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ASN Lookup Tool
AS131 UCSB-NET-AS

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS131
Organisation
University of California, Santa Barbara
Name
UCSB-NET-AS
Total IPv4 Addresses
132,100
Total IPv4 Prefixes
7
Total IPv6 Prefixes
3
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#1,568 out of 79,092
Registry
Arin
Registered Country
US flagUS
Registered Country Name
United States of America (the)
Registered Date
1987-09-30
Registration Last Change
2024-04-26
Receiving From

The list of active Autonomous Systems (ASs) which send traffic to that ASN.

ASN
Organisation
AS2152
US flagCENIC
AS2153
US flagCENIC
IPv4 Active Prefixes

This provides the list of IPv4 address space routes/prefixes currently announced on Border Gateway Protocol (BGP).

PrefixRange FromRange To
128.111.0.0/16128.111.0.0128.111.255.255
137.164.23.8/31137.164.23.8137.164.23.9
137.164.23.90/31137.164.23.90137.164.23.91
169.231.0.0/16169.231.0.0169.231.255.255
192.35.222.0/24192.35.222.0192.35.222.255
Showing 5 of 7
IPv6 Active Prefixes
PrefixRange FromRange To
2607:f378::/322607:f378::2607:f378:ffff:ffff:ffff:ffff:ffff:ffff
2607:f380:1::118:9a41:7080/1232607:f380:1::118:9a41:70802607:f380:1::118:9a41:709f
2607:f380:1::118:9a41:75a0/1232607:f380:1::118:9a41:75a02607:f380:1::118:9a41:75bf