128.138.129.52
COLORADO-AS, US


Seen 39 times between July 30th, 2019 and March 31st, 2022.


General Info Open in Search

Geo Boulder, Colorado, United States (US) —
AS AS104 - COLORADO-AS, US
Note: An IP might be announced by multiple ASs. This is not shown.
Registrar ARIN
Route 128.138.0.0/16 (Route of ASN)

Recent Screenshots

Direct hits
Summary of pages hosted on this IP

Domains www.colorado.edu | 31x

Recent scans (31 total) Show all

URL Age
www.colorado.edu/admissions/2022/03/29/your-guide-to-admitted-student-day-2022 3 years
www.colorado.edu/admissions/2022/03/29/your-guide-to-admitted-student-day-2022 3 years
www.colorado.edu/admissions 3 years
www.colorado.edu/admissions/2022/03/29/your-guide-to-admitted-student-day-2022 3 years
www.colorado.edu/admissions 3 years

Incoming hits
Summary of pages that talked to this IP

ASNs AS14618 | 2x AS46606 | 2x AS13335 | 1x AS16509 | 1x AS26347 | 1x AS36351 | 1x

IPs 50.87.253.26 | 2x 52.207.136.242 | 1x 52.219.100.216 | 1x 54.197.131.167 | 1x 69.163.155.167 | 1x 169.62.97.98 | 1x 2606:4700:3033::6815:835 | 1x

Domains anrcleanteam.com | 2x nypost.my.id | 1x oit.colorado.edu | 1x siliconflatirons.org | 1x websupport.colorado.edu | 1x www-colorado-edu-user-login.s3.us-east-2.amazonaws.com | 1x www.jimmybuffs.com | 1x

Countries US | 8x

Recent scans (8 total) Show all

URL Age
siliconflatirons.org 3 years
nypost.my.id 3 years
anrcleanteam.com/js/colorado/colorado.edu/index.htm 3 years
anrcleanteam.com/js/colorado/colorado.edu/index.htm 3 years
www-colorado-edu-user-login.s3.us-east-2.amazonaws.com/index.htm 4 years

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Recent screenshots
Screenshots of pages hosted on this IP

Related infrastructure
Summary of infrastructure which pages hosted on this IP frequently talked to

IPs 128.138.129.52 | 31x

Domains www.colorado.edu | 31x

Related screenshots
Screenshots of pages that talked to this IP

WHOIS for 128.138.129.52


NetRange:       128.138.0.0 - 128.138.255.255
CIDR:           128.138.0.0/16
NetName:        COLORADO
NetHandle:      NET-128-138-0-0-1
Parent:         NET128 (NET-128-0-0-0-0)
NetType:        Direct Allocation
OriginAS:       AS104
Organization:   University of Colorado (UNIVER-24)
RegDate:        1986-07-14
Updated:        2021-12-14
Ref:            https://rdap.arin.net/registry/ip/128.138.0.0

OrgName:        University of Colorado
OrgId:          UNIVER-24
Address:        Office of Information Technology
Address:        3645 Marine Street
City:           Boulder
StateProv:      CO
PostalCode:     80309-0455
Country:        US
RegDate:        1986-03-11
Updated:        2019-06-25
Ref:            https://rdap.arin.net/registry/entity/UNIVER-24

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

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

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