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 817
METROPCS, INC. 330
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
2026-06-15 817-553-4XXX 4000–4999Assigned METROPCS, INC. 5562 EULESS TX
2020-12-08 817-413-7XXX 7000–7999Assigned METROPCS, INC. 5562 FORT WORTH TX
2020-12-08 817-810-8XXX 8000–8999Assigned METROPCS, INC. 5562 FORT WORTH TX
2020-02-05 817-357-1XXX 1000–1999Assigned METROPCS, INC. 5562 CLEBURNE TX
2019-12-27 817-517-0XXX 0000–0999Assigned METROPCS, INC. 5562 CLEBURNE TX
2019-06-24 817-335-0XXX 0000–0999Assigned METROPCS, INC. 5562 FORT WORTH TX
2019-06-24 817-696-0XXX 0000–0999Assigned METROPCS, INC. 5562 FORT WORTH TX
2019-06-24 817-720-8XXX 8000–8999Assigned METROPCS, INC. 5562 FORT WORTH TX
2018-07-06 817-569-9XXX 9000–9999Assigned METROPCS, INC. 5562 FORT WORTH TX
2017-09-22 817-664-8XXX 8000–8999Assigned METROPCS, INC. 5562 ARLINGTON TX
2017-09-15 817-249-9XXX 9000–9999Assigned METROPCS, INC. 5562 FORT WORTH TX
2017-07-12 817-550-4XXX 4000–4999Assigned METROPCS, INC. 5562 WEATHERFD TX
2017-03-22 817-873-9XXX 9000–9999Assigned METROPCS, INC. 5562 GRAPEVINE TX
2017-03-02 817-405-5XXX 5000–5999Assigned METROPCS, INC. 5562 MANSFIELD TX
2016-12-07 817-722-4XXX 4000–4999Assigned METROPCS, INC. 5562 GRAPEVINE TX
2016-12-07 817-724-1XXX 1000–1999Assigned METROPCS, INC. 5562 GRAPEVINE TX
2016-12-07 817-766-3XXX 3000–3999Assigned METROPCS, INC. 5562 NRICHLDHLS TX
2016-12-07 817-770-9XXX 9000–9999Assigned METROPCS, INC. 5562 NRICHLDHLS TX
2016-12-07 817-809-1XXX 1000–1999Assigned METROPCS, INC. 5562 GRAPEVINE TX
2016-12-07 817-893-0XXX 0000–0999Assigned METROPCS, INC. 5562 NRICHLDHLS TX
2016-07-15 817-968-0XXX 0000–0999Assigned METROPCS, INC. 5562 NRICHLDHLS TX
2016-07-15 817-968-4XXX 4000–4999Assigned METROPCS, INC. 5562 NRICHLDHLS TX
2016-03-01 817-893-4XXX 4000–4999Assigned METROPCS, INC. 5562 NRICHLDHLS TX
2016-03-01 817-918-6XXX 6000–6999Assigned METROPCS, INC. 5562 NRICHLDHLS TX
2015-03-27 817-918-0XXX 0000–0999Assigned METROPCS, INC. 5562 NRICHLDHLS TX
2015-03-27 817-918-5XXX 5000–5999Assigned METROPCS, INC. 5562 NRICHLDHLS TX
2015-01-06 817-264-5XXX 5000–5999Assigned METROPCS, INC. 5562 ARLINGTON TX
2015-01-06 817-543-2XXX 2000–2999Assigned METROPCS, INC. 5562 ARLINGTON TX
2014-12-12 817-347-0XXX 0000–0999Assigned METROPCS, INC. 5562 FORT WORTH TX
2014-12-12 817-413-8XXX 8000–8999Assigned METROPCS, INC. 5562 FORT WORTH TX
2014-12-12 817-535-9XXX 9000–9999Assigned METROPCS, INC. 5562 FORT WORTH TX
2014-12-12 817-569-0XXX 0000–0999Assigned METROPCS, INC. 5562 FORT WORTH TX
2014-12-12 817-989-0XXX 0000–0999Assigned METROPCS, INC. 5562 FORT WORTH TX
2014-12-04 817-345-1XXX 1000–1999Assigned METROPCS, INC. 5562 NRICHLDHLS TX
2014-12-04 817-503-6XXX 6000–6999Assigned METROPCS, INC. 5562 NRICHLDHLS TX
2014-12-04 817-766-0XXX 0000–0999Assigned METROPCS, INC. 5562 NRICHLDHLS TX
2014-03-24 817-893-3XXX 3000–3999Assigned METROPCS, INC. 5562 NRICHLDHLS TX
2014-03-24 817-893-8XXX 8000–8999Assigned METROPCS, INC. 5562 NRICHLDHLS TX
2014-02-25 817-495-9XXX 9000–9999Assigned METROPCS, INC. 5562 FORT WORTH TX
2012-02-13 817-730-3XXX 3000–3999Assigned METROPCS, INC. 5562 FORT WORTH TX
2012-02-13 817-730-8XXX 8000–8999Assigned METROPCS, INC. 5562 FORT WORTH TX
2012-02-13 817-840-8XXX 8000–8999Assigned METROPCS, INC. 5562 FORT WORTH TX
2012-02-13 817-862-8XXX 8000–8999Assigned METROPCS, INC. 5562 FORT WORTH TX
2012-02-13 817-884-6XXX 6000–6999Assigned METROPCS, INC. 5562 FORT WORTH TX
2012-01-13 817-856-7XXX 7000–7999Assigned METROPCS, INC. 5562 ARLINGTON TX
2012-01-13 817-856-8XXX 8000–8999Assigned METROPCS, INC. 5562 ARLINGTON TX
2011-09-08 817-617-0XXX 0000–0999Assigned METROPCS, INC. 5562 ARLINGTON TX
2011-09-08 817-617-1XXX 1000–1999Assigned METROPCS, INC. 5562 ARLINGTON TX
2011-09-08 817-617-6XXX 6000–6999Assigned METROPCS, INC. 5562 ARLINGTON TX
2011-06-30 817-666-0XXX 0000–0999Assigned METROPCS, INC. 5562 CLEBURNE TX

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.