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
2007-05-09 480-306-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2007-05-09 480-306-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2007-05-09 480-306-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2007-05-09 480-306-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2007-05-09 480-309-5XXX 5000–5999Assigned METROPCS, INC. 5562 PHOENIX AZ
2007-05-09 480-309-6XXX 6000–6999Assigned METROPCS, INC. 5562 PHOENIX AZ
2007-05-09 480-309-7XXX 7000–7999Assigned METROPCS, INC. 5562 PHOENIX AZ
2007-05-09 480-309-8XXX 8000–8999Assigned METROPCS, INC. 5562 PHOENIX AZ
2007-05-09 480-309-9XXX 9000–9999Assigned METROPCS, INC. 5562 PHOENIX AZ
2007-05-09 480-310-2XXX 2000–2999Assigned METROPCS, INC. 5562 PHOENIX AZ
2007-05-09 480-310-3XXX 3000–3999Assigned METROPCS, INC. 5562 PHOENIX AZ
2007-05-09 480-310-4XXX 4000–4999Assigned METROPCS, INC. 5562 PHOENIX AZ
2007-05-09 480-310-5XXX 5000–5999Assigned METROPCS, INC. 5562 PHOENIX AZ
2007-05-07 480-304-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2007-05-07 480-304-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2007-05-07 480-304-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2007-05-07 480-304-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2007-05-07 480-304-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2007-05-07 480-304-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2007-05-07 480-304-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2007-05-07 480-305-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2007-05-07 480-305-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2007-05-07 480-406-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2007-05-07 480-760-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2007-05-02 480-305-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2007-05-01 480-305-7XXX 7000–7999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7175 PHOENIX AZ
2007-05-01 480-305-8XXX 8000–8999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7175 PHOENIX AZ
2007-05-01 480-310-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-05-01 480-310-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-04-30 480-305-9XXX 9000–9999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7175 PHOENIX AZ
2007-04-17 480-305-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-04-17 480-305-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-04-13 480-284-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-04-13 480-304-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-04-13 480-304-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-04-13 480-374-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-04-13 480-374-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2007-04-10 480-284-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2007-04-10 480-284-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2007-04-10 480-284-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2007-04-10 480-284-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2007-04-10 480-284-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2007-04-04 480-374-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2007-04-04 480-374-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2007-04-04 480-374-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2007-04-04 480-374-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2007-03-26 480-309-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-03-26 480-309-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-03-26 480-309-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2007-03-26 480-309-3XXX 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.