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
2019-05-24 901-446-1XXX 1000–1999Assigned ONVOY, LLC - TN 525E COLLIERVL TN
2019-05-03 901-431-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-05-03 901-431-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-05-03 901-431-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-05-03 901-524-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-05-03 901-524-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-05-03 901-579-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-05-03 901-579-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-05-03 901-677-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-05-03 901-677-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-05-03 901-677-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-05-03 901-677-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-05-03 901-677-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-05-03 901-701-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-05-03 901-721-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-05-03 901-721-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-04-24 901-431-6XXX 6000–6999Assigned PEERLESS NETWORK OF TENNESSEE, LLC - TN 276F MEMPHIS TN
2019-04-04 901-320-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-04-04 901-321-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-04-04 901-374-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-04-04 901-381-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-04-04 901-431-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-04-04 901-431-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-04-04 901-431-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-04-04 901-431-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-04-04 901-431-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-03-26 901-250-7XXX 7000–7999Assigned ONVOY, LLC - TN 525E LAGRANGE TN
2019-03-26 901-329-7XXX 7000–7999Assigned ONVOY, LLC - TN 525E COVINGTON TN
2019-03-26 901-329-8XXX 8000–8999Assigned ONVOY, LLC - TN 525E COVINGTON TN
2019-03-08 901-545-1XXX 1000–1999Assigned METROPCS, INC. 5562 MEMPHIS TN
2019-03-08 901-765-7XXX 7000–7999Assigned METROPCS, INC. 5562 MEMPHIS TN
2019-03-04 901-325-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-03-04 901-325-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-03-04 901-325-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-03-04 901-325-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-03-04 901-325-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-03-04 901-379-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-03-04 901-390-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-03-04 901-427-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-03-04 901-427-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-03-04 901-427-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-03-04 901-427-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-03-04 901-427-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-03-04 901-427-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-03-04 901-427-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-03-04 901-427-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-03-01 901-427-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F MEMPHIS TN
2019-02-11 901-422-7XXX 7000–7999Assigned PEERLESS NETWORK OF TENNESSEE, LLC - TN 276F MEMPHIS TN
2019-02-04 901-677-7XXX 7000–7999Assigned FRACTEL, LLC 965H MEMPHIS TN
2019-01-29 901-441-0XXX 0000–0999Assigned ONVOY, LLC - TN 525E MEMPHIS 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.