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
2009-07-17 480-243-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2009-07-17 480-243-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2009-07-17 480-243-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2009-07-16 480-339-0XXX 0000–0999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2009-07-02 480-412-0XXX 0000–0999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2009-07-02 480-412-1XXX 1000–1999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2009-07-02 480-412-2XXX 2000–2999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2009-07-02 480-412-3XXX 3000–3999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2009-07-02 480-412-4XXX 4000–4999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2009-07-02 480-412-5XXX 5000–5999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2009-07-02 480-412-6XXX 6000–6999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2009-07-02 480-412-7XXX 7000–7999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2009-07-02 480-412-8XXX 8000–8999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2009-07-02 480-412-9XXX 9000–9999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2009-06-24 480-478-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J PHOENIX AZ
2009-06-17 480-339-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2009-06-17 480-339-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2009-06-17 480-339-3XXX 3000–3999Assigned VONAGE AMERICA LLC 197D PHOENIX AZ
2009-06-17 480-339-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2009-06-17 480-339-5XXX 5000–5999Assigned VONAGE AMERICA LLC 197D PHOENIX AZ
2009-06-17 480-339-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2009-06-15 480-455-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J PHOENIX AZ
2009-06-11 480-717-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2009-06-11 480-717-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2009-06-11 480-717-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2009-06-11 480-717-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2009-06-09 480-245-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2009-06-09 480-245-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2009-06-09 480-320-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2009-06-09 480-320-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2009-06-09 480-320-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2009-05-15 480-245-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2009-05-15 480-245-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2009-05-15 480-318-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2009-05-15 480-318-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2009-05-14 480-320-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 PHOENIX AZ
2009-05-14 480-320-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 PHOENIX AZ
2009-05-14 480-320-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 PHOENIX AZ
2009-04-10 480-245-5XXX 5000–5999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2009-04-08 480-318-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2009-04-08 480-318-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2009-04-08 480-318-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2009-04-08 480-318-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2009-04-08 480-318-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2009-04-08 480-318-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2009-03-30 480-245-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2009-03-19 480-320-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2009-03-19 480-320-2XXX 2000–2999Assigned VONAGE AMERICA LLC 197D PHOENIX AZ
2009-03-19 480-320-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2009-03-19 480-320-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 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.