NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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
2014-04-04 314-858-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E KIRKWOOD MO
2014-04-04 314-885-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E MEHLVILLE MO
2014-03-27 314-309-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 ST LOUIS MO
2014-03-27 314-309-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 ST LOUIS MO
2014-03-25 314-224-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ST LOUIS MO
2014-03-21 314-736-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 LADUE MO
2014-03-12 314-421-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ST LOUIS MO
2014-03-12 314-534-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ST LOUIS MO
2014-03-07 314-309-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2014-03-06 314-833-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ST LOUIS MO
2014-03-06 314-833-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ST LOUIS MO
2014-03-05 314-690-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SAPPINGTON MO
2014-03-05 314-690-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SAPPINGTON MO
2014-03-05 314-801-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C LADUE MO
2014-03-04 314-224-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2014-03-04 314-224-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2014-03-04 314-224-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2014-03-04 314-224-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2014-03-04 314-224-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2014-03-04 314-224-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2014-03-04 314-224-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2014-03-04 314-224-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2014-03-04 314-896-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2014-03-03 314-764-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2014-03-03 314-764-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2014-02-26 314-626-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 KIRKWOOD MO
2014-02-25 314-441-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2014-02-25 314-585-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2014-02-25 314-585-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2014-02-25 314-755-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2014-02-25 314-755-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2014-02-25 314-755-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 LADUE MO
2014-02-25 314-755-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2014-02-25 314-755-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2014-02-25 314-755-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2014-02-25 314-755-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2014-02-25 314-755-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2014-02-10 314-736-6XXX 6000–6999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LADUE MO
2014-01-29 314-736-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LADUE MO
2014-01-27 314-833-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ST LOUIS MO
2014-01-27 314-833-4XXX 4000–4999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ST LOUIS MO
2014-01-21 314-224-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C ST LOUIS MO
2014-01-15 314-384-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E CREVECOEUR MO
2014-01-15 314-384-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E CREVECOEUR MO
2014-01-15 314-384-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E CREVECOEUR MO
2014-01-02 314-736-4XXX 4000–4999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LADUE MO
2014-01-02 314-899-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ST LOUIS MO
2013-12-27 314-736-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 LADUE MO
2013-12-18 314-899-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 ST LOUIS MO
2013-12-13 314-858-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 KIRKWOOD MO

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.