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
2018-08-13 480-514-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 PHOENIX AZ
2018-08-13 480-514-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 PHOENIX AZ
2018-08-13 480-514-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 PHOENIX AZ
2018-08-08 480-506-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 PHOENIX AZ
2018-08-07 480-506-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 PHOENIX AZ
2018-08-07 480-506-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 PHOENIX AZ
2018-08-06 480-506-4XXX 4000–4999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2018-08-06 480-506-5XXX 5000–5999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2018-07-12 480-506-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-07-12 480-506-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-07-12 480-506-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-07-12 480-506-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-07-09 480-770-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-07-09 480-936-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-07-09 480-936-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-07-09 480-977-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-07-09 480-977-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-07-09 480-977-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-06-26 480-977-1XXX 1000–1999Assigned RE-INVENT TELECOM, LLC - AZ 663G PHOENIX AZ
2018-06-19 480-770-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2018-06-19 480-770-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2018-06-13 480-977-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2018-06-04 480-881-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2018-06-04 480-881-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2018-06-04 480-881-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2018-06-04 480-881-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2018-06-04 480-881-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2018-06-04 480-881-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2018-06-04 480-881-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2018-06-04 480-881-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2018-06-04 480-881-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2018-06-04 480-881-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2018-06-04 480-977-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 PHOENIX AZ
2018-06-01 480-977-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 PHOENIX AZ
2018-05-23 480-687-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2018-05-23 480-687-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2018-05-23 480-687-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2018-05-23 480-687-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2018-05-23 480-687-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2018-05-23 480-687-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2018-05-23 480-687-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2018-05-23 480-687-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2018-05-23 480-687-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J PHOENIX AZ
2018-05-17 480-880-0XXX 0000–0999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2018-05-17 480-880-1XXX 1000–1999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2018-05-17 480-880-2XXX 2000–2999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2018-05-17 480-880-3XXX 3000–3999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2018-05-17 480-880-4XXX 4000–4999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2018-05-17 480-880-5XXX 5000–5999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2018-05-17 480-880-6XXX 6000–6999Assigned ONVOY, LLC - AZ 630E 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.