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
2012-03-08 901-208-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2012-03-08 901-208-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2012-02-02 901-207-9XXX 9000–9999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2012-01-30 901-235-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TN 4806 SOMERVILLE TN
2012-01-12 901-206-0XXX 0000–0999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2012-01-12 901-206-1XXX 1000–1999Assigned METROPCS, INC. 5562 MEMPHIS TN
2012-01-12 901-206-9XXX 9000–9999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2012-01-06 901-232-8XXX 8000–8999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2012-01-06 901-347-4XXX 4000–4999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2011-12-08 901-347-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MEMPHIS TN
2011-12-08 901-474-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J MEMPHIS TN
2011-11-02 901-244-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J MEMPHIS TN
2011-11-02 901-244-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J MEMPHIS TN
2011-11-01 901-444-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ARLINGTON TN
2011-11-01 901-444-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ARLINGTON TN
2011-09-23 901-286-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F COLLIERVL TN
2011-09-13 901-244-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2011-09-13 901-244-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2011-09-09 901-290-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TN 4806 ARLINGTON TN
2011-08-10 901-399-9XXX 9000–9999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2011-08-08 901-232-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2011-08-08 901-232-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2011-08-08 901-232-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2011-08-08 901-232-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2011-08-08 901-232-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2011-08-08 901-232-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2011-08-08 901-232-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2011-08-08 901-417-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J MEMPHIS TN
2011-08-08 901-417-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J MEMPHIS TN
2011-08-03 901-405-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C MEMPHIS TN
2011-07-27 901-343-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TN 4806 MEMPHIS TN
2011-07-27 901-746-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TN 4806 MEMPHIS TN
2011-07-22 901-300-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2011-07-21 901-235-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TN 4806 SOMERVILLE TN
2011-07-13 901-244-0XXX 0000–0999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2011-07-13 901-244-1XXX 1000–1999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2011-07-13 901-244-8XXX 8000–8999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2011-07-13 901-244-9XXX 9000–9999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2011-07-08 901-308-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2011-07-08 901-343-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2011-07-06 901-500-0XXX 0000–0999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2011-07-06 901-500-1XXX 1000–1999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2011-07-06 901-500-2XXX 2000–2999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2011-07-06 901-500-3XXX 3000–3999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2011-07-06 901-500-4XXX 4000–4999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2011-07-06 901-800-0XXX 0000–0999Assigned METROPCS, INC. 5562 MEMPHIS TN
2011-06-22 901-232-9XXX 9000–9999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2011-06-09 901-220-0XXX 0000–0999Assigned METROPCS, INC. 5562 MEMPHIS TN
2011-06-09 901-220-1XXX 1000–1999Assigned METROPCS, INC. 5562 MEMPHIS TN
2011-06-09 901-220-2XXX 2000–2999Assigned METROPCS, INC. 5562 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.