HomeASN LookupAS37917

AS37917

UTINS - University of Tsukuba

Announced Prefixes (BGP)
3total
3 IPv40 IPv6
IPv4 Addresses ⓘ
Allocated (RIR)66,560
Announced (BGP)132,096
IPv6 Addresses ⓘ
Allocated (RIR)0
Announced (BGP)0
Prefix Limit (IPv4)
100
Prefix Limit (IPv6)
5
Allocated
—

Announced Prefixes

(BGP)3
|
Prefix
RPKI
IRR
Last Seen
130.158.0.0/16
No ROA—5/25/2026
133.51.0.0/16
No ROA—5/25/2026
163.220.252.0/22
No ROA—5/25/2026

Allocated Prefixes

(RIR)2
Prefix
Country
RIR
Status
130.158.0.0/16🇯🇵 JPAPNICallocated
163.220.252.0/22🇯🇵 JPAPNICallocated
ASPA
No ASPA
External Links
Hurricane Electric BGPRIPEstatPeeringDB
API
Open
GEThttps://api.ipctl.io/v1/asn/37917

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/37917" | jq