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
2008-02-15 480-440-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2008-02-15 480-440-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2008-02-15 480-440-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2008-02-15 480-440-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2008-02-15 480-440-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2008-02-15 480-440-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2008-02-15 480-559-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2008-02-15 480-559-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2008-02-15 480-559-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2008-02-15 480-559-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2008-02-14 480-389-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2008-02-14 480-399-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2008-02-14 480-399-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2008-02-14 480-399-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2008-02-14 480-399-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2008-02-14 480-399-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2008-02-14 480-399-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2008-02-14 480-399-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2008-02-14 480-399-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2008-02-14 480-399-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2008-02-14 480-399-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2008-02-12 480-389-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2008-02-12 480-389-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2008-02-12 480-389-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2008-01-29 480-636-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2008-01-25 480-636-5XXX 5000–5999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7175 PHOENIX AZ
2008-01-15 480-295-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2008-01-15 480-295-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2008-01-15 480-295-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2008-01-15 480-295-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2008-01-15 480-295-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2008-01-07 480-297-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2008-01-07 480-297-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2008-01-07 480-335-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-12-26 480-297-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-11-20 480-295-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-11-20 480-307-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-11-16 480-295-3XXX 3000–3999Assigned LEVEL 3 TELECOM OF ARIZONA, LLC - AZ 7552 PHOENIX AZ
2007-11-16 480-295-4XXX 4000–4999Assigned LEVEL 3 TELECOM OF ARIZONA, LLC - AZ 7552 PHOENIX AZ
2007-11-14 480-338-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-11-14 480-338-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-11-14 480-338-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-11-14 480-338-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-11-14 480-338-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-11-14 480-338-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-10-30 480-307-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-10-15 480-338-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-10-15 480-338-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-10-15 480-338-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-10-15 480-338-3XXX 3000–3999Assigned 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.