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
2004-05-28 480-375-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2004-05-28 480-459-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2004-05-19 480-323-2XXX 2000–2999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2004-04-26 480-323-1XXX 1000–1999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2004-04-26 480-323-3XXX 3000–3999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2004-04-26 480-323-4XXX 4000–4999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2004-04-26 480-323-7XXX 7000–7999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2004-04-20 480-212-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2004-04-20 480-365-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2004-04-20 480-403-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2004-04-20 480-421-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2004-04-20 480-459-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2004-04-20 480-459-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2004-04-20 480-612-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2004-04-20 480-784-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2004-03-29 480-556-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2004-03-29 480-668-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2004-03-11 480-776-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2004-03-09 480-724-0XXX 0000–0999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2004-03-09 480-724-1XXX 1000–1999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2004-03-09 480-724-2XXX 2000–2999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2004-03-09 480-724-3XXX 3000–3999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2004-03-09 480-724-4XXX 4000–4999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2004-03-09 480-724-5XXX 5000–5999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2004-03-09 480-724-6XXX 6000–6999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2004-03-03 480-993-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2004-03-02 480-776-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2004-03-02 480-776-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2004-02-19 480-503-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2004-02-19 480-603-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2004-02-13 480-718-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2004-02-13 480-718-8XXX 8000–8999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2004-02-10 480-993-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2004-02-10 480-993-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2004-02-10 480-993-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2004-02-10 480-993-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2004-02-10 480-993-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2004-02-10 480-993-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2004-01-29 480-558-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2004-01-29 480-567-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2004-01-29 480-567-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2004-01-29 480-567-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2004-01-29 480-567-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2004-01-23 480-882-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2004-01-13 480-206-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2004-01-13 480-650-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2004-01-05 480-214-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2004-01-05 480-214-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2004-01-05 480-459-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2004-01-05 480-459-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 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.