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 410
METROPCS, INC. 81
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
2021-07-08 410-770-1XXX 1000–1999Assigned METROPCS, INC. 5562 EASTON MD
2020-07-28 410-671-1XXX 1000–1999Assigned METROPCS, INC. 5562 EDGEWOOD MD
2020-03-20 410-670-6XXX 6000–6999Assigned METROPCS, INC. 5562 EDGEWOOD MD
2019-12-31 410-670-1XXX 1000–1999Assigned METROPCS, INC. 5562 EDGEWOOD MD
2019-12-12 410-671-8XXX 8000–8999Assigned METROPCS, INC. 5562 EDGEWOOD MD
2019-11-05 410-936-2XXX 2000–2999Assigned METROPCS, INC. 5562 SALISBURY MD
2018-09-11 410-994-6XXX 6000–6999Assigned METROPCS, INC. 5562 EDGEWOOD MD
2016-09-07 410-702-8XXX 8000–8999Assigned METROPCS, INC. 5562 REISTERSTN MD
2016-05-18 410-329-0XXX 0000–0999Assigned METROPCS, INC. 5562 COCKEYSVL MD
2016-02-23 410-892-6XXX 6000–6999Assigned METROPCS, INC. 5562 GLENBURNIE MD
2016-02-09 410-620-8XXX 8000–8999Assigned METROPCS, INC. 5562 ELKTON MD
2016-01-11 410-892-3XXX 3000–3999Assigned METROPCS, INC. 5562 GLENBURNIE MD
2015-12-07 410-572-7XXX 7000–7999Assigned METROPCS, INC. 5562 SALISBURY MD
2015-10-22 410-831-7XXX 7000–7999Assigned METROPCS, INC. 5562 SALISBURY MD
2015-06-09 410-772-4XXX 4000–4999Assigned METROPCS, INC. 5562 COLUMBIA MD
2015-06-08 410-831-2XXX 2000–2999Assigned METROPCS, INC. 5562 SALISBURY MD
2014-10-01 410-831-4XXX 4000–4999Assigned METROPCS, INC. 5562 SALISBURY MD
2014-10-01 410-831-5XXX 5000–5999Assigned METROPCS, INC. 5562 SALISBURY MD
2014-08-07 410-921-8XXX 8000–8999Assigned METROPCS, INC. 5562 SEVERN MD
2014-07-01 410-921-5XXX 5000–5999Assigned METROPCS, INC. 5562 SEVERN MD
2013-07-02 410-314-6XXX 6000–6999Assigned METROPCS, INC. 5562 ARBUTUS MD
2013-07-02 410-314-8XXX 8000–8999Assigned METROPCS, INC. 5562 ARBUTUS MD
2013-07-02 410-565-2XXX 2000–2999Assigned METROPCS, INC. 5562 ARBUTUS MD
2013-05-21 410-501-0XXX 0000–0999Assigned METROPCS, INC. 5562 ARBUTUS MD
2013-05-21 410-501-4XXX 4000–4999Assigned METROPCS, INC. 5562 ARBUTUS MD
2013-05-21 410-501-7XXX 7000–7999Assigned METROPCS, INC. 5562 ARBUTUS MD
2013-05-21 410-501-8XXX 8000–8999Assigned METROPCS, INC. 5562 ARBUTUS MD
2013-05-21 410-501-9XXX 9000–9999Assigned METROPCS, INC. 5562 ARBUTUS MD
2013-02-07 410-449-9XXX 9000–9999Assigned METROPCS, INC. 5562 SOLOMONS MD
2011-10-04 410-220-7XXX 7000–7999Assigned METROPCS, INC. 5562 ELKRIDGE MD
2011-09-29 410-564-3XXX 3000–3999Assigned METROPCS, INC. 5562 ELKRIDGE MD
2011-09-28 410-946-4XXX 4000–4999Assigned METROPCS, INC. 5562 SEVERNA PK MD
2011-09-07 410-567-3XXX 3000–3999Assigned METROPCS, INC. 5562 ELKRIDGE MD
2011-09-07 410-567-6XXX 6000–6999Assigned METROPCS, INC. 5562 ELKRIDGE MD
2011-09-07 410-717-2XXX 2000–2999Assigned METROPCS, INC. 5562 ELKRIDGE MD
2011-09-07 410-717-3XXX 3000–3999Assigned METROPCS, INC. 5562 ELKRIDGE MD
2011-08-16 410-946-7XXX 7000–7999Assigned METROPCS, INC. 5562 SEVERNA PK MD
2011-08-09 410-269-3XXX 3000–3999Assigned METROPCS, INC. 5562 SEVERNA PK MD
2011-08-09 410-269-9XXX 9000–9999Assigned METROPCS, INC. 5562 SEVERNA PK MD
2011-08-09 410-777-0XXX 0000–0999Assigned METROPCS, INC. 5562 SEVERNA PK MD
2011-08-09 410-777-3XXX 3000–3999Assigned METROPCS, INC. 5562 SEVERNA PK MD
2011-08-09 410-777-6XXX 6000–6999Assigned METROPCS, INC. 5562 SEVERNA PK MD
2011-08-09 410-793-2XXX 2000–2999Assigned METROPCS, INC. 5562 SEVERNA PK MD
2011-08-09 410-793-6XXX 6000–6999Assigned METROPCS, INC. 5562 SEVERNA PK MD
2010-07-07 410-861-3XXX 3000–3999Assigned METROPCS, INC. 5562 WESTMINSTR MD
2009-11-27 410-717-6XXX 6000–6999Assigned METROPCS, INC. 5562 ELKRIDGE MD
2009-11-27 410-717-8XXX 8000–8999Assigned METROPCS, INC. 5562 ELKRIDGE MD
2009-10-15 410-660-3XXX 3000–3999Assigned METROPCS, INC. 5562 ELKRIDGE MD
2009-10-15 410-660-8XXX 8000–8999Assigned METROPCS, INC. 5562 ELKRIDGE MD
2008-09-02 410-660-0XXX 0000–0999Assigned METROPCS, INC. 5562 ELKRIDGE MD

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.