NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

1 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 480
TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 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
2014-01-28 480-434-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2014-01-28 480-758-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2014-01-28 480-758-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2014-01-28 480-825-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2013-12-27 480-434-6XXX 6000–6999Assigned SADDLEBACK COMMUNICATIONS COMPANY - AZ 7991 PHOENIX AZ
2013-12-26 480-738-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J PHOENIX AZ
2013-12-26 480-738-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J PHOENIX AZ
2013-12-26 480-758-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2013-12-26 480-825-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2013-12-26 480-825-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2013-12-26 480-825-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2013-12-26 480-825-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2013-12-26 480-825-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2013-12-26 480-825-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2013-12-26 480-825-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2013-12-18 480-434-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2013-12-17 480-589-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2013-12-17 480-589-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2013-12-17 480-815-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2013-12-10 480-842-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2013-12-10 480-842-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2013-12-05 480-386-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2013-12-05 480-386-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2013-12-05 480-386-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2013-12-05 480-386-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2013-11-22 480-842-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2013-11-22 480-842-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2013-11-05 480-842-3XXX 3000–3999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2013-11-05 480-842-4XXX 4000–4999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2013-10-29 480-842-5XXX 5000–5999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2013-10-29 480-842-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2013-10-29 480-842-8XXX 8000–8999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2013-10-22 480-386-2XXX 2000–2999Assigned METROPCS, INC. 5562 PHOENIX AZ
2013-10-22 480-386-3XXX 3000–3999Assigned METROPCS, INC. 5562 PHOENIX AZ
2013-10-22 480-386-4XXX 4000–4999Assigned METROPCS, INC. 5562 PHOENIX AZ
2013-10-22 480-386-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J PHOENIX AZ
2013-10-22 480-386-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J PHOENIX AZ
2013-10-22 480-519-1XXX 1000–1999Assigned METROPCS, INC. 5562 PHOENIX AZ
2013-10-21 480-519-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2013-10-21 480-519-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2013-10-21 480-519-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2013-10-15 480-356-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2013-10-15 480-356-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2013-10-15 480-356-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2013-10-15 480-356-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2013-10-15 480-356-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2013-10-15 480-356-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2013-10-15 480-356-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2013-10-15 480-356-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2013-10-15 480-356-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ

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.