CF1761131232585-tsm20251017082432

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Network 133.31.0.0/17
route: 133.31.0.0/16 descr: Tokyo University of Science 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601 Japan origin: AS55390 notify: support-infra@admin.tus.ac.jp mnt-by: MAINT-AS55390 changed: support-infra@admin.tus.ac.jp 20251002 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 133.31.0.0/17 descr: Tokyo University of Science 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601 Japan origin: AS55390 notify: support-infra@admin.tus.ac.jp mnt-by: MAINT-AS55390 changed: support-infra@admin.tus.ac.jp 20251002 source: JPIRR rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source 
Perform reverse DNS lookup as well as normal forward DNS. Check Autonomous System Numbers (ASNs) and BGP connections between Internet Service Providers.
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lhrmyWu CF johedugfp 2025-10-22