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
2017-03-20 314-690-0XXX 0000–0999Assigned TELNYX LLC 073H SAPPINGTON MO
2017-03-06 314-405-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST LOUIS MO
2017-02-27 314-778-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 LADUE MO
2017-02-08 314-778-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 LADUE MO
2017-02-08 314-938-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 LADUE MO
2017-02-08 314-938-4XXX 4000–4999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LADUE MO
2017-01-31 314-356-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 ST LOUIS MO
2017-01-18 314-356-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 ST LOUIS MO
2017-01-18 314-356-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 ST LOUIS MO
2017-01-18 314-356-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 ST LOUIS MO
2017-01-18 314-356-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 ST LOUIS MO
2017-01-11 314-354-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J ST LOUIS MO
2017-01-11 314-354-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J ST LOUIS MO
2017-01-11 314-354-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J ST LOUIS MO
2017-01-10 314-230-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 ST LOUIS MO
2016-12-28 314-818-1XXX 1000–1999Assigned TELNYX LLC 073H ST LOUIS MO
2016-12-14 314-528-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LADUE MO
2016-12-12 314-230-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 ST LOUIS MO
2016-12-12 314-230-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 ST LOUIS MO
2016-12-12 314-230-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 ST LOUIS MO
2016-12-05 314-230-2XXX 2000–2999Assigned METROPCS, INC. 5562 ST LOUIS MO
2016-12-05 314-354-0XXX 0000–0999Assigned METROPCS, INC. 5562 ST LOUIS MO
2016-12-05 314-356-3XXX 3000–3999Assigned METROPCS, INC. 5562 ST LOUIS MO
2016-12-05 314-391-7XXX 7000–7999Assigned METROPCS, INC. 5562 ST LOUIS MO
2016-12-05 314-396-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2016-12-05 314-461-4XXX 4000–4999Assigned METROPCS, INC. 5562 MEHLVILLE MO
2016-12-05 314-461-7XXX 7000–7999Assigned METROPCS, INC. 5562 MEHLVILLE MO
2016-12-05 314-930-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2016-11-22 314-230-3XXX 3000–3999Assigned METROPCS, INC. 5562 ST LOUIS MO
2016-11-22 314-354-4XXX 4000–4999Assigned METROPCS, INC. 5562 ST LOUIS MO
2016-11-22 314-391-3XXX 3000–3999Assigned METROPCS, INC. 5562 ST LOUIS MO
2016-11-17 314-343-0XXX 0000–0999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F CREVECOEUR MO
2016-11-17 314-528-9XXX 9000–9999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F LADUE MO
2016-11-16 314-354-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 ST LOUIS MO
2016-10-31 314-339-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 ST LOUIS MO
2016-10-31 314-410-1XXX 1000–1999Assigned PEERLESS NETWORK OF MISSOURI, LLC - MO 225F ST LOUIS MO
2016-10-31 314-519-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST LOUIS MO
2016-10-31 314-519-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST LOUIS MO
2016-10-31 314-519-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST LOUIS MO
2016-10-31 314-519-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST LOUIS MO
2016-10-31 314-519-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST LOUIS MO
2016-10-31 314-519-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST LOUIS MO
2016-10-31 314-519-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST LOUIS MO
2016-10-31 314-519-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST LOUIS MO
2016-10-31 314-519-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST LOUIS MO
2016-10-31 314-519-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 ST LOUIS MO
2016-10-26 314-462-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K KIRKWOOD MO
2016-10-20 314-985-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K CREVECOEUR MO
2016-10-04 314-343-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CREVECOEUR MO
2016-09-28 314-451-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - MO 7218 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.