HomeASN LookupAS11399

AS11399

🇺🇸

WILLIAMSCOLLEGE - Williams Collegec0f201ea28aee953f04c6951e8d50d3d

ARINassigned
Announced Prefixes (BGP)
7total
3 IPv44 IPv6
IPv4 Addresses ⓘ
Allocated (RIR)256
Announced (BGP)65,792
IPv6 Addresses ⓘ
Allocated (RIR)7.9×10^28
Announced (BGP)2.2×10^25
Prefix Limit (IPv4)
10
Prefix Limit (IPv6)
20
Country
🇺🇸 US
RIR
ARIN
Status
assigned
Allocated
8/5/1998

Announced Prefixes

(BGP)7
|
Prefix
RPKI
IRR
Last Seen
137.165.0.0/17
 Valid
ARINRADB
5/24/2026
137.165.128.0/17
 Valid
ARINRADB
5/24/2026
204.225.173.0/24
 Valid
ARINRADB
5/24/2026
2001:470:ed::/48
 Valid
ARINRADB
5/24/2026
2602:811:3000::/44
 Valid
ARINRADB
5/24/2026
2606:6b40:fff1::/48
 Valid
ARINRADB
5/24/2026
2606:6b40:fff2::/48
 Valid
ARINRADB
5/24/2026

Allocated Prefixes

(RIR)3
Prefix
Country
RIR
Status
204.225.173.0/24🇺🇸 USARINallocated
2602:811:3000::/44🇺🇸 USARINallocated
2606:6b40::/32🇺🇸 USARINallocated
ASPA
No ASPA
External Links
ARIN WhoisHurricane Electric BGPRIPEstatPeeringDB
API
Open
GEThttps://api.ipctl.io/v1/asn/11399

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

curl -s "https://api.ipctl.io/v1/asn/11399" | jq