NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 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, all time — NPA 319
METROPCS, INC. 28
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
2025-03-28 319-405-4XXX 4000–4999Assigned METROPCS, INC. 5562 ANAMOSA IA
2025-03-28 319-468-4XXX 4000–4999Assigned METROPCS, INC. 5562 INDEPNDNCE IA
2025-03-28 319-490-3XXX 3000–3999Assigned METROPCS, INC. 5562 CEDARFALLS IA
2025-03-28 319-910-2XXX 2000–2999Assigned METROPCS, INC. 5562 PARKERSBG IA
2022-06-09 319-410-3XXX 3000–3999Assigned METROPCS, INC. 5562 OELWEIN IA
2022-04-25 319-767-0XXX 0000–0999Assigned METROPCS, INC. 5562 KEOKUK IA
2021-09-20 319-379-1XXX 1000–1999Assigned METROPCS, INC. 5562 IOWA CITY IA
2021-06-23 319-619-9XXX 9000–9999Assigned METROPCS, INC. 5562 MONTROSE IA
2020-09-20 319-206-8XXX 8000–8999Assigned METROPCS, INC. 5562 CEDAR RPDS IA
2018-07-27 319-694-8XXX 8000–8999Assigned METROPCS, INC. 5562 BRIGHTON IA
2018-07-27 319-878-8XXX 8000–8999Assigned METROPCS, INC. 5562 FARMINGTON IA
2018-07-18 319-495-5XXX 5000–5999Assigned METROPCS, INC. 5562 LAPORTE CY IA
2018-07-18 319-674-4XXX 4000–4999Assigned METROPCS, INC. 5562 WELLMAN IA
2018-07-18 319-709-7XXX 7000–7999Assigned METROPCS, INC. 5562 WINTHROP IA
2018-07-18 319-823-3XXX 3000–3999Assigned METROPCS, INC. 5562 GRUNDY CTR IA
2018-07-18 319-839-3XXX 3000–3999Assigned METROPCS, INC. 5562 MARENGO IA
2018-07-18 319-844-3XXX 3000–3999Assigned METROPCS, INC. 5562 MONTICELLO IA
2018-06-28 319-677-3XXX 3000–3999Assigned METROPCS, INC. 5562 KEOSAUQUA IA
2018-06-28 319-722-7XXX 7000–7999Assigned METROPCS, INC. 5562 WILLIAMSBG IA
2018-06-18 319-204-2XXX 2000–2999Assigned METROPCS, INC. 5562 MTPLEASANT IA
2018-06-18 319-460-7XXX 7000–7999Assigned METROPCS, INC. 5562 WASHINGTON IA
2018-06-06 319-206-1XXX 1000–1999Assigned METROPCS, INC. 5562 CEDAR RPDS IA
2018-06-06 319-206-2XXX 2000–2999Assigned METROPCS, INC. 5562 CEDAR RPDS IA
2018-06-06 319-209-3XXX 3000–3999Assigned METROPCS, INC. 5562 BURLINGTON IA
2018-06-06 319-259-4XXX 4000–4999Assigned METROPCS, INC. 5562 IOWA CITY IA
2018-06-06 319-419-3XXX 3000–3999Assigned METROPCS, INC. 5562 WAVERLY IA
2018-06-05 319-888-0XXX 0000–0999Assigned METROPCS, INC. 5562 WATERLOO IA
2003-11-26 319-669-9XXX 9000–9999Assigned METROPCS, INC. 5562 FT MADISON IA

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.