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
2013-07-30 901-860-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF TENNESSEE, LLC - TN 7517 COLLIERVL TN
2013-07-24 901-410-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J MEMPHIS TN
2013-07-11 901-440-5XXX 5000–5999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-07-11 901-440-6XXX 6000–6999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-07-03 901-364-0XXX 0000–0999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-07-03 901-364-1XXX 1000–1999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-07-03 901-364-2XXX 2000–2999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-07-03 901-364-9XXX 9000–9999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-07-03 901-376-0XXX 0000–0999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2013-07-03 901-376-1XXX 1000–1999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2013-07-03 901-376-2XXX 2000–2999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2013-07-03 901-376-3XXX 3000–3999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2013-07-03 901-376-4XXX 4000–4999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2013-07-03 901-376-5XXX 5000–5999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2013-07-03 901-376-6XXX 6000–6999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2013-07-03 901-376-7XXX 7000–7999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2013-07-03 901-376-8XXX 8000–8999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2013-07-03 901-376-9XXX 9000–9999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2013-05-29 901-321-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2013-05-29 901-440-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2013-05-29 901-440-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2013-05-29 901-440-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2013-05-29 901-440-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2013-05-24 901-235-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F SOMERVILLE TN
2013-05-24 901-379-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J MEMPHIS TN
2013-05-24 901-454-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J MEMPHIS TN
2013-05-24 901-504-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F ARLINGTON TN
2013-05-20 901-505-3XXX 3000–3999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-05-20 901-505-7XXX 7000–7999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-05-20 901-505-8XXX 8000–8999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-05-20 901-505-9XXX 9000–9999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-05-10 901-505-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F MEMPHIS TN
2013-05-10 901-505-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F MEMPHIS TN
2013-05-10 901-505-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F MEMPHIS TN
2013-05-09 901-736-1XXX 1000–1999Assigned METROPCS, INC. 5562 MEMPHIS TN
2013-05-07 901-457-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 COLLIERVL TN
2013-04-25 901-505-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C MEMPHIS TN
2013-04-18 901-495-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2013-04-18 901-505-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2013-04-18 901-509-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2013-04-18 901-509-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2013-04-16 901-509-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2013-03-15 901-402-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J MOSCOW TN
2013-03-12 901-504-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ARLINGTON TN
2013-02-28 901-509-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2013-02-26 901-509-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J MEMPHIS TN
2013-02-22 901-509-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F MEMPHIS TN
2013-02-13 901-440-1XXX 1000–1999Assigned NUSO, LLC 551G MEMPHIS TN
2013-02-07 901-504-2XXX 2000–2999Assigned ONVOY, LLC - TN 525E ARLINGTON TN
2013-02-06 901-867-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ARLINGTON 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.