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 435
METROPCS, INC. 31
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
2020-07-14 435-294-4XXX 4000–4999Assigned METROPCS, INC. 5562 LOGAN UT
2020-04-24 435-375-2XXX 2000–2999Assigned METROPCS, INC. 5562 ST GEORGE UT
2020-04-24 435-572-9XXX 9000–9999Assigned METROPCS, INC. 5562 CEDAR CITY UT
2019-04-09 435-549-3XXX 3000–3999Assigned METROPCS, INC. 5562 VERNAL UT
2018-09-20 435-236-8XXX 8000–8999Assigned METROPCS, INC. 5562 ST GEORGE UT
2018-04-12 435-522-0XXX 0000–0999Assigned METROPCS, INC. 5562 ST GEORGE UT
2016-12-15 435-236-1XXX 1000–1999Assigned METROPCS, INC. 5562 ST GEORGE UT
2016-04-15 435-383-7XXX 7000–7999Assigned METROPCS, INC. 5562 CEDAR CITY UT
2016-02-19 435-922-9XXX 9000–9999Assigned METROPCS, INC. 5562 ST GEORGE UT
2014-10-01 435-315-6XXX 6000–6999Assigned METROPCS, INC. 5562 HEBER CITY UT
2014-07-10 435-255-0XXX 0000–0999Assigned METROPCS, INC. 5562 TOOELE UT
2014-07-10 435-255-9XXX 9000–9999Assigned METROPCS, INC. 5562 TOOELE UT
2014-07-10 435-265-0XXX 0000–0999Assigned METROPCS, INC. 5562 LOGAN UT
2014-07-10 435-265-9XXX 9000–9999Assigned METROPCS, INC. 5562 LOGAN UT
2014-07-03 435-799-6XXX 6000–6999Assigned METROPCS, INC. 5562 LOGAN UT
2014-07-02 435-226-3XXX 3000–3999Assigned METROPCS, INC. 5562 BRIGHAM CY UT
2014-07-02 435-538-0XXX 0000–0999Assigned METROPCS, INC. 5562 BRIGHAM CY UT
2012-03-09 435-531-8XXX 8000–8999Assigned METROPCS, INC. 5562 CEDAR CITY UT
2011-07-11 435-299-1XXX 1000–1999Assigned METROPCS, INC. 5562 PRICE UT
2011-02-22 435-401-4XXX 4000–4999Assigned METROPCS, INC. 5562 ROOSEVELT UT
2007-09-04 435-531-2XXX 2000–2999Assigned METROPCS, INC. 5562 CEDAR CITY UT
2007-08-16 435-256-1XXX 1000–1999Assigned METROPCS, INC. 5562 ST GEORGE UT
2007-08-16 435-256-2XXX 2000–2999Assigned METROPCS, INC. 5562 ST GEORGE UT
2007-08-16 435-256-3XXX 3000–3999Assigned METROPCS, INC. 5562 ST GEORGE UT
2007-08-01 435-724-7XXX 7000–7999Assigned METROPCS, INC. 5562 ROOSEVELT UT
2007-05-14 435-709-1XXX 1000–1999Assigned METROPCS, INC. 5562 HEBER CITY UT
2006-12-12 435-256-0XXX 0000–0999Assigned METROPCS, INC. 5562 ST GEORGE UT
2006-08-23 435-256-7XXX 7000–7999Assigned METROPCS, INC. 5562 ST GEORGE UT
2005-03-02 435-749-7XXX 7000–7999Assigned METROPCS, INC. 5562 CASTLEDALE UT
2004-08-16 435-621-6XXX 6000–6999Assigned METROPCS, INC. 5562 VERNAL UT
2004-07-07 435-850-8XXX 8000–8999Assigned METROPCS, INC. 5562 TOOELE UT

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.