NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

2 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, last 30 days — NPA 667
METROPCS, INC. 2
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
2026-08-25 667-560-2XXX 2000–2999Assigned METROPCS, INC. 5562 BALTIMORE MD
2026-08-25 667-570-9XXX 9000–9999Assigned METROPCS, INC. 5562 BALTIMORE MD
2026-08-05 667-560-9XXX 9000–9999Assigned METROPCS, INC. 5562 BALTIMORE MD
2026-07-07 667-519-3XXX 3000–3999Assigned METROPCS, INC. 5562 BALTIMORE MD
2025-04-10 667-493-4XXX 4000–4999Assigned METROPCS, INC. 5562 ANNAPOLIS MD
2023-04-13 667-431-9XXX 9000–9999Assigned METROPCS, INC. 5562 ARBUTUS MD
2023-03-10 667-832-2XXX 2000–2999Assigned METROPCS, INC. 5562 BRYNPKLNCM MD
2023-02-28 667-386-5XXX 5000–5999Assigned METROPCS, INC. 5562 ARBUTUS MD
2023-02-28 667-386-7XXX 7000–7999Assigned METROPCS, INC. 5562 ARBUTUS MD
2023-02-08 667-386-4XXX 4000–4999Assigned METROPCS, INC. 5562 ARBUTUS MD
2023-01-04 667-386-2XXX 2000–2999Assigned METROPCS, INC. 5562 ARBUTUS MD
2022-01-08 667-318-9XXX 9000–9999Assigned METROPCS, INC. 5562 COCKEYSVL MD
2021-12-14 667-386-0XXX 0000–0999Assigned METROPCS, INC. 5562 ARBUTUS MD
2021-12-14 667-386-9XXX 9000–9999Assigned METROPCS, INC. 5562 ARBUTUS MD
2021-10-07 667-808-9XXX 9000–9999Assigned METROPCS, INC. 5562 EASTON MD
2021-05-04 667-301-5XXX 5000–5999Assigned METROPCS, INC. 5562 PRINCEFRCK MD
2021-05-04 667-353-1XXX 1000–1999Assigned METROPCS, INC. 5562 CARDIFF MD
2021-04-16 667-327-2XXX 2000–2999Assigned METROPCS, INC. 5562 CAMBRIDGE MD
2020-12-10 667-297-9XXX 9000–9999Assigned METROPCS, INC. 5562 EDGEWOOD MD
2020-07-28 667-653-4XXX 4000–4999Assigned METROPCS, INC. 5562 BRYNPKLNCM MD
2018-06-13 667-777-3XXX 3000–3999Assigned METROPCS, INC. 5562 SEVERNA PK MD
2018-04-05 667-227-1XXX 1000–1999Assigned METROPCS, INC. 5562 SALISBURY MD
2017-02-09 667-967-5XXX 5000–5999Assigned METROPCS, INC. 5562 GLENBURNIE MD
2016-08-23 667-706-7XXX 7000–7999Assigned METROPCS, INC. 5562 ELKTON MD
2016-02-22 667-200-7XXX 7000–7999Assigned METROPCS, INC. 5562 COLUMBIA MD
2016-02-22 667-200-8XXX 8000–8999Assigned METROPCS, INC. 5562 COLUMBIA MD
2016-02-22 667-786-0XXX 0000–0999Assigned METROPCS, INC. 5562 COLUMBIA MD
2013-07-19 667-206-9XXX 9000–9999Assigned METROPCS, INC. 5562 TOWSON MD
2013-07-02 667-308-4XXX 4000–4999Assigned METROPCS, INC. 5562 TOWSON MD
2013-07-02 667-308-5XXX 5000–5999Assigned METROPCS, INC. 5562 TOWSON MD
2013-07-02 667-308-6XXX 6000–6999Assigned METROPCS, INC. 5562 TOWSON MD

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.