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
2014-03-18 901-443-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2014-03-18 901-443-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2014-03-18 901-443-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2014-03-18 901-443-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2014-03-18 901-443-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2014-03-18 901-443-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2014-03-18 901-443-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2014-03-18 901-504-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F ARLINGTON TN
2014-03-18 901-504-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F ARLINGTON TN
2014-03-13 901-352-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F LAGRANGE TN
2014-03-13 901-402-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MOSCOW TN
2014-03-13 901-402-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MOSCOW TN
2014-03-13 901-513-0XXX 0000–0999Assigned METROPCS, INC. 5562 MEMPHIS TN
2014-03-13 901-513-1XXX 1000–1999Assigned METROPCS, INC. 5562 MEMPHIS TN
2014-03-13 901-513-2XXX 2000–2999Assigned METROPCS, INC. 5562 MEMPHIS TN
2014-03-13 901-513-3XXX 3000–3999Assigned METROPCS, INC. 5562 MEMPHIS TN
2014-03-13 901-513-4XXX 4000–4999Assigned METROPCS, INC. 5562 MEMPHIS TN
2014-03-13 901-513-5XXX 5000–5999Assigned METROPCS, INC. 5562 MEMPHIS TN
2014-03-13 901-513-6XXX 6000–6999Assigned METROPCS, INC. 5562 MEMPHIS TN
2014-03-13 901-513-7XXX 7000–7999Assigned METROPCS, INC. 5562 MEMPHIS TN
2014-03-13 901-513-8XXX 8000–8999Assigned METROPCS, INC. 5562 MEMPHIS TN
2014-03-13 901-513-9XXX 9000–9999Assigned METROPCS, INC. 5562 MEMPHIS TN
2014-03-12 901-471-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F COLLIERVL TN
2014-03-12 901-471-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F COLLIERVL TN
2014-03-12 901-504-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ARLINGTON TN
2014-03-12 901-504-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ARLINGTON TN
2014-03-10 901-379-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2014-03-07 901-379-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J MEMPHIS TN
2014-03-04 901-443-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C MEMPHIS TN
2014-03-03 901-425-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MEMPHIS TN
2014-02-27 901-512-0XXX 0000–0999Assigned METROPCS, INC. 5562 MEMPHIS TN
2014-02-27 901-512-1XXX 1000–1999Assigned METROPCS, INC. 5562 MEMPHIS TN
2014-02-27 901-512-9XXX 9000–9999Assigned METROPCS, INC. 5562 MEMPHIS TN
2014-02-20 901-254-2XXX 2000–2999Assigned METROPCS, INC. 5562 MEMPHIS TN
2014-02-20 901-612-9XXX 9000–9999Assigned METROPCS, INC. 5562 MEMPHIS TN
2014-02-04 901-421-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MEMPHIS TN
2014-02-04 901-421-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J MEMPHIS TN
2014-01-28 901-612-4XXX 4000–4999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2014-01-28 901-612-5XXX 5000–5999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2014-01-28 901-612-6XXX 6000–6999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2014-01-28 901-612-7XXX 7000–7999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2014-01-28 901-612-8XXX 8000–8999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2014-01-21 901-296-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F COVINGTON TN
2014-01-21 901-421-2XXX 2000–2999Assigned BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MEMPHIS TN
2014-01-21 901-421-3XXX 3000–3999Assigned BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MEMPHIS TN
2014-01-21 901-421-4XXX 4000–4999Assigned BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MEMPHIS TN
2014-01-21 901-421-7XXX 7000–7999Assigned BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MEMPHIS TN
2014-01-21 901-453-1XXX 1000–1999Assigned BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MEMPHIS TN
2014-01-21 901-492-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 COLLIERVL TN
2014-01-21 901-860-6XXX 6000–6999Assigned LEVEL 3 TELECOM OF TENNESSEE, LLC - TN 7517 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.