AS38635 Keio University 🇯🇵 JP
Announcing 4 prefixes, seen at the RIS collectors.
IPv4 prefixes
2
131,072 (512 × /24)
IPv6 prefixes
2
2 × /48
Upstreams
2
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
- AS38635
- Name
- Keio University
- Organisation
- Keio University
- Country
- 🇯🇵 JP
- RIR
- APNIC
- Allocated
- 2007-08-20
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Announced prefixes
4 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 131.113.0.0/16 v4 | no ROA | 44 | 17639290738635 | 2026-09-18 |
| 133.27.0.0/16 v4 | no ROA | 44 | 17639290738635 | 2026-09-18 |
| 2001:df0:eb::/48 v6 | no ROA | 32 | 17639290738635 | 2026-09-18 |
| 2001:df2:c900::/48 v6 | no ROA | 32 | 17639290738635 | 2026-09-18 |