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
2010-10-07 480-719-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2010-10-07 480-719-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2010-10-07 480-719-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2010-10-07 480-719-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2010-10-07 480-719-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2010-10-07 480-719-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2010-10-07 480-719-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2010-10-07 480-719-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2010-10-06 480-409-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-10-06 480-409-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-10-06 480-409-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-10-06 480-409-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-10-06 480-409-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-10-06 480-409-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-10-06 480-409-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-10-06 480-420-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-10-06 480-420-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-10-06 480-420-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-10-06 480-420-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-10-06 480-420-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-10-06 480-420-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-10-06 480-420-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-10-06 480-428-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PHOENIX AZ
2010-10-06 480-719-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-09-28 480-420-1XXX 1000–1999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7175 PHOENIX AZ
2010-09-28 480-420-2XXX 2000–2999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7175 PHOENIX AZ
2010-09-24 480-336-9XXX 9000–9999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2010-09-13 480-336-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J PHOENIX AZ
2010-08-27 480-409-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2010-08-27 480-409-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2010-08-18 480-420-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 PHOENIX AZ
2010-08-18 480-719-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2010-08-11 480-409-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 PHOENIX AZ
2010-08-09 480-336-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2010-07-02 480-265-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2010-07-02 480-265-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2010-07-02 480-466-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2010-06-23 480-265-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2010-06-23 480-265-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2010-06-23 480-265-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2010-06-21 480-336-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2010-06-21 480-336-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2010-06-21 480-336-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2010-06-21 480-336-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2010-06-21 480-336-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2010-06-21 480-336-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2010-06-21 480-336-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2010-06-16 480-265-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2010-06-16 480-265-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2010-06-16 480-265-4XXX 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.