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 541
NEW CINGULAR WIRELESS PCS, LLC 305
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
2025-07-07 541-503-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EUGENE OR
2025-07-07 541-503-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EUGENE OR
2025-07-07 541-503-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EUGENE OR
2025-07-07 541-503-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EUGENE OR
2025-07-07 541-503-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EUGENE OR
2025-07-07 541-503-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EUGENE OR
2025-07-07 541-503-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EUGENE OR
2025-02-07 541-316-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDMOND OR
2024-11-22 541-603-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EUGENE OR
2024-11-22 541-603-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EUGENE OR
2024-11-22 541-603-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EUGENE OR
2024-10-18 541-698-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GOLD BEACH OR
2023-09-06 541-208-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEND OR
2023-09-06 541-208-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEND OR
2023-03-29 541-675-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MADRAS OR
2021-07-06 541-716-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HOOD RIVER OR
2021-04-18 541-651-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FOSSIL OR
2020-11-11 541-674-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CRESWELL OR
2020-05-29 541-819-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NEWPORT OR
2020-05-29 541-965-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 THE DALLES OR
2020-05-11 541-624-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LA GRANDE OR
2020-04-07 541-783-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CHILOQUIN OR
2020-04-07 541-819-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NEWPORT OR
2020-03-17 541-805-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LA GRANDE OR
2020-02-05 541-529-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OAKLAND OR
2020-01-10 541-674-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CRESWELL OR
2019-12-11 541-717-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BAKER OR
2019-04-08 541-674-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CRESWELL OR
2018-09-24 541-605-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LA GRANDE OR
2018-05-04 541-551-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BANDON OR
2018-01-10 541-527-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDMOND OR
2017-12-08 541-625-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ASHLAND OR
2016-11-21 541-625-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ASHLAND OR
2016-09-02 541-819-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NEWPORT OR
2016-07-05 541-640-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEND OR
2016-04-05 541-745-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CORVALLIS OR
2016-04-05 541-809-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MILTONFWTR OR
2016-02-29 541-662-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REEDSPORT OR
2016-02-09 541-305-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FLORENCE OR
2016-02-09 541-340-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 THE DALLES OR
2016-02-09 541-371-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HERMISTON OR
2016-02-09 541-669-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LINCOLN CY OR
2016-01-26 541-777-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MADRAS OR
2015-12-22 541-329-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BANDON OR
2015-12-22 541-578-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MOSIER OR
2015-12-22 541-800-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 STANFIELD OR
2015-12-22 541-802-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OAKLAND OR
2015-12-22 541-827-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CHILOQUIN OR
2015-12-21 541-378-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ROSEBURG OR
2015-12-21 541-399-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HOOD RIVER 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.