FISH LAKE OR
2023-01-26 541-544-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 WAMIC OR
2022-02-15 541-425-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 GOLD BEACH OR
2022-01-25 541-609-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PHILOMATH OR
2021-11-17 541-767-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 COTTAGEGRV OR
2021-06-15 541-551-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BANDON OR
2021-06-15 541-572-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 MYRTLE PT OR
2021-06-15 541-655-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 LANGLOIS OR
2021-03-24 541-818-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 SWEET HOME OR
2016-05-06 541-916-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 GRANTSPASS OR
2015-12-29 541-640-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEND OR
2015-09-30 541-930-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 MEDFORD OR
2015-07-24 541-797-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEND OR
2015-07-24 541-797-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEND OR
2015-04-22 541-825-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 DAYS CREEK OR
2015-04-22 541-832-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 GLENDALE OR
2015-03-16 541-797-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEND OR

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.