AS104 University of Colorado at Boulder

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AS104 – University of Colorado at Boulder

AS Number	104
AS Name	COLORADO-AS
Organization	University of Colorado at Boulder(ucab-2)
Country	US
Website	colorado.edu
Number of IPv4 Routes	20
Number of IPv6 Routes	2
ASN type	EDUCATION
Registry	ARIN
Date Allocated	2019-06-25T00:00

IP Ranges

Route	Origin	Origin Name	ISP	# IPs
198.59.82.0/24	AS104	University of Colorado at Boulder	University of Colorado Boulder	256
198.11.16.0/20	AS104	University of Colorado at Boulder	University of Colorado Boulder	4096
192.12.245.0/24	AS104	University of Colorado at Boulder	University of Colorado	256
192.12.241.0/24	AS104	University of Colorado at Boulder	University of Colorado	256
204.228.80.0/24	AS104	University of Colorado at Boulder	University of Colorado Boulder	256
146.5.20.0/22	AS104	University of Colorado at Boulder	National Solar Observatory	1024
198.59.51.0/24	AS104	University of Colorado at Boulder	University of Colorado Boulder	256
198.59.83.0/24	AS104	University of Colorado at Boulder	University of Colorado Boulder	256
198.59.70.0/24	AS104	University of Colorado at Boulder	University of Colorado Boulder	256
buy plan	AS104	University of Colorado at Boulder	University of Colorado Boulder	16384
buy plan	AS104	University of Colorado at Boulder	University of Colorado Boulder	256
buy plan	AS104	University of Colorado at Boulder	University of Colorado	256
buy plan	AS104	University of Colorado at Boulder	University Corporation for Atmospheric Research	~1×10²⁴
buy plan	AS104	University of Colorado at Boulder	University of Colorado	256

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Raw Whois Response

                                  #
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


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:  abuse@colorado.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE306-ARIN

OrgTechHandle: CUBOU-ARIN
OrgTechName:   CUBoulder
OrgTechPhone:  +1-303-735-4357 
OrgTechEmail:  arinadmin@colorado.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/CUBOU-ARIN

RTechHandle: CUBOU-ARIN
RTechName:   CUBoulder
RTechPhone:  +1-303-735-4357 
RTechEmail:  arinadmin@colorado.edu
RTechRef:    https://rdap.arin.net/registry/entity/CUBOU-ARIN

RAbuseHandle: ABUSE306-ARIN
RAbuseName:   Abuse
RAbusePhone:  +1-303-735-4357 
RAbuseEmail:  abuse@colorado.edu
RAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE306-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#