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
2005-09-26 480-656-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2005-09-26 480-656-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2005-09-26 480-656-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2005-09-26 480-656-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2005-09-26 480-656-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2005-09-26 480-656-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2005-09-26 480-656-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2005-09-26 480-656-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2005-09-19 480-292-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2005-09-19 480-292-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2005-09-19 480-292-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2005-09-15 480-292-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2005-09-15 480-292-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2005-09-15 480-292-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2005-09-14 480-353-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2005-09-14 480-353-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2005-09-14 480-522-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2005-09-14 480-522-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2005-09-14 480-522-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2005-09-14 480-606-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2005-09-02 480-457-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-09-02 480-735-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-09-02 480-735-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-09-02 480-754-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-09-01 480-292-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2005-09-01 480-292-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2005-09-01 480-292-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2005-09-01 480-292-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2005-08-30 480-393-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2005-08-30 480-393-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2005-08-30 480-393-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2005-08-30 480-393-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2005-08-30 480-393-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2005-08-23 480-393-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2005-08-23 480-393-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2005-08-23 480-393-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2005-08-22 480-393-6XXX 6000–6999Assigned METROPCS, INC. 5562 PHOENIX AZ
2005-08-19 480-789-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2005-08-19 480-789-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2005-08-19 480-789-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2005-08-19 480-789-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2005-08-19 480-789-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2005-07-27 480-626-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-07-27 480-627-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-07-27 480-634-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-07-27 480-636-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-07-27 480-643-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-07-27 480-643-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-07-27 480-707-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-07-12 480-353-2XXX 2000–2999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7175 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.