HomeASN LookupAS4201

AS4201

🇺🇸

ORST-AS - Oregon State Universityb79b611d103f02ff691a9162c1e38917

ARINassigned
Announced Prefixes (BGP)
3total
2 IPv41 IPv6
IPv4 Addresses ⓘ
Allocated (RIR)65,792
Announced (BGP)65,792
IPv6 Addresses ⓘ
Allocated (RIR)3×10^26
Announced (BGP)3×10^26
Prefix Limit (IPv4)
100
Prefix Limit (IPv6)
5
Country
🇺🇸 US
RIR
ARIN
Status
assigned
Allocated
1/5/1995

Announced Prefixes

(BGP)3
|
Prefix
RPKI
IRR
Last Seen
128.193.0.0/16
No ROA
RADB
5/25/2026
199.201.139.0/24
No ROA
RADB
5/25/2026
2620:105:f000::/40
No ROA
RADB
5/25/2026

Allocated Prefixes

(RIR)3
Prefix
Country
RIR
Status
128.193.0.0/16🇺🇸 USARINallocated
199.201.139.0/24🇺🇸 USARINallocated
2620:105:f000::/40🇺🇸 USARINallocated
ASPA
No ASPA
External Links
ARIN WhoisHurricane Electric BGPRIPEstatPeeringDB
API
Open
GEThttps://api.ipctl.io/v1/asn/4201

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

curl -s "https://api.ipctl.io/v1/asn/4201" | jq