HomePrefix Lookup133.4.0.0/18

133.4.0.0/18

🇯🇵
IPv4APNICannouncedAS55384JAIST-EXP - Japan Advanced Institute of Science and TechnologyNo ROA
CIDR
133.4.0.0/18
IP Version
IPv4
Addresses
16.3K
Mask
/18 (255.255.192.0)
Country
🇯🇵 Japan
City
Chiyoda City
RIR
APNIC
Status
announced
Allocated
-

Announced BGP Routes

1 of 1 route
RPKI:
IRR:
PrefixOrigin ASRPKIIRRLast Seen
133.4.0.0/18AS55384JAIST-EXP - Japan Advanced Institute of Science and TechnologyNo ROA
RADB
5/30/2026

IRR Route Objects

1
OriginRegistryMaintainerModified
AS55384RADBMAINT-AS250011/13/2023
Origin ASN
AS55384
JAIST-EXP - Japan Advanced Institute of Science and Technology
Geolocation
Country🇯🇵JapanJP
RegionTokyo
CityChiyoda City
Coordinates35.6916, 139.7680 ↗
API
Open
GEThttps://api.ipctl.io/v1/prefix/133.4.0.0/18

Returns prefix allocation, BGP routes, and more-specific subnets.

curl -s "https://api.ipctl.io/v1/prefix/133.4.0.0/18" | jq
External Links
RIPEstat Hurricane Electric BGP