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
2011-09-15 314-499-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ST LOUIS MO
2011-09-15 314-499-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ST LOUIS MO
2011-09-15 314-649-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E MEHLVILLE MO
2011-09-09 314-475-6XXX 6000–6999Assigned SOUTHWESTERN BELL 9533 LADUE MO
2011-09-09 314-475-7XXX 7000–7999Assigned SOUTHWESTERN BELL 9533 LADUE MO
2011-09-09 314-499-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST LOUIS MO
2011-09-09 314-499-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST LOUIS MO
2011-08-26 314-375-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E OAKVILLE MO
2011-08-24 314-717-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 KIRKWOOD MO
2011-08-24 314-717-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 KIRKWOOD MO
2011-08-24 314-717-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 KIRKWOOD MO
2011-08-24 314-717-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 KIRKWOOD MO
2011-08-24 314-717-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 KIRKWOOD MO
2011-08-24 314-717-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 KIRKWOOD MO
2011-08-24 314-717-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 KIRKWOOD MO
2011-08-19 314-334-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E OAKVILLE MO
2011-08-18 314-492-9XXX 9000–9999Assigned ONVOY, LLC - MO 093F ST LOUIS MO
2011-08-16 314-475-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-08-16 314-475-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-08-10 314-499-3XXX 3000–3999Assigned ONVOY, LLC - MO 093F ST LOUIS MO
2011-08-10 314-499-4XXX 4000–4999Assigned ONVOY, LLC - MO 093F ST LOUIS MO
2011-07-22 314-262-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LADUE MO
2011-07-22 314-513-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LADUE MO
2011-07-22 314-513-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LADUE MO
2011-07-22 314-527-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LADUE MO
2011-07-22 314-708-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LADUE MO
2011-07-22 314-709-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LADUE MO
2011-07-22 314-709-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LADUE MO
2011-07-22 314-709-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LADUE MO
2011-07-22 314-743-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LADUE MO
2011-07-22 314-743-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LADUE MO
2011-07-22 314-743-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LADUE MO
2011-07-15 314-819-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 CREVECOEUR MO
2011-07-14 314-473-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-07-14 314-473-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-07-14 314-473-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-07-14 314-473-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-07-14 314-473-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-07-14 314-473-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-07-14 314-824-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-07-14 314-824-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-07-14 314-824-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-07-14 314-824-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-06-28 314-358-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-06-28 314-358-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-06-28 314-358-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-06-28 314-358-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-06-28 314-358-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-06-28 314-358-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2011-06-28 314-358-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LADUE 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.