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ASN Lookup Tool
AS12145 COLORADOSTATEUNIV

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS12145
Organisation
Colorado State University
Name
COLORADOSTATEUNIV
Total IPv4 Addresses
81664
Total IPv4 Prefixes
9
Total IPv6 Prefixes
0
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#2,249 out of 77,433
Registry
Arin
Registered Country
US flag US
Registered Country Name
United States of America (the)
Registered Date
1999-04-06
Registration Last Change
2022-07-14
Receiving From

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

ASN
Organisation
AS14041
US flagUniversity Corporation for Atmospheric Research
Transit To

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

 

ASN
Organisation
AS54060
US flagPoudre School District R-1
AS394748
US flagCity of Fort Collins
AS31991
US flagPlatte River Power Authority
AS54669
US flagLarimer County Government
AS25825
US flagPoudre Valley Health Care, Inc.
IPv4 Active Prefixes

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

Prefix129.19.0.0/23
Range From129.19.0.0
Range To129.19.1.255
Prefix129.19.2.0/24
Range From129.19.2.0
Range To129.19.2.255
Prefix129.19.3.0/24
Range From129.19.3.0
Range To129.19.3.255
Prefix129.19.4.0/23
Range From129.19.4.0
Range To129.19.5.255
Prefix129.19.7.0/24
Range From129.19.7.0
Range To129.19.7.255
Showing 5 of 9
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.