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 346
METROPCS, INC. 113
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
2026-06-15 346-749-4XXX 4000–4999Assigned METROPCS, INC. 5562 BAYTOWN TX
2026-06-15 346-864-9XXX 9000–9999Assigned METROPCS, INC. 5562 DICKINSON TX
2026-06-15 346-886-7XXX 7000–7999Assigned METROPCS, INC. 5562 RICHMNRNBG TX
2026-06-15 346-905-9XXX 9000–9999Assigned METROPCS, INC. 5562 SPRING TX
2026-06-15 346-921-3XXX 3000–3999Assigned METROPCS, INC. 5562 BAMMEL TX
2026-06-15 346-928-9XXX 9000–9999Assigned METROPCS, INC. 5562 CYPRESS TX
2026-06-15 346-936-9XXX 9000–9999Assigned METROPCS, INC. 5562 CLEVELAND TX
2022-11-22 346-605-9XXX 9000–9999Assigned METROPCS, INC. 5562 HSTNSUBURB TX
2022-11-22 346-607-9XXX 9000–9999Assigned METROPCS, INC. 5562 HOUSTON TX
2021-10-12 346-514-9XXX 9000–9999Assigned METROPCS, INC. 5562 STAFFORD TX
2020-10-28 346-449-9XXX 9000–9999Assigned METROPCS, INC. 5562 CHANNELVW TX
2020-10-28 346-450-9XXX 9000–9999Assigned METROPCS, INC. 5562 SUGAR LAND TX
2019-08-20 346-390-9XXX 9000–9999Assigned METROPCS, INC. 5562 BARKER TX
2019-08-20 346-391-9XXX 9000–9999Assigned METROPCS, INC. 5562 SUGAR LAND TX
2019-08-20 346-392-9XXX 9000–9999Assigned METROPCS, INC. 5562 SATSUMA TX
2019-08-20 346-393-9XXX 9000–9999Assigned METROPCS, INC. 5562 STAFFORD TX
2019-08-20 346-394-9XXX 9000–9999Assigned METROPCS, INC. 5562 CHANNELVW TX
2018-10-18 346-369-9XXX 9000–9999Assigned METROPCS, INC. 5562 BEACH CITY TX
2018-10-18 346-371-9XXX 9000–9999Assigned METROPCS, INC. 5562 STAFFORD TX
2017-11-15 346-283-9XXX 9000–9999Assigned METROPCS, INC. 5562 STAFFORD TX
2017-11-15 346-284-9XXX 9000–9999Assigned METROPCS, INC. 5562 BEACH CITY TX
2017-11-03 346-282-9XXX 9000–9999Assigned METROPCS, INC. 5562 CHANNELVW TX
2017-08-07 346-244-7XXX 7000–7999Assigned METROPCS, INC. 5562 SATSUMA TX
2017-07-17 346-264-9XXX 9000–9999Assigned METROPCS, INC. 5562 BARKER TX
2017-07-14 346-288-4XXX 4000–4999Assigned METROPCS, INC. 5562 BEACH CITY TX
2017-04-07 346-616-3XXX 3000–3999Assigned METROPCS, INC. 5562 HUMBLE TX
2017-03-30 346-255-9XXX 9000–9999Assigned METROPCS, INC. 5562 CHANNELVW TX
2017-03-29 346-420-9XXX 9000–9999Assigned METROPCS, INC. 5562 SUGAR LAND TX
2017-03-24 346-244-1XXX 1000–1999Assigned METROPCS, INC. 5562 SATSUMA TX
2017-03-24 346-244-2XXX 2000–2999Assigned METROPCS, INC. 5562 SATSUMA TX
2017-03-24 346-874-9XXX 9000–9999Assigned METROPCS, INC. 5562 SUGAR LAND TX
2017-01-18 346-243-9XXX 9000–9999Assigned METROPCS, INC. 5562 BARKER TX
2017-01-18 346-244-9XXX 9000–9999Assigned METROPCS, INC. 5562 SATSUMA TX
2017-01-18 346-245-9XXX 9000–9999Assigned METROPCS, INC. 5562 STAFFORD TX
2017-01-17 346-288-9XXX 9000–9999Assigned METROPCS, INC. 5562 BEACH CITY TX
2017-01-13 346-757-8XXX 8000–8999Assigned METROPCS, INC. 5562 STAFFORD TX
2017-01-13 346-757-9XXX 9000–9999Assigned METROPCS, INC. 5562 STAFFORD TX
2017-01-11 346-917-6XXX 6000–6999Assigned METROPCS, INC. 5562 CHANNELVW TX
2017-01-11 346-917-7XXX 7000–7999Assigned METROPCS, INC. 5562 CHANNELVW TX
2016-11-30 346-260-6XXX 6000–6999Assigned METROPCS, INC. 5562 SATSUMA TX
2016-11-30 346-760-9XXX 9000–9999Assigned METROPCS, INC. 5562 BARKER TX
2016-10-12 346-779-0XXX 0000–0999Assigned METROPCS, INC. 5562 SUGAR LAND TX
2016-10-12 346-779-1XXX 1000–1999Assigned METROPCS, INC. 5562 SUGAR LAND TX
2016-10-12 346-779-2XXX 2000–2999Assigned METROPCS, INC. 5562 SUGAR LAND TX
2016-10-12 346-779-3XXX 3000–3999Assigned METROPCS, INC. 5562 SUGAR LAND TX
2016-10-12 346-779-4XXX 4000–4999Assigned METROPCS, INC. 5562 SUGAR LAND TX
2016-10-12 346-779-5XXX 5000–5999Assigned METROPCS, INC. 5562 SUGAR LAND TX
2016-10-12 346-779-6XXX 6000–6999Assigned METROPCS, INC. 5562 SUGAR LAND TX
2016-10-12 346-779-7XXX 7000–7999Assigned METROPCS, INC. 5562 SUGAR LAND TX
2016-10-12 346-779-8XXX 8000–8999Assigned METROPCS, INC. 5562 SUGAR LAND 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.