NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

5 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 520
NEW CINGULAR WIRELESS PCS, LLC 3
INTRADO COMMUNICATIONS, LLC 2
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
2023-08-17 520-602-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H TUCSON AZ
2023-08-17 520-602-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H TUCSON AZ
2023-08-17 520-602-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H TUCSON AZ
2023-08-17 520-606-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H TUCSON AZ
2023-08-17 520-658-2XXX 2000–2999Assigned ONVOY, LLC - AZ 630E TUCSON AZ
2023-08-11 520-435-0XXX 0000–0999Assigned ONVOY, LLC - AZ 630E WILLCOX AZ
2023-08-11 520-473-0XXX 0000–0999Assigned ONVOY, LLC - AZ 630E SIERRAVIST AZ
2023-08-11 520-681-0XXX 0000–0999Assigned ONVOY, LLC - AZ 630E NOGALES AZ
2023-08-11 520-683-3XXX 3000–3999Assigned ONVOY, LLC - AZ 630E CASAGRANDE AZ
2023-08-11 520-699-0XXX 0000–0999Assigned ONVOY, LLC - AZ 630E SIERRAVIST AZ
2023-08-11 520-702-5XXX 5000–5999Assigned ONVOY, LLC - AZ 630E DOUGLAS AZ
2023-08-10 520-660-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CASAGRANDE AZ
2023-08-10 520-660-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CASAGRANDE AZ
2023-08-10 520-677-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CASAGRANDE AZ
2023-08-10 520-677-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CASAGRANDE AZ
2023-08-10 520-680-0XXX 0000–0999Assigned TELNYX LLC 073H BISBEE AZ
2023-07-27 520-941-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-941-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-941-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-941-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-941-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-941-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-941-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-941-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-941-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-941-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-942-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-942-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-942-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-942-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-942-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-942-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-942-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-942-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-942-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-942-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-943-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-943-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-943-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-943-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-943-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-943-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-943-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-943-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-943-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-943-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-944-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-944-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-944-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST AZ
2023-07-27 520-944-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 SIERRAVIST 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.