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
2005-02-17 314-599-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-16 314-266-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 LADUE MO
2005-02-16 314-775-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 KIRKWOOD MO
2005-02-15 314-238-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2005-02-15 314-238-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2005-02-15 314-315-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2005-02-15 314-315-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2005-02-15 314-315-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2005-02-15 314-315-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2005-02-15 314-315-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2005-02-15 314-315-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2005-02-15 314-620-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2005-02-15 314-620-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2005-02-15 314-800-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2005-02-15 314-856-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2005-02-15 314-856-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2005-02-15 314-856-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2005-02-15 314-856-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2005-02-09 314-584-8XXX 8000–8999Assigned ONVOY, LLC - MO 093F ST LOUIS MO
2005-02-08 314-641-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-02-08 314-744-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CREVECOEUR MO
2005-02-08 314-744-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CREVECOEUR MO
2005-01-25 314-392-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J CREVECOEUR MO
2005-01-25 314-732-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 ST LOUIS MO
2005-01-25 314-732-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 ST LOUIS MO
2005-01-21 314-802-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ST LOUIS MO
2005-01-20 314-269-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-01-20 314-450-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J ST LOUIS MO
2005-01-14 314-601-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-01-14 314-601-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2005-01-14 314-714-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 MEHLVILLE MO
2005-01-10 314-756-8XXX 8000–8999Assigned ONVOY, LLC - MO 093F SAPPINGTON MO
2005-01-05 314-272-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 SAPPINGTON MO
2005-01-04 314-620-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 KIRKWOOD MO
2005-01-04 314-714-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 MEHLVILLE MO
2004-12-15 314-596-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 KIRKWOOD MO
2004-12-10 314-450-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J ST LOUIS MO
2004-12-06 314-720-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 CREVECOEUR MO
2004-12-06 314-720-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 CREVECOEUR MO
2004-12-06 314-720-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 CREVECOEUR MO
2004-12-06 314-720-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 CREVECOEUR MO
2004-12-06 314-720-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 CREVECOEUR MO
2004-12-03 314-269-8XXX 8000–8999Assigned ONVOY, LLC - MO 093F ST LOUIS MO
2004-12-03 314-372-8XXX 8000–8999Assigned ONVOY, LLC - MO 093F LADUE MO
2004-11-19 314-373-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J LADUE MO
2004-11-19 314-549-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 OAKVILLE MO
2004-11-19 314-744-7XXX 7000–7999Assigned ONVOY, LLC - MO 093F CREVECOEUR MO
2004-11-18 314-333-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2004-11-11 314-392-1XXX 1000–1999Assigned METROPCS, INC. 5562 CREVECOEUR MO
2004-11-08 314-272-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 SAPPINGTON 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.