AS Name
COLORADO-AS
Org Name
University of Colorado at Boulder
Registry Region
United States
Looking Glass
IPv4Prefixes

23

IPv6Prefixes

2

IPv4 NUMs

75,520

IPv6 NUMs(/64)

4,295,032,832

75,520 IPv4 Addresses
CIDR Description IP Num
128.138.0.0/24 University of Colorado 256
128.138.0.0/16 University of Colorado 65536
146.5.20.0/22 National Solar Observatory 1024
192.12.238.0/24 University of Colorado 256
192.12.239.0/24 University of Colorado 256
192.12.240.0/24 University of Colorado 256
192.12.241.0/24 University of Colorado 256
192.12.242.0/24 University of Colorado 256
192.12.243.0/24 University of Colorado 256
192.12.245.0/24 University of Colorado 256
192.12.246.0/24 University of Colorado 256
198.11.16.0/20 University of Colorado Boulder 4096
198.59.7.0/24 University of Colorado Boulder 256
198.59.51.0/24 University of Colorado Boulder 256
198.59.52.0/24 University of Colorado Boulder 256
198.59.54.0/24 University of Colorado Boulder 256
198.59.55.0/24 University of Colorado Boulder 256
198.59.70.0/24 University of Colorado Boulder 256
198.59.81.0/24 University of Colorado Boulder 256
198.59.82.0/24 University of Colorado Boulder 256
198.59.83.0/24 University of Colorado Boulder 256
204.228.67.0/24 WestNet, Inc. 256
204.228.80.0/24 University of Colorado Boulder 256
CIDR Description IP NUMs(prefix /64)
2001:468:501::/48 University Corporation for Atmospheric Research 65536
2620:18f::/32 University of Colorado Boulder 4294967296
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS209 CENTURYLINK-US-LEGACY-QWEST - CenturyLink Communications, LLC, US United States 20,808,192 1,117,765,697,536 IPv4 IPv4
AS14041 AS14041 - University Corporation for Atmospheric Research, US United States 262,656 16,777,216 IPv4 IPv4 IPv6 IPv6
IP Address Domain NUMs Domains
128.138.1.11 1 hippo.colorado.edu
128.138.29.28 9 boulderinterns.com
128.138.29.49 2 housing.colorado.edu
128.138.29.88 2 confreg.colorado.edu
128.138.29.188 1 hdsprojects.colorado.edu
128.138.29.193 1 oncampus.colorado.edu
128.138.62.116 1 mail.mathematrader.com
128.138.64.73 1 brandonroemer.com
128.138.67.14 1 burridgecenter.colorado.edu
128.138.67.15 1 leeds-faculty.colorado.edu
ASNumber:       104
ASName:         COLORADO-AS
ASHandle:       AS104
RegDate:        1987-04-09
Updated:        2019-06-25    
Ref:            https://rdap.arin.net/registry/autnum/104


OrgName:        University of Colorado at Boulder
OrgId:          UCAB-2
Address:        Campus Box 455
City:           Boulder
StateProv:      CO
PostalCode:     80309-0455
Country:        US
RegDate:        1987-04-09
Updated:        2019-06-25
Ref:            https://rdap.arin.net/registry/entity/UCAB-2


OrgAbuseHandle: ABUSE306-ARIN
OrgAbuseName:   Abuse
OrgAbusePhone:  +1-303-735-4357 
OrgAbuseEmail:  [email protected]
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE306-ARIN

OrgTechHandle: CUBOU-ARIN
OrgTechName:   CUBoulder
OrgTechPhone:  +1-303-735-4357 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/CUBOU-ARIN

RTechHandle: CUBOU-ARIN
RTechName:   CUBoulder
RTechPhone:  +1-303-735-4357 
RTechEmail:  [email protected]
RTechRef:    https://rdap.arin.net/registry/entity/CUBOU-ARIN

RAbuseHandle: ABUSE306-ARIN
RAbuseName:   Abuse
RAbusePhone:  +1-303-735-4357 
RAbuseEmail:  [email protected]
RAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE306-ARIN