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 314
T-MOBILE USA, INC. 729
NEW CINGULAR WIRELESS PCS, LLC - IL 581
ONVOY, LLC - MO 511
BANDWIDTH.COM CLEC, LLC - MO 360
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 204
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
2005-04-11 314-335-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-04-05 314-333-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-04-05 314-335-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-03-31 314-335-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ST LOUIS MO
2005-03-30 314-564-8XXX 8000–8999Assigned ONVOY, LLC - MO 093F LADUE MO
2005-03-21 314-584-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-03-17 314-333-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-03-16 314-819-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CREVECOEUR MO
2005-03-10 314-985-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CREVECOEUR MO
2005-02-28 314-255-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-28 314-269-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-28 314-600-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-226-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-236-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-236-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-480-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-667-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-667-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-732-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-732-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-732-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-732-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-732-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-732-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-732-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-766-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-766-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-766-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-766-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-766-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-766-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-766-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-766-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-766-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-769-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-769-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-769-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-769-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-769-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-769-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-23 314-769-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-17 314-599-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-17 314-599-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-17 314-599-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-17 314-599-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-17 314-599-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-17 314-599-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-17 314-599-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-17 314-599-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-17 314-599-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO

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.