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  3. AS104

AS104

University of Colorado at Boulder

COLORADO-AS
Organization
Title
University of Colorado at Boulder
Details
Regional Internet registry
ARIN
IP Addresses count
75,520
Coordinates
Summary
The organization University of Colorado at Boulder allocates 22 IP netblocks under the autonomous system number (ASN ) of 104. The regional internet registry (RIR ) for this ASN is ARIN. The country in which these IPs are located is United States of America (US), which is on #1 out of 249 countries by the total amount of ASNs allocated - 27,927.

AS104 has 2 peers, 2 upstreams and 0 downstreams with a total of 75,520 IP addresses.
IP Address ranges
Block Description IPs count
128.138.0.0/16 University of Colorado at Boulder 65,536
146.5.20.0/22 NASA Intergrated Services Network (NISN) 1,024
192.12.238.0/24 4458772 256
192.12.239.0/24 4458772 256
192.12.240.0/24 Ithaka (JSTOR) 256
192.12.241.0/24 University of Colorado (UNIVER-24) 256
192.12.242.0/24 4458772 256
192.12.243.0/24 4458772 256
192.12.245.0/24 University of Colorado (UNIVER-24) 256
192.12.246.0/24 4458772 256
198.11.16.0/20 University of Colorado - Boulder 4,096
198.59.7.0/24 Centurylink Communications 256
198.59.51.0/24 Centurylink Communications 256
198.59.52.0/24 Centurylink Communications 256
198.59.54.0/24 Centurylink Communications 256
198.59.55.0/24 Centurylink Communications 256
198.59.70.0/24 Centurylink Communications 256
198.59.81.0/24 UCB-2-Z 256
198.59.82.0/24 UCB-2-Z 256
198.59.83.0/24 UCB-2-Z 256
204.228.67.0/24 WESTNET-W4 256
204.228.80.0/24 Centurylink Communications 256
Peers
ASN Name IPs Count
AS209 CenturyLink Communications, LLC 20,797,184
AS14041 University Corporation for Atmospheric Research 262,656
Upstreams
ASN Name IPs Count
AS209 CenturyLink Communications, LLC 20,797,184
AS14041 University Corporation for Atmospheric Research 262,656
Downstreams
There are no downstreams for this ASN.
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