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 971
LEVEL 3 COMMUNICATIONS, LLC - OR 138
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
2024-04-03 971-324-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 NEHALEM OR
2023-12-12 971-436-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 GRESHAM OR
2023-06-16 971-437-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 CANBYNEEDY OR
2023-06-13 971-372-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 STAYTON OR
2023-01-30 971-299-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 GOVENTCAMP OR
2023-01-30 971-342-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 CANNON BCH OR
2023-01-30 971-390-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 JEWELL OR
2023-01-30 971-399-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 FALLS CITY OR
2023-01-27 971-364-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 CHARBONNEU OR
2023-01-27 971-391-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 ROCKAWAY OR
2023-01-27 971-588-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 GARIBALDI OR
2023-01-27 971-715-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 AURORA OR
2023-01-27 971-788-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 CLOVERDALE OR
2023-01-27 971-791-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BAY CITY OR
2022-12-05 971-812-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 SCAPPOOSE OR
2022-10-21 971-418-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 WARRENTON OR
2022-08-24 971-529-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 CLACKAMAS OR
2022-04-27 971-825-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 CLACKAMAS OR
2022-04-05 971-429-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2022-04-04 971-359-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEAVER CRK OR
2022-03-23 971-396-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 CLACKAMAS OR
2022-02-28 971-426-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 ESTACADA OR
2021-12-29 971-416-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEAVERTON OR
2021-11-01 971-416-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEAVERTON OR
2021-08-25 971-671-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 KNAPPA OR
2021-08-24 971-296-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 WESTPORT OR
2021-08-11 971-394-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2021-06-28 971-370-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 SILVERTON OR
2021-06-09 971-394-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2021-06-09 971-837-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEAVERTON OR
2021-05-13 971-394-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2021-04-26 971-465-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 DALLAS OR
2021-03-31 971-379-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2021-03-02 971-384-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BEAVERTON OR
2021-03-02 971-393-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2021-01-27 971-383-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2020-10-13 971-369-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2020-09-22 971-253-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 STFRD-SNDY OR
2020-01-15 971-346-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2020-01-15 971-346-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2019-12-03 971-361-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2019-11-20 971-362-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2019-11-20 971-362-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2019-11-20 971-362-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2019-11-20 971-362-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2019-11-20 971-362-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2019-10-23 971-501-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2019-01-25 971-346-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2018-11-20 971-309-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 WILLAMINA OR
2018-11-20 971-802-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OR 3234 SHERIDAN 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.