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
UNITED STATES CELLULAR - IA 120
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
2026-01-06 319-407-6XXX 6000–6999Assigned UNITED STATES CELLULAR - IA 6266 WAVERLY IA
2026-01-06 319-407-7XXX 7000–7999Assigned UNITED STATES CELLULAR - IA 6266 WAVERLY IA
2025-05-07 319-490-5XXX 5000–5999Assigned UNITED STATES CELLULAR - IA 6266 CEDARFALLS IA
2025-05-07 319-910-5XXX 5000–5999Assigned UNITED STATES CELLULAR - IA 6266 PARKERSBG IA
2025-01-03 319-238-5XXX 5000–5999Assigned UNITED STATES CELLULAR - IA 6266 OELWEIN IA
2025-01-03 319-407-4XXX 4000–4999Assigned UNITED STATES CELLULAR - IA 6266 WAVERLY IA
2024-12-26 319-428-7XXX 7000–7999Assigned UNITED STATES CELLULAR - IA 6266 BURLINGTON IA
2024-10-03 319-428-2XXX 2000–2999Assigned UNITED STATES CELLULAR - IA 6266 BURLINGTON IA
2024-10-03 319-428-3XXX 3000–3999Assigned UNITED STATES CELLULAR - IA 6266 BURLINGTON IA
2024-10-03 319-428-4XXX 4000–4999Assigned UNITED STATES CELLULAR - IA 6266 BURLINGTON IA
2024-10-03 319-428-5XXX 5000–5999Assigned UNITED STATES CELLULAR - IA 6266 BURLINGTON IA
2024-10-03 319-428-6XXX 6000–6999Assigned UNITED STATES CELLULAR - IA 6266 BURLINGTON IA
2023-12-28 319-767-2XXX 2000–2999Assigned UNITED STATES CELLULAR - IA 6266 KEOKUK IA
2023-12-11 319-428-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IA 6266 BURLINGTON IA
2023-05-24 319-422-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IA 6266 PARKERSBG IA
2022-06-13 319-304-8XXX 8000–8999Assigned UNITED STATES CELLULAR - IA 6266 CEDAR RPDS IA
2022-02-08 319-326-9XXX 9000–9999Assigned UNITED STATES CELLULAR - IA 6266 INDEPNDNCE IA
2021-12-14 319-407-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IA 6266 WAVERLY IA
2021-01-11 319-264-9XXX 9000–9999Assigned UNITED STATES CELLULAR - IA 6266 OELWEIN IA
2020-11-27 319-251-1XXX 1000–1999Assigned UNITED STATES CELLULAR - IA 6266 ANAMOSA IA
2020-10-12 319-666-2XXX 2000–2999Assigned UNITED STATES CELLULAR - IA 6266 CEDARFALLS IA
2020-07-30 319-201-6XXX 6000–6999Assigned UNITED STATES CELLULAR - IA 6266 MTPLEASANT IA
2020-07-24 319-989-1XXX 1000–1999Assigned UNITED STATES CELLULAR - IA 6266 PARKERSBG IA
2019-02-11 319-989-5XXX 5000–5999Assigned UNITED STATES CELLULAR - IA 6266 PARKERSBG IA
2018-08-29 319-251-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IA 6266 ANAMOSA IA
2018-04-30 319-775-8XXX 8000–8999Assigned UNITED STATES CELLULAR - IA 6266 CEDAR RPDS IA
2018-03-08 319-720-8XXX 8000–8999Assigned UNITED STATES CELLULAR - IA 6266 CEDAR RPDS IA
2017-10-02 319-222-1XXX 1000–1999Assigned UNITED STATES CELLULAR - IA 6266 CEDARFALLS IA
2017-08-31 319-249-8XXX 8000–8999Assigned UNITED STATES CELLULAR - IA 6266 CEDAR RPDS IA
2017-08-17 319-550-9XXX 9000–9999Assigned UNITED STATES CELLULAR - IA 6266 CEDAR RPDS IA
2017-08-07 319-264-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IA 6266 OELWEIN IA
2017-04-19 319-591-3XXX 3000–3999Assigned UNITED STATES CELLULAR - IA 6266 WASHINGTON IA
2017-01-18 319-271-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IA 6266 INDEPNDNCE IA
2016-12-07 319-800-7XXX 7000–7999Assigned UNITED STATES CELLULAR - IA 6266 IOWA CITY IA
2016-12-07 319-800-8XXX 8000–8999Assigned UNITED STATES CELLULAR - IA 6266 IOWA CITY IA
2016-12-07 319-975-5XXX 5000–5999Assigned UNITED STATES CELLULAR - IA 6266 ANAMOSA IA
2016-12-07 319-975-6XXX 6000–6999Assigned UNITED STATES CELLULAR - IA 6266 ANAMOSA IA
2016-08-29 319-520-9XXX 9000–9999Assigned UNITED STATES CELLULAR - IA 6266 KEOKUK IA
2016-07-14 319-201-8XXX 8000–8999Assigned UNITED STATES CELLULAR - IA 6266 MTPLEASANT IA
2016-04-27 319-559-7XXX 7000–7999Assigned UNITED STATES CELLULAR - IA 6266 WAVERLY IA
2016-04-27 319-559-8XXX 8000–8999Assigned UNITED STATES CELLULAR - IA 6266 WAVERLY IA
2016-04-13 319-800-4XXX 4000–4999Assigned UNITED STATES CELLULAR - IA 6266 IOWA CITY IA
2016-03-16 319-575-2XXX 2000–2999Assigned UNITED STATES CELLULAR - IA 6266 CEDARFALLS IA
2016-03-14 319-975-8XXX 8000–8999Assigned UNITED STATES CELLULAR - IA 6266 ANAMOSA IA
2016-01-20 319-800-3XXX 3000–3999Assigned UNITED STATES CELLULAR - IA 6266 IOWA CITY IA
2015-12-01 319-327-7XXX 7000–7999Assigned UNITED STATES CELLULAR - IA 6266 INDEPNDNCE IA
2014-12-29 319-975-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IA 6266 ANAMOSA IA
2014-12-12 319-575-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IA 6266 CEDARFALLS IA
2014-05-12 319-238-0XXX 0000–0999Assigned UNITED STATES CELLULAR - IA 6266 OELWEIN IA
2014-05-12 319-243-9XXX 9000–9999Assigned UNITED STATES CELLULAR - IA 6266 CEDARFALLS 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.