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
2021-08-31 901-645-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H MEMPHIS TN
2021-08-31 901-645-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H MEMPHIS TN
2021-08-31 901-645-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H MEMPHIS TN
2021-08-30 901-593-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H SOMERVILLE TN
2021-08-30 901-599-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H LAGRANGE TN
2021-08-30 901-621-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H WESTWHITEV TN
2021-08-30 901-627-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H MOSCOW TN
2021-08-27 901-613-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H ARLINGTON TN
2021-08-27 901-625-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H COLLIERVL TN
2021-08-25 901-582-4XXX 4000–4999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2021-08-25 901-632-0XXX 0000–0999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2021-08-25 901-632-1XXX 1000–1999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2021-08-25 901-632-2XXX 2000–2999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2021-08-25 901-632-3XXX 3000–3999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2021-08-25 901-632-4XXX 4000–4999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2021-08-25 901-632-5XXX 5000–5999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2021-08-25 901-632-6XXX 6000–6999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2021-08-25 901-632-7XXX 7000–7999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2021-08-25 901-632-8XXX 8000–8999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2021-08-25 901-632-9XXX 9000–9999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2021-08-24 901-519-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TN 4806 MEMPHIS TN
2021-08-23 901-557-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F ARLINGTON TN
2021-08-23 901-593-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F SOMERVILLE TN
2021-08-23 901-593-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F SOMERVILLE TN
2021-08-23 901-613-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F ARLINGTON TN
2021-08-19 901-625-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F COLLIERVL TN
2021-08-19 901-625-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F COLLIERVL TN
2021-08-16 901-558-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2021-08-16 901-558-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2021-08-16 901-558-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2021-08-16 901-558-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2021-08-16 901-558-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2021-08-16 901-558-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2021-08-16 901-558-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2021-08-16 901-558-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2021-08-16 901-810-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2021-08-16 901-810-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2021-08-16 901-810-3XXX 3000–3999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2021-08-16 901-810-4XXX 4000–4999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2021-08-16 901-810-5XXX 5000–5999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2021-08-16 901-810-6XXX 6000–6999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2021-08-16 901-810-7XXX 7000–7999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2021-08-16 901-810-8XXX 8000–8999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2021-08-16 901-810-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2021-08-16 901-902-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2021-08-16 901-902-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2021-08-16 901-902-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2021-08-16 901-902-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2021-08-10 901-558-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F MEMPHIS TN
2021-08-03 901-243-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J MUNFORD 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.