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
2021-06-30 480-746-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2021-06-30 480-746-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2021-06-30 480-746-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2021-06-14 480-790-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2021-06-14 480-790-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2021-06-14 480-790-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2021-06-14 480-790-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2021-06-10 480-791-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2021-05-27 480-791-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2021-05-27 480-791-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2021-05-27 480-791-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2021-05-27 480-791-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2021-05-27 480-791-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2021-05-27 480-791-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2021-05-27 480-791-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2021-05-26 480-769-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2021-05-26 480-769-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2021-05-26 480-769-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2021-05-26 480-769-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2021-05-26 480-769-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2021-05-26 480-803-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2021-05-26 480-803-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2021-05-26 480-803-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2021-05-26 480-803-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2021-05-26 480-803-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2021-05-26 480-803-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2021-05-26 480-803-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2021-05-26 480-803-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2021-05-21 480-944-0XXX 0000–0999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2021-05-21 480-944-1XXX 1000–1999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2021-05-21 480-944-2XXX 2000–2999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2021-05-21 480-944-3XXX 3000–3999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2021-05-21 480-944-4XXX 4000–4999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2021-05-21 480-944-5XXX 5000–5999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2021-05-21 480-944-6XXX 6000–6999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2021-05-21 480-944-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2021-05-21 480-944-8XXX 8000–8999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2021-05-21 480-944-9XXX 9000–9999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2021-05-20 480-803-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2021-05-20 480-803-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2021-04-30 480-762-0XXX 0000–0999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PHOENIX AZ
2021-04-22 480-762-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H PHOENIX AZ
2021-04-22 480-762-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H PHOENIX AZ
2021-04-22 480-762-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H PHOENIX AZ
2021-04-09 480-679-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2021-04-09 480-679-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2021-04-09 480-679-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2021-04-09 480-679-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2021-04-09 480-679-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2021-04-09 480-679-6XXX 6000–6999Assigned 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.