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
2019-01-29 901-441-2XXX 2000–2999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2019-01-29 901-441-3XXX 3000–3999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2019-01-29 901-441-4XXX 4000–4999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2019-01-29 901-441-5XXX 5000–5999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2019-01-29 901-441-6XXX 6000–6999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2019-01-29 901-441-7XXX 7000–7999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2019-01-29 901-441-8XXX 8000–8999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2019-01-29 901-441-9XXX 9000–9999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2019-01-29 901-545-2XXX 2000–2999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2019-01-25 901-446-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F COLLIERVL TN
2019-01-18 901-504-3XXX 3000–3999Assigned ONVOY, LLC - TN 525E ARLINGTON TN
2019-01-18 901-910-3XXX 3000–3999Assigned ONVOY, LLC - TN 525E COLLIERVL TN
2019-01-18 901-910-4XXX 4000–4999Assigned ONVOY, LLC - TN 525E COLLIERVL TN
2019-01-14 901-341-8XXX 8000–8999Assigned METROPCS, INC. 5562 MEMPHIS TN
2019-01-14 901-390-3XXX 3000–3999Assigned METROPCS, INC. 5562 MEMPHIS TN
2019-01-09 901-436-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-01-09 901-436-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-01-09 901-436-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-01-09 901-524-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-01-09 901-524-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-01-09 901-524-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-01-09 901-524-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-01-09 901-721-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-01-09 901-721-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-01-09 901-721-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-01-09 901-728-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-01-09 901-728-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-01-09 901-728-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-01-09 901-765-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-01-09 901-765-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2019-01-03 901-436-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F MEMPHIS TN
2019-01-03 901-436-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F MEMPHIS TN
2019-01-03 901-436-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F MEMPHIS TN
2019-01-03 901-436-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F MEMPHIS TN
2019-01-03 901-436-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F MEMPHIS TN
2018-12-18 901-436-2XXX 2000–2999Assigned METROPCS, INC. 5562 MEMPHIS TN
2018-12-13 901-250-8XXX 8000–8999Assigned ONVOY, LLC - TN 525E LAGRANGE TN
2018-12-13 901-250-9XXX 9000–9999Assigned ONVOY, LLC - TN 525E LAGRANGE TN
2018-12-13 901-306-4XXX 4000–4999Assigned ONVOY, LLC - TN 525E MOSCOW TN
2018-12-13 901-306-5XXX 5000–5999Assigned ONVOY, LLC - TN 525E MOSCOW TN
2018-10-30 901-478-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F MEMPHIS TN
2018-10-30 901-478-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F MEMPHIS TN
2018-10-30 901-478-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F MEMPHIS TN
2018-10-30 901-478-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F MEMPHIS TN
2018-10-30 901-478-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F MEMPHIS TN
2018-10-30 901-478-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F MEMPHIS TN
2018-10-30 901-478-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F MEMPHIS TN
2018-10-30 901-478-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F MEMPHIS TN
2018-10-30 901-478-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F MEMPHIS TN
2018-10-30 901-478-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F 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.