NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

1 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2023-01-30 480-942-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PHOENIX AZ
2023-01-11 480-931-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2023-01-11 480-931-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2023-01-11 480-942-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2023-01-11 480-942-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2023-01-11 480-942-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2023-01-11 480-942-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2023-01-11 480-942-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2023-01-11 480-942-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2023-01-11 480-942-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2023-01-11 480-942-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2023-01-06 480-931-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2023-01-06 480-934-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2023-01-06 480-934-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2023-01-06 480-934-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2023-01-06 480-934-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2023-01-06 480-934-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2023-01-06 480-934-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2023-01-06 480-934-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2023-01-06 480-934-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2023-01-06 480-934-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2022-12-15 480-934-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2022-12-06 480-932-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2022-12-06 480-932-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2022-12-06 480-932-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2022-12-06 480-932-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2022-12-06 480-932-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2022-12-06 480-932-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2022-12-06 480-932-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2022-12-06 480-932-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2022-12-06 480-932-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2022-12-06 480-932-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2022-12-02 480-520-0XXX 0000–0999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2022-12-02 480-520-1XXX 1000–1999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2022-12-02 480-520-2XXX 2000–2999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2022-12-02 480-520-3XXX 3000–3999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2022-12-02 480-520-4XXX 4000–4999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2022-12-02 480-520-5XXX 5000–5999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2022-12-02 480-520-6XXX 6000–6999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2022-12-02 480-520-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2022-12-02 480-520-8XXX 8000–8999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2022-12-02 480-520-9XXX 9000–9999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2022-12-01 480-856-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2022-11-23 480-931-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2022-11-23 480-931-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2022-11-23 480-931-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2022-11-23 480-931-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2022-11-23 480-931-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2022-11-23 480-931-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2022-11-22 480-919-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.