HomeASN LookupAS11975

AS11975

🇺🇸

WM - The College of William and Marye20f57cbf47aec4ff3b7037e47cd94bd

ARINassigned
Announced Prefixes (BGP)
9total
9 IPv40 IPv6
IPv4 Addresses ⓘ
Allocated (RIR)131,072
Announced (BGP)270,848
IPv6 Addresses ⓘ
Allocated (RIR)0
Announced (BGP)0
Prefix Limit (IPv4)
200
Prefix Limit (IPv6)
5
Country
🇺🇸 US
RIR
ARIN
Status
assigned
Allocated
2/18/1999

Announced Prefixes

(BGP)9
|
Prefix
RPKI
IRR
Last Seen
128.239.0.0/16
No ROA
RADB
5/25/2026
128.239.0.0/17
No ROA
RADB
5/25/2026
128.239.1.0/24
No ROA—5/25/2026
128.239.33.0/24
No ROA—5/25/2026
128.239.128.0/17
No ROA
RADB
5/25/2026
139.70.0.0/16
No ROA
RADB
5/25/2026
139.70.0.0/17
No ROA
RADB
5/25/2026
139.70.128.0/17
No ROA
RADB
5/25/2026
139.70.224.0/19
No ROA—5/25/2026

Allocated Prefixes

(RIR)2
Prefix
Country
RIR
Status
128.239.0.0/16🇺🇸 USARINallocated
139.70.0.0/16🇺🇸 USARINallocated
ASPA
No ASPA
External Links
ARIN WhoisHurricane Electric BGPRIPEstatPeeringDB
API
Open
GEThttps://api.ipctl.io/v1/asn/11975

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

curl -s "https://api.ipctl.io/v1/asn/11975" | jq