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
2018-11-05 480-542-5XXX 5000–5999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2018-11-05 480-542-6XXX 6000–6999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2018-11-05 480-542-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2018-11-05 480-542-8XXX 8000–8999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2018-11-05 480-542-9XXX 9000–9999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2018-11-05 480-877-7XXX 7000–7999Assigned QWEST CORPORATION 9636 PHOENIX AZ
2018-10-31 480-877-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2018-10-31 480-877-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHOENIX AZ
2018-10-18 480-531-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2018-10-18 480-645-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2018-10-18 480-877-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2018-10-18 480-877-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2018-10-10 480-645-7XXX 7000–7999Assigned METROPCS, INC. 5562 PHOENIX AZ
2018-10-10 480-645-8XXX 8000–8999Assigned METROPCS, INC. 5562 PHOENIX AZ
2018-10-02 480-530-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2018-10-02 480-530-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2018-09-25 480-536-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2018-09-25 480-536-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2018-09-25 480-536-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2018-09-25 480-536-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2018-09-25 480-536-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2018-09-25 480-536-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2018-09-17 480-531-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2018-09-17 480-531-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2018-09-17 480-531-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2018-09-12 480-877-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 PHOENIX AZ
2018-09-12 480-877-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 PHOENIX AZ
2018-09-12 480-877-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 PHOENIX AZ
2018-09-06 480-514-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-09-06 480-514-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-09-06 480-514-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-09-06 480-514-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-09-06 480-514-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-09-06 480-514-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-09-06 480-514-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-09-06 480-530-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-09-06 480-531-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2018-09-04 480-530-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PHOENIX AZ
2018-08-27 480-531-5XXX 5000–5999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2018-08-27 480-531-6XXX 6000–6999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2018-08-27 480-531-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2018-08-27 480-531-8XXX 8000–8999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2018-08-27 480-531-9XXX 9000–9999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2018-08-22 480-530-5XXX 5000–5999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2018-08-22 480-530-6XXX 6000–6999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2018-08-22 480-530-7XXX 7000–7999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2018-08-22 480-530-8XXX 8000–8999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2018-08-22 480-530-9XXX 9000–9999Assigned ONVOY, LLC - AZ 630E PHOENIX AZ
2018-08-20 480-506-0XXX 0000–0999Assigned PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PHOENIX AZ
2018-08-17 480-530-0XXX 0000–0999Assigned VOIP INNOVATIONS, LLC 597F 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.