Home | University of Colorado Boulder

The University of Colorado Boulder is a bold, innovative community of scholars and learners who accelerate human potential to solve the humanitarian, ...

Online Status

Server IP address resolved: Yes
Http response code: 200
Response time: 0.47 sec.
Last Checked: 05/18/2021 traffic volume is 73,273 unique daily visitors and their 208,094 pageviews. The web value rate of is 2,727,601 USD. Each visitor makes around 3.04 page views on average.

By Alexa's traffic estimates placed at 1,045 position over the world, while the largest amount of its visitors comes from United States, where it takes 2,035 place.

Perfect for that their data center (provided by company company COLORADO-AS - University of Colorado at Boulder, US) is located in United States, as that empowers most of the visitors to reduce the page load time. See the list of other web pages hosted by COLORADO-AS - University of Colorado at Boulder, US. registered under .EDU top-level domain. Check other websites in .EDU zone.

The last verification results, performed on (November 28, 2019) show that has an expired SSL certificate issued by Sectigo Limited (expired on January 27, 2021). Click “Refresh” button for SSL Information at the Safety Information section. Check the list of websites using SSL certificates issued by Sectigo Limited.

In accordance with Google Safe Browsing, Google Safe Search, Symantec and Web of Trust is pretty a safe domain.

Relying Google MobileFriendly test is well optimized for mobile and tablet devices, however web page loading speed may be improved.

Global Rank
Average Load Time
Links In Count
Website Value
$2.5 M

Last Updated: 05/18/2021
Overall result - is safe.
We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.
Norton Connect Safe
Last Updated: 08/05/2020 is safe.
Norton ConnectSafe evaluates for any unsafe and insecure content. The results are critical for families with young children.
Google Safe Search
Last Updated: 02/04/2019 is safe.
SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.
Google Safe Browsing
Last Updated: 08/11/2020 is safe.
Malware: not found.
Phishing: not detected.
Unwanted software: not found.
Harmfull applications: not found.
Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.
Site Advisor
Last Updated: 02/22/2021 is safe.
McAfee assesses for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze for mature or inappropriate content, only security checks are evaluated.
Web of Trust
Last Updated: 01/09/2019 child safety is very good.
The WOT calculates reputation of the This reputation system receives ratings from users and information from third-party sources, assesses the for safety features and confirms, whether is suitable for children.

SSL Information
Issuer Organization Sectigo Limited
Issuer Sectigo RSA Organization Validation Secure Server CA
Algorithm RSA-SHA256
Valid form 01/28/2019
Expiration 01/27/2021
Signed Certificate is not self signed
Additional Domains
Server Location

ASN Information

ASN ID: 104
ASN Title: COLORADO-AS - University of Colorado at Boulder, US

Last Update: 10/14/2020

# ARIN WHOIS data and services are subject to the Terms of Use
# available at:
# If you see inaccuracies in the results, please report at
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.

ASNumber: 104
ASHandle: AS104
RegDate: 1987-04-08
Updated: 2014-01-31

OrgName: University of Colorado at Boulder
OrgId: UCAB-2
Address: Campus Box 455
City: Boulder
StateProv: CO
PostalCode: 80309-0455
Country: US
RegDate: 1987-04-08
Updated: 2014-01-31

OrgTechHandle: DCMW-ARIN
OrgTechName: Wood, David CM
OrgTechPhone: +1-303-492-4905

OrgAbuseHandle: ABUSE306-ARIN
OrgAbuseName: Abuse
OrgAbusePhone: +1-303-735-4357

RAbuseHandle: ABUSE306-ARIN
RAbuseName: Abuse
RAbusePhone: +1-303-735-4357

RTechHandle: DCMW-ARIN
RTechName: Wood, David CM
RTechPhone: +1-303-492-4905

# ARIN WHOIS data and services are subject to the Terms of Use
# available at:
# If you see inaccuracies in the results, please report at
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.


This Registry database contains ONLY .EDU domains.
The data in the EDUCAUSE Whois database is provided
by EDUCAUSE for information purposes in order to
assist in the process of obtaining information about
or related to .edu domain registration records.

The EDUCAUSE Whois database is authoritative for the
.EDU domain.

A Web interface for the .EDU EDUCAUSE Whois Server is
available at:

By submitting a Whois query, you agree that this information
will not be used to allow, enable, or otherwise support
the transmission of unsolicited commercial advertising or
solicitations via e-mail. The use of electronic processes to
harvest information from this server is generally prohibited
except as reasonably necessary to register or modify .edu
domain names.



University of Colorado
3645 Marine Street
3645 Marine Street - 445 UCB
Boulder, CO 80309-0455

Administrative Contact:
Domain Admin
University of Colorado
3645 Marine Street
3645 Marine Street - 445 UCB
Boulder, CO 80309-0455

Technical Contact:
Domain Admin
University of Colorado
3645 Marine Street
3645 Marine Street - 445 UCB
Boulder, CO 80309-0455

Name Servers:

Domain record activated: 02-Jun-1986
Domain record last updated: 25-Mar-2021
Domain expires: 31-Jul-2021

DNS Records
HostA RecordTTL
HostMX RecordPriorityTTL
HostNS RecordTTL
HostTXT RecordTTL
colorado.eduv=spf1 ip4: ip4: ip4: ip4: ip4: ip4: ~all3600
TTL: 3600
Email address:
Serial: 2019080714
Refresh: 3600
Retry: 1200
Expire: 2419200
Minimum: 3600


Last tested: 12/02/2019

Desktop Speed

Desktop Resource Breakdown
Total Resources99
Number of Hosts32
Static Resources39
JavaScript Resources31
CSS Resources9

Last tested: 12/12/2017

Mobile Usability
Mobile Speed

Mobile Resource Breakdown
Total Resources148
Number of Hosts62
Static Resources44
JavaScript Resources23
CSS Resources9

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