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ASN Lookup Tool
AS5653 UCSF

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS5653
Organisation
University of California San Francisco
Name
UCSF
Total IPv4 Addresses
196168
Total IPv4 Prefixes
59
Total IPv6 Prefixes
0
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#1,187 out of 76,293
Registry
Arin
Registered Country
US flag US
Registered Country Name
United States of America (the)
Registered Date
1995-07-27
Registration Last Change
2023-08-31
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..
AS6461
US flagZayo Bandwidth
AS2153
US flagCalifornia State University, Office of the Chanc..
IPv4 Active Prefixes

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

Prefix128.218.0.0/16
Range From128.218.0.0
Range To128.218.255.255
Prefix137.164.24.80/29
Range From137.164.24.80
Range To137.164.24.87
Prefix169.230.0.0/18
Range From169.230.0.0
Range To169.230.63.255
Prefix169.230.128.0/18
Range From169.230.128.0
Range To169.230.191.255
Prefix169.230.192.0/19
Range From169.230.192.0
Range To169.230.223.255
Showing 5 of 59
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.