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
2011-01-18 314-643-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-01-18 314-643-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-01-18 314-643-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-01-18 314-699-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-01-10 314-810-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LADUE MO
2011-01-10 314-810-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LADUE MO
2011-01-10 314-810-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LADUE MO
2011-01-05 314-403-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 KIRKWOOD MO
2011-01-05 314-403-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 KIRKWOOD MO
2010-12-16 314-282-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 ST LOUIS MO
2010-12-16 314-282-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 ST LOUIS MO
2010-12-08 314-282-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ST LOUIS MO
2010-12-08 314-282-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ST LOUIS MO
2010-12-08 314-282-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ST LOUIS MO
2010-12-08 314-282-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ST LOUIS MO
2010-12-08 314-282-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ST LOUIS MO
2010-12-08 314-301-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E LADUE MO
2010-12-08 314-301-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E LADUE MO
2010-12-08 314-472-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SAPPINGTON MO
2010-12-08 314-529-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E CREVECOEUR MO
2010-11-18 314-400-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 LADUE MO
2010-11-18 314-400-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 LADUE MO
2010-11-15 314-737-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LADUE MO
2010-11-15 314-737-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LADUE MO
2010-11-11 314-587-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2010-11-11 314-587-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2010-11-11 314-587-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2010-11-11 314-587-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2010-11-11 314-593-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2010-11-11 314-593-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2010-11-11 314-593-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2010-11-11 314-593-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2010-11-11 314-593-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2010-11-11 314-593-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2010-11-04 314-252-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E LADUE MO
2010-11-04 314-252-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E LADUE MO
2010-11-04 314-472-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SAPPINGTON MO
2010-11-02 314-200-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 MEHLVILLE MO
2010-11-02 314-269-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 ST LOUIS MO
2010-11-02 314-282-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ST LOUIS MO
2010-11-02 314-329-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E MEHLVILLE MO
2010-11-02 314-403-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E KIRKWOOD MO
2010-10-26 314-222-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 LADUE MO
2010-10-19 314-261-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST LOUIS MO
2010-10-19 314-342-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST LOUIS MO
2010-10-19 314-612-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST LOUIS MO
2010-10-19 314-641-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST LOUIS MO
2010-10-19 314-763-0XXX 0000–0999Assigned ONVOY, LLC - MO 093F ST LOUIS MO
2010-10-19 314-763-1XXX 1000–1999Assigned ONVOY, LLC - MO 093F ST LOUIS MO
2010-10-19 314-763-2XXX 2000–2999Assigned ONVOY, LLC - MO 093F 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.