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ASN Lookup Tool
AS1742 HARVARD-UNIV

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS1742
Organisation
Harvard University
Name
HARVARD-UNIV
Total IPv4 Addresses
203,776
Total IPv4 Prefixes
50
Total IPv6 Prefixes
17
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#1,110 out of 79,135
Registry
Arin
Registered Country
US flagUS
Registered Country Name
United States of America (the)
Registered Date
Registration Last Change
2023-12-21
Receiving From
ASN
Organisation
AS396450
US flagInternet2
AS3356
US flagLevel 3 Parent, LLC
AS174
US flagCogent Communications, LLC
AS10578
US flagHarvard University
AS11537
US flagInternet2
Showing 5 of 6
Transit To
ASN
Organisation
AS40127
US flagLongwood Medical and Academic Area (LMA)
AS13315
US flagHarvard Business School
IPv4 Active Prefixes
PrefixRange FromRange To
65.112.0.0/2065.112.0.065.112.15.255
67.134.204.0/2267.134.204.067.134.207.255
128.103.0.0/17128.103.0.0128.103.127.255
128.103.128.0/18128.103.128.0128.103.191.255
128.103.192.0/21128.103.192.0128.103.199.255
Showing 5 of 50
IPv6 Active Prefixes
PrefixRange FromRange To
2602:fca9::/362602:fca9::2602:fca9:fff:ffff:ffff:ffff:ffff:ffff
2607:fb60::/352607:fb60::2607:fb60:1fff:ffff:ffff:ffff:ffff:ffff
2607:fb60:2000::/382607:fb60:2000::2607:fb60:23ff:ffff:ffff:ffff:ffff:ffff
2607:fb60:2400::/462607:fb60:2400::2607:fb60:2403:ffff:ffff:ffff:ffff:ffff
2607:fb60:2404::/462607:fb60:2404::2607:fb60:2407:ffff:ffff:ffff:ffff:ffff
Showing 5 of 17