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ASN Lookup Tool
AS7377 UCSD

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS7377
Organisation
University of California, San Diego
Name
UCSD
Total IPv4 Addresses
12165638
Total IPv4 Prefixes
812
Total IPv6 Prefixes
33
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#41 out of 76,379
Registry
Arin
Registered Country
US flag US
Registered Country Name
United States of America (the)
Registered Date
1996-11-25
Registration Last Change
2016-01-15
Receiving From

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

ASN
Organisation
AS2152
US flagCalifornia State University, Office of the Chanc..
AS2153
US flagCalifornia State University, Office of the Chanc..
Transit To

The list of active Autonomous Systems (ASs) which receive traffic from that ASN.

 

ASN
Organisation
AS26397
US flagThe Regents of the University of California - Un..
IPv4 Active Prefixes

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

Prefix44.0.0.0/16
Range From44.0.0.0
Range To44.0.255.255
Prefix44.1.0.0/24
Range From44.1.0.0
Range To44.1.0.255
Prefix44.1.2.0/23
Range From44.1.2.0
Range To44.1.3.255
Prefix44.1.4.0/22
Range From44.1.4.0
Range To44.1.7.255
Prefix44.1.8.0/21
Range From44.1.8.0
Range To44.1.15.255
Showing 5 of 812
IPv6 Active Prefixes
Prefix2001:48d0:c000::/34
Range From2001:48d0:c000::
Range To2001:48d0:ffff:ffff:ffff:ffff:ffff:ffff
Prefix2607:f720::/36
Range From2607:f720::
Range To2607:f720:fff:ffff:ffff:ffff:ffff:ffff
Prefix2607:f720:1000::/38
Range From2607:f720:1000::
Range To2607:f720:13ff:ffff:ffff:ffff:ffff:ffff
Prefix2607:f720:1400::/39
Range From2607:f720:1400::
Range To2607:f720:15ff:ffff:ffff:ffff:ffff:ffff
Prefix2607:f720:1600::/40
Range From2607:f720:1600::
Range To2607:f720:16ff:ffff:ffff:ffff:ffff:ffff
Showing 5 of 33
Autonomous System (AS) is a network (or collection of networks) that are all managed and supervised by a single entity or organisation. This tool provides a comprehensive ownership and connectivity report for any given AS number.