NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

6 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, last 30 days — NPA 901
ONVOY, LLC - TN 4
NEW CINGULAR WIRELESS PCS, LLC - GA 1
E. RITTER COMMUNICATIONS, LLC 1
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
2019-09-25 901-455-2XXX 2000–2999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2019-09-25 901-456-7XXX 7000–7999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2019-09-13 901-329-4XXX 4000–4999Assigned ONVOY, LLC - TN 525E COVINGTON TN
2019-09-13 901-329-5XXX 5000–5999Assigned ONVOY, LLC - TN 525E COVINGTON TN
2019-08-26 901-456-1XXX 1000–1999Assigned EXIANT COMMUNICATIONS LLC 114J MEMPHIS TN
2019-08-14 901-455-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F MEMPHIS TN
2019-07-25 901-403-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ARLINGTON TN
2019-07-25 901-403-1XXX 1000–1999Assigned TELNYX LLC 073H ARLINGTON TN
2019-07-24 901-455-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-07-24 901-455-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-07-24 901-455-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-07-24 901-455-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-07-24 901-455-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-07-24 901-455-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-07-24 901-455-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-07-19 901-450-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-07-19 901-450-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-07-19 901-450-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-07-19 901-450-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-07-19 901-450-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-07-19 901-450-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-07-19 901-765-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-07-19 901-765-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-07-10 901-450-3XXX 3000–3999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2019-07-10 901-450-4XXX 4000–4999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2019-07-10 901-450-5XXX 5000–5999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2019-07-08 901-450-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F MEMPHIS TN
2019-07-03 901-403-9XXX 9000–9999Assigned METROPCS, INC. 5562 ARLINGTON TN
2019-06-28 901-407-1XXX 1000–1999Assigned METROPCS, INC. 5562 MILLINGTON TN
2019-06-07 901-437-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-06-07 901-437-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-06-07 901-501-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-06-07 901-501-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-06-07 901-584-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-06-07 901-584-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-06-07 901-584-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-06-07 901-584-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-06-07 901-584-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-06-07 901-584-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-06-07 901-713-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-06-07 901-713-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-06-07 901-713-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-06-07 901-722-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-06-07 901-722-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-06-07 901-728-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-06-07 901-728-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-06-07 901-728-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-06-07 901-728-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-06-07 901-765-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-05-24 901-446-0XXX 0000–0999Assigned ONVOY, LLC - TN 525E COLLIERVL TN

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.