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
2014-10-30 901-850-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 COLLIERVL TN
2014-10-28 901-430-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ARLINGTON TN
2014-10-28 901-430-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ARLINGTON TN
2014-10-28 901-430-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ARLINGTON TN
2014-10-28 901-607-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2014-10-28 901-607-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2014-10-28 901-607-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2014-10-28 901-607-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2014-10-17 901-468-0XXX 0000–0999Assigned LEVEL 3 TELECOM OF TENNESSEE, LLC - TN 7517 COLLIERVL TN
2014-10-17 901-468-1XXX 1000–1999Assigned LEVEL 3 TELECOM OF TENNESSEE, LLC - TN 7517 COLLIERVL TN
2014-10-17 901-468-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF TENNESSEE, LLC - TN 7517 COLLIERVL TN
2014-10-17 901-602-0XXX 0000–0999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2014-10-17 901-602-1XXX 1000–1999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2014-10-17 901-602-9XXX 9000–9999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2014-10-17 901-607-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2014-10-17 901-607-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2014-10-17 901-607-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2014-10-17 901-607-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2014-10-17 901-607-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2014-10-17 901-607-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2014-10-15 901-414-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 COLLIERVL TN
2014-10-15 901-471-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 COLLIERVL TN
2014-10-14 901-421-0XXX 0000–0999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2014-10-14 901-421-1XXX 1000–1999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2014-10-14 901-453-0XXX 0000–0999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2014-10-14 901-453-2XXX 2000–2999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2014-10-14 901-453-8XXX 8000–8999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2014-10-14 901-453-9XXX 9000–9999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2014-10-10 901-453-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2014-10-01 901-430-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ARLINGTON TN
2014-10-01 901-430-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ARLINGTON TN
2014-09-30 901-453-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TN 4806 MEMPHIS TN
2014-09-30 901-453-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TN 4806 MEMPHIS TN
2014-09-25 901-475-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F COVINGTON TN
2014-09-25 901-475-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F COVINGTON TN
2014-09-24 901-316-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TN 4806 COLLIERVL TN
2014-09-18 901-221-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J COLLIERVL TN
2014-09-16 901-421-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C MEMPHIS TN
2014-09-15 901-430-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TN 4806 ARLINGTON TN
2014-09-08 901-421-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2014-09-08 901-567-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2014-09-08 901-567-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2014-09-08 901-567-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2014-08-21 901-430-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F ARLINGTON TN
2014-08-18 901-352-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F LAGRANGE TN
2014-08-18 901-352-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F LAGRANGE TN
2014-08-18 901-401-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F WESTWHITEV TN
2014-08-18 901-401-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F WESTWHITEV TN
2014-08-18 901-402-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MOSCOW TN
2014-08-18 901-402-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MOSCOW 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.