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
2014-01-07 901-612-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2014-01-07 901-612-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2013-12-26 901-801-0XXX 0000–0999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-12-26 901-801-1XXX 1000–1999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-12-26 901-801-2XXX 2000–2999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-12-26 901-801-3XXX 3000–3999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-12-26 901-801-4XXX 4000–4999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-12-26 901-801-7XXX 7000–7999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-12-26 901-801-8XXX 8000–8999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-12-26 901-801-9XXX 9000–9999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-12-13 901-801-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F MEMPHIS TN
2013-12-13 901-801-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F MEMPHIS TN
2013-12-06 901-520-0XXX 0000–0999Assigned E. RITTER COMMUNICATIONS, LLC 128L MILLINGTON TN
2013-12-06 901-612-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TN 4806 MEMPHIS TN
2013-12-06 901-612-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TN 4806 MEMPHIS TN
2013-12-02 901-221-6XXX 6000–6999Assigned BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 COLLIERVL TN
2013-11-25 901-254-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2013-11-25 901-316-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 COLLIERVL TN
2013-11-25 901-318-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2013-11-22 901-509-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J MEMPHIS TN
2013-11-07 901-440-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2013-11-07 901-440-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2013-11-07 901-495-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2013-11-07 901-495-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2013-10-08 901-208-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J MEMPHIS TN
2013-10-07 901-208-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2013-10-07 901-208-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2013-10-07 901-208-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2013-10-04 901-495-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TN 4806 MEMPHIS TN
2013-09-12 901-364-3XXX 3000–3999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-09-12 901-364-4XXX 4000–4999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-09-12 901-364-5XXX 5000–5999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-09-12 901-364-6XXX 6000–6999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-09-12 901-364-7XXX 7000–7999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-09-12 901-364-8XXX 8000–8999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-08-27 901-316-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J COLLIERVL TN
2013-08-27 901-424-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F SOMERVILLE TN
2013-08-15 901-203-0XXX 0000–0999Assigned PEERLESS NETWORK OF TENNESSEE, LLC - TN 276F MEMPHIS TN
2013-08-15 901-203-1XXX 1000–1999Assigned PEERLESS NETWORK OF TENNESSEE, LLC - TN 276F MEMPHIS TN
2013-08-15 901-203-2XXX 2000–2999Assigned PEERLESS NETWORK OF TENNESSEE, LLC - TN 276F MEMPHIS TN
2013-08-15 901-203-3XXX 3000–3999Assigned PEERLESS NETWORK OF TENNESSEE, LLC - TN 276F MEMPHIS TN
2013-08-15 901-203-4XXX 4000–4999Assigned PEERLESS NETWORK OF TENNESSEE, LLC - TN 276F MEMPHIS TN
2013-08-15 901-203-5XXX 5000–5999Assigned PEERLESS NETWORK OF TENNESSEE, LLC - TN 276F MEMPHIS TN
2013-08-15 901-203-6XXX 6000–6999Assigned PEERLESS NETWORK OF TENNESSEE, LLC - TN 276F MEMPHIS TN
2013-08-15 901-203-7XXX 7000–7999Assigned PEERLESS NETWORK OF TENNESSEE, LLC - TN 276F MEMPHIS TN
2013-08-15 901-203-8XXX 8000–8999Assigned PEERLESS NETWORK OF TENNESSEE, LLC - TN 276F MEMPHIS TN
2013-08-15 901-203-9XXX 9000–9999Assigned PEERLESS NETWORK OF TENNESSEE, LLC - TN 276F MEMPHIS TN
2013-08-13 901-208-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2013-08-02 901-440-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C MEMPHIS TN
2013-07-30 901-471-5XXX 5000–5999Assigned 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.