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
2013-02-20 314-305-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2013-02-12 314-695-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2013-02-12 314-695-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2013-02-05 314-275-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E CREVECOEUR MO
2013-02-05 314-300-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ST LOUIS MO
2013-02-05 314-399-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ST LOUIS MO
2013-02-05 314-399-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ST LOUIS MO
2013-02-05 314-439-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E CREVECOEUR MO
2013-02-05 314-502-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ST LOUIS MO
2013-02-05 314-682-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 CREVECOEUR MO
2013-02-01 314-690-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SAPPINGTON MO
2013-01-24 314-399-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 ST LOUIS MO
2013-01-24 314-399-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 ST LOUIS MO
2013-01-24 314-399-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 ST LOUIS MO
2013-01-24 314-399-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 ST LOUIS MO
2013-01-17 314-278-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2013-01-17 314-278-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2013-01-17 314-278-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2013-01-17 314-278-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2013-01-17 314-526-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 KIRKWOOD MO
2013-01-17 314-526-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 KIRKWOOD MO
2013-01-09 314-478-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2013-01-09 314-478-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2013-01-09 314-478-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2013-01-09 314-478-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2013-01-09 314-478-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2013-01-04 314-888-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 LADUE MO
2012-12-20 314-300-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C ST LOUIS MO
2012-12-20 314-399-3XXX 3000–3999Assigned SOUTHWESTERN BELL 9533 ST LOUIS MO
2012-12-20 314-942-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LADUE MO
2012-12-18 314-786-8XXX 8000–8999Assigned ONVOY, LLC - MO 093F CREVECOEUR MO
2012-12-18 314-819-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 CREVECOEUR MO
2012-12-14 314-300-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 ST LOUIS MO
2012-12-13 314-888-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 LADUE MO
2012-12-07 314-478-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 KIRKWOOD MO
2012-12-07 314-478-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 KIRKWOOD MO
2012-12-03 314-472-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SAPPINGTON MO
2012-11-16 314-300-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ST LOUIS MO
2012-11-13 314-669-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ST LOUIS MO
2012-11-09 314-334-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 OAKVILLE MO
2012-11-02 314-478-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2012-11-02 314-478-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2012-10-30 314-287-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2012-10-30 314-942-9XXX 9000–9999Assigned AT&T ENTERPRISES, LLC 516C LADUE MO
2012-10-29 314-380-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E OAKVILLE MO
2012-10-29 314-666-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E LADUE MO
2012-10-29 314-666-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E LADUE MO
2012-10-29 314-666-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E LADUE MO
2012-10-29 314-666-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E LADUE MO
2012-10-19 314-649-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 MEHLVILLE 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.