133.69.167.248/30 The University of Tokyo Interfaculty Initiative in Information Studies
Announced by AS45688 The University of Tokyo Interfaculty Initiative in Information Studies. RPKI not found Seen by 0 of our 5 looking glass sessions.
Summary
What the table says about 133.69.167.248/30
Prefix
Origin
AS45688 UT-NSRG
RPKI
RPKI not found
Size
4 addresses
Less specific
More specifics
0
IRR route objects
0 exact, 2 covering
In RouteViews
2026-10-12 20:02 UTC
RPKI
Route origin authorizations
No ROA covers this prefix, so RPKI has nothing to say about who may originate it. Validate another origin.
IRR
Route objects
Registered in the IRR for this prefix and the ones covering it. Look it up live.
| Route | Origin | Source | Description | Maintained by |
|---|---|---|---|---|
| 133.69.160.0/19 covering | AS45688 UT-NSRG | JPIRR | Engineering School, The University of Tokyo. X-Keiro : noc@nakao-lab.org | MAINT-AS2523 |
| 133.69.0.0/16 covering | AS2523 ITRC-NET | JPIRR | ITRC X-Keiro: noc@inet.media.kyoto-u.ac.jp | MAINT-AS2523 |
Less specific
Covering prefixes
Announced prefixes that contain this one, most specific first.