HomeASN LookupAS1742

AS1742

🇺🇸

HARVARD-UNIV - Harvard University2c8438ff5e93d4a88cf7217faf2d6b5c

ARINassigned
Announced Prefixes (BGP)
17total
13 IPv44 IPv6
IPv4 Addresses ⓘ
Allocated (RIR)197,376
Announced (BGP)204,544
IPv6 Addresses ⓘ
Allocated (RIR)8.4×10^28
Announced (BGP)8.4×10^28
Prefix Limit (IPv4)
200
Prefix Limit (IPv6)
20
Country
🇺🇸 US
RIR
ARIN
Status
assigned
Allocated
2/19/1992

Announced Prefixes

(BGP)17
|
Prefix
RPKI
IRR
Last Seen
65.112.0.0/20
 Valid
ARINRADB
5/15/2026
67.134.204.0/22
 Valid
ARINRADB
5/15/2026
128.103.0.0/16
 Valid
ARINRADB
5/15/2026
131.142.0.0/16
No ROA
RADB
5/15/2026
140.247.0.0/16
 Valid
ARINRADB
5/15/2026
140.247.111.0/24
 Valid
ARINRADB
5/15/2026
140.247.152.0/24
 Valid
ARINRADB
5/15/2026
140.247.174.0/24
 Valid
ARINRADB
5/15/2026
140.247.236.0/24
 Valid
ARINRADB
5/15/2026
192.5.66.0/24
 Valid
ARINRADB
5/15/2026
1–10 of 17
1 / 2

Allocated Prefixes

(RIR)9
Prefix
Country
RIR
Status
128.103.0.0/16🇺🇸 USARINallocated
131.142.0.0/16🇺🇸 USARINallocated
140.247.0.0/16🇺🇸 USARINallocated
192.5.66.0/24🇺🇸 USARINallocated
192.54.223.0/24🇺🇸 USARINallocated
192.131.102.0/24🇺🇸 USARINallocated
2602:fca9::/36🇺🇸 USARINallocated
2607:fb60::/32🇺🇸 USARINallocated
2620:32:8000::/48🇺🇸 USARINallocated
ASPA
No ASPA
External Links
ARIN WhoisHurricane Electric BGPRIPEstatPeeringDB
API
Open
GEThttps://api.ipctl.io/v1/asn/1742

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

curl -s "https://api.ipctl.io/v1/asn/1742" | jq