AS7509 Hokkaido University 🇯🇵 JP
Announcing 3 prefixes, seen at the RIS collectors.
IPv4 prefixes
3
131,328 (513 × /24)
IPv6 prefixes
0
-
Upstreams
1
transit providers observed
Peers
0
settlement-free adjacencies
Downstreams
0
transit customers observed
Customer cone
0
ASes reachable through it
Registry and operator data
- AS number
- AS7509
- Name
- Hokkaido University
- Organisation
- Hokkaido University
- Country
- 🇯🇵 JP
- RIR
- APNIC
- Allocated
- 1997-03-03
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Announced prefixes
3 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 133.50.0.0/16 v4 | no ROA | 43 | 3800129077509 | 2026-09-18 |
| 133.87.0.0/16 v4 | no ROA | 43 | 3800129077509 | 2026-09-18 |
| 192.50.101.0/24 v4 | no ROA | 42 | 3800129077509 | 2026-09-18 |