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
2007-06-28 314-686-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 KIRKWOOD MO
2007-06-22 314-874-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2007-06-22 314-874-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2007-06-22 314-874-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2007-06-22 314-874-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2007-06-22 314-874-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2007-06-21 314-735-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 ST LOUIS MO
2007-06-20 314-266-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 LADUE MO
2007-06-15 314-262-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J LADUE MO
2007-06-15 314-262-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J LADUE MO
2007-06-15 314-590-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J CREVECOEUR MO
2007-06-07 314-372-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2007-06-07 314-372-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2007-06-07 314-372-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2007-06-07 314-372-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2007-06-07 314-372-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2007-06-07 314-387-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2007-06-07 314-387-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2007-06-07 314-387-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2007-06-07 314-387-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2007-06-07 314-387-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2007-05-15 314-219-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E LADUE MO
2007-05-15 314-529-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E CREVECOEUR MO
2007-05-15 314-686-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E KIRKWOOD MO
2007-05-10 314-266-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 LADUE MO
2007-05-10 314-686-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 KIRKWOOD MO
2007-05-10 314-686-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 KIRKWOOD MO
2007-05-09 314-735-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST LOUIS MO
2007-05-03 314-375-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 OAKVILLE MO
2007-04-19 314-825-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2007-04-19 314-825-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2007-04-19 314-825-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2007-04-19 314-825-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2007-04-19 314-825-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2007-04-19 314-825-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2007-04-19 314-825-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2007-04-19 314-825-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2007-04-19 314-825-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2007-04-19 314-825-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2007-04-17 314-684-5XXX 5000–5999Assigned SOUTHWESTERN BELL 9533 LADUE MO
2007-04-17 314-684-6XXX 6000–6999Assigned SOUTHWESTERN BELL 9533 LADUE MO
2007-04-16 314-735-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST LOUIS MO
2007-04-16 314-735-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST LOUIS MO
2007-04-16 314-735-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST LOUIS MO
2007-04-16 314-735-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST LOUIS MO
2007-04-12 314-827-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2007-04-12 314-827-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2007-04-12 314-933-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2007-04-10 314-686-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J KIRKWOOD MO
2007-03-20 314-681-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD 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.