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
2016-09-21 314-461-0XXX 0000–0999Assigned ONVOY, LLC - MO 093F MEHLVILLE MO
2016-09-21 314-461-1XXX 1000–1999Assigned ONVOY, LLC - MO 093F MEHLVILLE MO
2016-09-21 314-926-0XXX 0000–0999Assigned ONVOY, LLC - MO 093F KIRKWOOD MO
2016-09-21 314-926-1XXX 1000–1999Assigned ONVOY, LLC - MO 093F KIRKWOOD MO
2016-09-16 314-380-8XXX 8000–8999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F OAKVILLE MO
2016-09-13 314-528-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2016-09-13 314-528-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2016-09-12 314-722-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SAPPINGTON MO
2016-09-12 314-722-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SAPPINGTON MO
2016-09-12 314-722-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SAPPINGTON MO
2016-08-30 314-343-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CREVECOEUR MO
2016-08-30 314-343-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CREVECOEUR MO
2016-08-30 314-343-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CREVECOEUR MO
2016-08-30 314-343-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CREVECOEUR MO
2016-08-30 314-528-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LADUE MO
2016-08-24 314-455-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LADUE MO
2016-08-10 314-455-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E LADUE MO
2016-08-10 314-455-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E LADUE MO
2016-08-10 314-455-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E LADUE MO
2016-08-10 314-525-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SAPPINGTON MO
2016-08-10 314-635-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SAPPINGTON MO
2016-08-10 314-756-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SAPPINGTON MO
2016-07-26 314-354-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ST LOUIS MO
2016-07-26 314-405-9XXX 9000–9999Assigned ONVOY, LLC - MO 093F ST LOUIS MO
2016-07-25 314-293-3XXX 3000–3999Assigned ONVOY, LLC - MO 093F OAKVILLE MO
2016-07-25 314-293-4XXX 4000–4999Assigned ONVOY, LLC - MO 093F OAKVILLE MO
2016-07-25 314-428-9XXX 9000–9999Assigned ONVOY, LLC - MO 093F LADUE MO
2016-07-25 314-455-5XXX 5000–5999Assigned ONVOY, LLC - MO 093F LADUE MO
2016-07-25 314-548-0XXX 0000–0999Assigned ONVOY, LLC - MO 093F CREVECOEUR MO
2016-07-25 314-594-4XXX 4000–4999Assigned ONVOY, LLC - MO 093F CREVECOEUR MO
2016-07-25 314-730-1XXX 1000–1999Assigned ONVOY, LLC - MO 093F SAPPINGTON MO
2016-07-25 314-730-3XXX 3000–3999Assigned ONVOY, LLC - MO 093F SAPPINGTON MO
2016-07-25 314-819-9XXX 9000–9999Assigned ONVOY, LLC - MO 093F CREVECOEUR MO
2016-07-18 314-405-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ST LOUIS MO
2016-07-13 314-731-9XXX 9000–9999Assigned AT&T ENTERPRISES, LLC 516C LADUE MO
2016-07-13 314-778-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LADUE MO
2016-07-07 314-701-3XXX 3000–3999Assigned METROPCS, INC. 5562 MEHLVILLE MO
2016-07-07 314-701-9XXX 9000–9999Assigned METROPCS, INC. 5562 MEHLVILLE MO
2016-07-05 314-320-1XXX 1000–1999Assigned METROPCS, INC. 5562 ST LOUIS MO
2016-07-05 314-320-3XXX 3000–3999Assigned METROPCS, INC. 5562 ST LOUIS MO
2016-07-05 314-405-7XXX 7000–7999Assigned METROPCS, INC. 5562 ST LOUIS MO
2016-06-22 314-819-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CREVECOEUR MO
2016-06-22 314-957-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E KIRKWOOD MO
2016-06-21 314-405-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 ST LOUIS MO
2016-06-21 314-405-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 ST LOUIS MO
2016-06-16 314-230-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ST LOUIS MO
2016-06-14 314-230-1XXX 1000–1999Assigned IP HORIZON LLC 515J ST LOUIS MO
2016-06-03 314-626-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 KIRKWOOD MO
2016-06-01 314-386-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LADUE MO
2016-06-01 314-682-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CREVECOEUR 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.