AS131981 Takushoku University 🇯🇵 JP
Announcing 6 prefixes, seen at the RIS collectors.
IPv4 prefixes
6
131,072 (512 × /24)
IPv6 prefixes
0
-
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
- AS131981
- Name
- Takushoku University
- Organisation
- Takushoku University
- Country
- 🇯🇵 JP
- RIR
- APNIC
- Allocated
- 2011-08-04
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Announced prefixes
6 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 133.36.0.0/17 v4 | no ROA | 42 | 70182497131981 | 2026-09-18 |
| 133.36.0.0/18 v4 | no ROA | 43 | 380012907131981 | 2026-09-18 |
| 133.36.64.0/18 v4 | no ROA | 43 | 380012907131981 | 2026-09-18 |
| 133.36.128.0/17 v4 | no ROA | 42 | 70182497131981 | 2026-09-18 |
| 133.36.128.0/18 v4 | no ROA | 43 | 380012907131981 | 2026-09-18 |
| 133.36.192.0/18 v4 | no ROA | 43 | 380012907131981 | 2026-09-18 |