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ASN Lookup Tool
AS4 ISI-AS

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS4
Organisation
University of Southern California
Name
ISI-AS
Total IPv4 Addresses
65,536
Total IPv4 Prefixes
52
Total IPv6 Prefixes
22
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#3,020 out of 79,159
Registry
Arin
Registered Country
US flagUS
Registered Country Name
United States of America (the)
Registered Date
1984-02-22
Registration Last Change
2023-09-29
Receiving From
ASN
Organisation
AS174
US flagCogent Communications
AS55836
IN flagReliance Jio Infocomm Limited
AS9498
IN flagBharti Airtel Limited
AS4755
IN flagTata Communications Limited
AS226
US flagLos Nettos
Showing 5 of 14
Transit To
ASN
Organisation
AS2635
US flagAutomattic, Inc
AS147167
ID flagPT Modern Pulsa Investama Corporate / Direct Mem..
IPv4 Active Prefixes
PrefixRange FromRange To
43.240.64.0/2443.240.64.043.240.64.255
128.9.0.0/20128.9.0.0128.9.15.255
128.9.16.0/24128.9.16.0128.9.16.255
128.9.17.0/24128.9.17.0128.9.17.255
128.9.18.0/24128.9.18.0128.9.18.255
Showing 5 of 52
IPv6 Active Prefixes
PrefixRange FromRange To
2001:500:202::/482001:500:202::2001:500:202:ffff:ffff:ffff:ffff:ffff
2001:1878:401::/482001:1878:401::2001:1878:401:ffff:ffff:ffff:ffff:ffff
2001:1878:402::/482001:1878:402::2001:1878:402:ffff:ffff:ffff:ffff:ffff
2001:1878:403::/482001:1878:403::2001:1878:403:ffff:ffff:ffff:ffff:ffff
2001:1878:404::/482001:1878:404::2001:1878:404:ffff:ffff:ffff:ffff:ffff
Showing 5 of 22