HomeASN LookupAS103

AS103

🇺🇸

NWU-AS - Northwestern University03772d84e56be60a829c37754bcae497

ARINassigned
Announced Prefixes (BGP)
29total
28 IPv41 IPv6
IPv4 Addresses ⓘ
Allocated (RIR)83,968
Announced (BGP)151,040
IPv6 Addresses ⓘ
Allocated (RIR)0
Announced (BGP)1.5×10^26
Prefix Limit (IPv4)
100
Prefix Limit (IPv6)
5
Country
🇺🇸 US
RIR
ARIN
Status
assigned
Allocated
4/9/1987

Announced Prefixes

(BGP)29
|
Prefix
RPKI
IRR
Last Seen
8.28.178.0/23
No ROA
RADB
5/22/2026
8.30.248.0/22
No ROA
RADB
5/22/2026
38.124.97.0/24
No ROA
RADB
5/22/2026
129.105.0.0/16
No ROA
RADB
5/22/2026
165.124.0.0/17
No ROA
RADB
5/22/2026
165.124.17.0/24
No ROA—5/22/2026
165.124.128.0/19
No ROA
RADB
5/22/2026
165.124.149.0/24
No ROA—5/22/2026
165.124.160.0/20
No ROA
RADB
5/22/2026
165.124.176.0/21
No ROA
RADB
5/22/2026
1–10 of 29
1 / 3

Allocated Prefixes

(RIR)8
Prefix
Country
RIR
Status
129.105.0.0/16🇺🇸 USARINallocated
192.5.143.0/24🇺🇸 USARINallocated
192.26.85.0/24🇺🇸 USARINallocated
192.31.253.0/24🇺🇸 USARINallocated
199.74.64.0/18🇺🇸 USARINallocated
199.249.165.0/24🇺🇸 USARINallocated
199.249.166.0/23🇺🇸 USARINallocated
199.249.168.0/23🇺🇸 USARINallocated
ASPA
No ASPA
External Links
ARIN WhoisHurricane Electric BGPRIPEstatPeeringDB
API
Open
GEThttps://api.ipctl.io/v1/asn/103

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

curl -s "https://api.ipctl.io/v1/asn/103" | jq