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
METROPCS, INC. 117
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
2025-04-07 541-309-9XXX 9000–9999Assigned METROPCS, INC. 5562 LAKEVIEW OR
2025-04-07 541-319-9XXX 9000–9999Assigned METROPCS, INC. 5562 REEDSPORT OR
2025-04-07 541-624-7XXX 7000–7999Assigned METROPCS, INC. 5562 LA GRANDE OR
2025-04-07 541-628-8XXX 8000–8999Assigned METROPCS, INC. 5562 JOHN DAY OR
2022-04-12 541-288-0XXX 0000–0999Assigned METROPCS, INC. 5562 THE DALLES OR
2020-09-20 541-400-4XXX 4000–4999Assigned METROPCS, INC. 5562 HOOD RIVER OR
2020-07-16 541-224-9XXX 9000–9999Assigned METROPCS, INC. 5562 CORVALLIS OR
2020-07-16 541-300-2XXX 2000–2999Assigned METROPCS, INC. 5562 THE DALLES OR
2020-07-16 541-364-0XXX 0000–0999Assigned METROPCS, INC. 5562 LINCOLN CY OR
2020-07-16 541-838-4XXX 4000–4999Assigned METROPCS, INC. 5562 PROVOTMPHY OR
2020-07-16 541-936-8XXX 8000–8999Assigned METROPCS, INC. 5562 ALBANY OR
2020-01-15 541-838-9XXX 9000–9999Assigned METROPCS, INC. 5562 PROVOTMPHY OR
2019-08-09 541-300-4XXX 4000–4999Assigned METROPCS, INC. 5562 THE DALLES OR
2018-09-21 541-974-9XXX 9000–9999Assigned METROPCS, INC. 5562 ALBANY OR
2018-09-21 541-992-7XXX 7000–7999Assigned METROPCS, INC. 5562 LINCOLN CY OR
2018-03-01 541-300-1XXX 1000–1999Assigned METROPCS, INC. 5562 THE DALLES OR
2017-11-27 541-538-3XXX 3000–3999Assigned METROPCS, INC. 5562 WHITE CITY OR
2017-11-27 541-538-4XXX 4000–4999Assigned METROPCS, INC. 5562 WHITE CITY OR
2017-11-13 541-675-9XXX 9000–9999Assigned METROPCS, INC. 5562 MADRAS OR
2017-10-17 541-838-1XXX 1000–1999Assigned METROPCS, INC. 5562 PROVOTMPHY OR
2017-10-17 541-838-2XXX 2000–2999Assigned METROPCS, INC. 5562 PROVOTMPHY OR
2017-06-09 541-403-6XXX 6000–6999Assigned METROPCS, INC. 5562 BAKER OR
2017-03-24 541-630-2XXX 2000–2999Assigned METROPCS, INC. 5562 CENTRAL PT OR
2017-03-23 541-823-7XXX 7000–7999Assigned METROPCS, INC. 5562 ONTARIO OR
2016-12-16 541-799-8XXX 8000–8999Assigned METROPCS, INC. 5562 EUGENE OR
2016-06-28 541-630-6XXX 6000–6999Assigned METROPCS, INC. 5562 CENTRAL PT OR
2016-04-15 541-240-5XXX 5000–5999Assigned METROPCS, INC. 5562 PENDLETON OR
2016-04-15 541-300-5XXX 5000–5999Assigned METROPCS, INC. 5562 THE DALLES OR
2016-04-15 541-380-3XXX 3000–3999Assigned METROPCS, INC. 5562 HOOD RIVER OR
2016-04-15 541-418-7XXX 7000–7999Assigned METROPCS, INC. 5562 LINCOLN CY OR
2016-04-15 541-900-2XXX 2000–2999Assigned METROPCS, INC. 5562 ROSEBURG OR
2016-04-15 541-900-3XXX 3000–3999Assigned METROPCS, INC. 5562 ROSEBURG OR
2015-12-10 541-809-9XXX 9000–9999Assigned METROPCS, INC. 5562 MILTONFWTR OR
2015-09-23 541-570-6XXX 6000–6999Assigned METROPCS, INC. 5562 LEBANON OR
2014-10-01 541-295-6XXX 6000–6999Assigned METROPCS, INC. 5562 GRANTSPASS OR
2014-10-01 541-299-6XXX 6000–6999Assigned METROPCS, INC. 5562 ROGUERIVER OR
2014-10-01 541-630-1XXX 1000–1999Assigned METROPCS, INC. 5562 CENTRAL PT OR
2014-10-01 541-636-6XXX 6000–6999Assigned METROPCS, INC. 5562 EUGENE OR
2014-10-01 541-668-2XXX 2000–2999Assigned METROPCS, INC. 5562 BEND OR
2014-10-01 541-851-6XXX 6000–6999Assigned METROPCS, INC. 5562 KLAMATHFLS OR
2014-10-01 541-862-0XXX 0000–0999Assigned METROPCS, INC. 5562 PROVOTMPHY OR
2014-10-01 541-862-3XXX 3000–3999Assigned METROPCS, INC. 5562 PROVOTMPHY OR
2014-10-01 541-879-8XXX 8000–8999Assigned METROPCS, INC. 5562 WHITE CITY OR
2014-10-01 541-879-9XXX 9000–9999Assigned METROPCS, INC. 5562 WHITE CITY OR
2014-03-18 541-368-0XXX 0000–0999Assigned METROPCS, INC. 5562 CORVALLIS OR
2014-03-18 541-368-1XXX 1000–1999Assigned METROPCS, INC. 5562 CORVALLIS OR
2014-03-18 541-905-8XXX 8000–8999Assigned METROPCS, INC. 5562 ALBANY OR
2014-03-18 541-936-5XXX 5000–5999Assigned METROPCS, INC. 5562 ALBANY OR
2014-03-18 541-981-7XXX 7000–7999Assigned METROPCS, INC. 5562 ALBANY OR
2013-03-20 541-731-5XXX 5000–5999Assigned METROPCS, INC. 5562 EUGENE 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.