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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2014-09-26 314-688-4XXX 4000–4999Assigned METROPCS, INC. 5562 ST LOUIS MO
2014-09-26 314-688-5XXX 5000–5999Assigned METROPCS, INC. 5562 ST LOUIS MO
2014-09-26 314-688-6XXX 6000–6999Assigned METROPCS, INC. 5562 ST LOUIS MO
2014-09-26 314-688-7XXX 7000–7999Assigned METROPCS, INC. 5562 ST LOUIS MO
2014-09-26 314-688-8XXX 8000–8999Assigned METROPCS, INC. 5562 ST LOUIS MO
2014-09-26 314-688-9XXX 9000–9999Assigned METROPCS, INC. 5562 ST LOUIS MO
2014-09-19 314-312-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ST LOUIS MO
2014-09-19 314-312-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ST LOUIS MO
2014-09-19 314-312-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ST LOUIS MO
2014-09-19 314-312-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ST LOUIS MO
2014-09-15 314-339-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ST LOUIS MO
2014-09-15 314-339-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ST LOUIS MO
2014-09-15 314-339-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ST LOUIS MO
2014-09-15 314-628-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K CREVECOEUR MO
2014-09-15 314-762-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E ST LOUIS MO
2014-09-10 314-675-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MEHLVILLE MO
2014-09-10 314-714-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MEHLVILLE MO
2014-09-05 314-339-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C ST LOUIS MO
2014-08-28 314-274-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LADUE MO
2014-08-28 314-388-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LADUE MO
2014-08-21 314-714-9XXX 9000–9999Assigned AT&T ENTERPRISES, LLC 516C MEHLVILLE MO
2014-08-19 314-325-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 7432 LADUE MO
2014-08-14 314-773-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 ST LOUIS MO
2014-07-25 314-899-8XXX 8000–8999Assigned ONVOY, LLC - MO 093F ST LOUIS MO
2014-07-22 314-762-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ST LOUIS MO
2014-07-22 314-762-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ST LOUIS MO
2014-07-22 314-865-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ST LOUIS MO
2014-07-22 314-879-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ST LOUIS MO
2014-07-22 314-899-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ST LOUIS MO
2014-07-22 314-899-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ST LOUIS MO
2014-07-16 314-733-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J LADUE MO
2014-07-15 314-762-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 ST LOUIS MO
2014-07-14 314-325-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C LADUE MO
2014-07-07 314-339-0XXX 0000–0999Assigned METROPCS, INC. 5562 ST LOUIS MO
2014-07-07 314-339-9XXX 9000–9999Assigned METROPCS, INC. 5562 ST LOUIS MO
2014-07-03 314-899-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 ST LOUIS MO
2014-07-03 314-899-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 ST LOUIS MO
2014-07-01 314-240-8XXX 8000–8999Assigned METROPCS, INC. 5562 ST LOUIS MO
2014-07-01 314-240-9XXX 9000–9999Assigned METROPCS, INC. 5562 ST LOUIS MO
2014-07-01 314-309-1XXX 1000–1999Assigned METROPCS, INC. 5562 ST LOUIS MO
2014-07-01 314-885-0XXX 0000–0999Assigned METROPCS, INC. 5562 MEHLVILLE MO
2014-07-01 314-885-5XXX 5000–5999Assigned METROPCS, INC. 5562 MEHLVILLE MO
2014-07-01 314-885-8XXX 8000–8999Assigned METROPCS, INC. 5562 MEHLVILLE MO
2014-07-01 314-899-3XXX 3000–3999Assigned METROPCS, INC. 5562 ST LOUIS MO
2014-06-24 314-254-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 LADUE MO
2014-06-24 314-254-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 LADUE MO
2014-06-24 314-254-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - MO 4932 LADUE MO
2014-06-24 314-722-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SAPPINGTON MO
2014-06-24 314-722-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - MO 993E SAPPINGTON MO
2014-06-23 314-722-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SAPPINGTON 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.