133.31.0.0/16

IPv4 prefix announced by AS55390 Tokyo University of Science

unknown RPKI

VALID announced

1 Recorded origin

Routing

Recorded origin: AS55390 Tokyo University of Science unknown
Observed origin (RIS): AS55390 TUSNET - Tokyo University of Science
Country: Japan

RPKI: rpki.cloudflare.com · 2026-06-17 · Routing: RIPEstat · 2026-06-18