AS2501 The University of Tokyo 🇯🇵 JP
Announcing 6 prefixes, seen at the RIS collectors.
IPv4 prefixes
4
200,704 (784 × /24)
IPv6 prefixes
2
1 × /32
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
- AS2501
- Name
- The University of Tokyo
- Organisation
- UTnet
- Country
- 🇯🇵 JP
- RIR
- APNIC
- Allocated
- 2002-04-05
- Scope
- Not Disclosed
- PeeringDB
- net/32319
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 |
|---|---|---|---|---|
| 130.69.0.0/16 v4 | no ROA | 43 | 1763929072501 | 2026-09-18 |
| 133.11.0.0/16 v4 | no ROA | 43 | 1763929072501 | 2026-09-18 |
| 157.82.0.0/16 v4 | no ROA | 43 | 1763929072501 | 2026-09-18 |
| 192.51.208.0/20 v4 | no ROA | 43 | 1763929072501 | 2026-09-18 |
| 2404:d540::/32 v6 | no ROA | 33 | 3800129072501 | 2026-09-18 |
| 2404:d540:1::/48 v6 | no ROA | 32 | 3800129072501 | 2026-09-18 |