Clarkplanetarium.org Clark Planetarium

Clark Planetarium offers free interactive exhibits, plus educational shows in the IMAX® and dome theatres. Learn about science, planet Earth and the e...

Clarkplanetarium.org Overview

Clarkplanetarium.org ranking shows that the page is at position 3,823,051 over the world.

Clarkplanetarium.org hosting company servers are placed in the United States, but, unfortunately, it’s not possible to identify the countries where the bulk of clarkplanetarium.org users come from and, therefore, we couldn’t define if the distance can influence the webpage load time. See the list of other webpages hosted on SLCO-ASN-01, US servers.

In terms of rank-to-traffic ratio, clarkplanetarium.org has 94 unique users per day, viewing 190 pages. The rank based value of clarkplanetarium.org is 3,154 USD. Every user makes 2.16 pageviews on average.

Clarkplanetarium.org boasts a link base consisting of 235 referring domains and 253 external backlinks, as revealed by the data obtained from web network scanning.

Clarkplanetarium.org top-level domain belongs to .ORG domain zone. Check other webpages in .ORG zone.

According the last verification test in July 06, 2024, clarkplanetarium.org has an expired wildcard SSL certificate issued by Sectigo Limited (expired on February 09, 2025). Click button “Update” SSL Information at the Safety Information section. Check the list of websites using SSL by Sectigo Limited.

Based on data from Google Safe Browsing, Google Safe Search, Symantec and Web of Trust clarkplanetarium.org is a fairly safe domain.

According the Mobile-Friendly test by Google clarkplanetarium.org is nice optimized for mobile devices and tablets, however the webpage speed could be improved.

Clarkplanetarium.org Rank Summary

Global Rank

3,823,051

Average Load Time

1.43sec

Links In Count

133

Website Value

$2,920

Audience Geography. Where are clarkplanetarium.org visitors located?

Country	Visitors

Country	Pageviews

Country	Rank

Where do visitors go on clarkplanetarium.org?

Subdomain	Pageviews

Subdomain	Pageviews per User

Subdomain	Reach

How popular is clarkplanetarium.org?

Period	Global Rank	Global Rank Delta
past 3 months	3823051	1218679

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	3793862	841056	0	-32.14%	2	20%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	3971128	1377926	6	-43.48%

Clarkplanetarium.org Website Safety

Overview

Last Updated: 03/28/2026

Overall result - clarkplanetarium.org 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: 02/12/2026

clarkplanetarium.org is safe.

Norton ConnectSafe evaluates clarkplanetarium.org for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search

Last Updated: 03/24/2019

clarkplanetarium.org 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: 01/09/2019

clarkplanetarium.org 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: 02/15/2021

clarkplanetarium.org is safe.

McAfee assesses clarkplanetarium.org 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 clarkplanetarium.org for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 01/12/2019

clarkplanetarium.org child safety is very good.

The WOT calculates reputation of the clarkplanetarium.org. This reputation system receives ratings from users and information from third-party sources, assesses the clarkplanetarium.org for safety features and confirms, whether clarkplanetarium.org is suitable for children.

SSL Information

SSL Checker Tool

Domain	*.slco.org
Issuer Organization	Sectigo Limited
Issuer	Sectigo RSA Domain Validation Secure Server CA
Algorithm	RSA-SHA256
Valid form	01/10/2024
Expiration	02/09/2025
Signed	Certificate is not self signed
Additional Domains	*.slco.org slco.org

Clarkplanetarium.org Rank History

Alexa Rank shows how popular clarkplanetarium.org is in comparison with other sites. The most popular site has Alexa Rank equals 1. If clarkplanetarium.org has Alexa Rank equals 100,000, then it is in TOP 100,000 popular sites in the world. The rank is calculated using a combination of average daily visitors to clarkplanetarium.org and pageviews on clarkplanetarium.org over the past 3 months.

Clarkplanetarium.org Hosting Information

Server Location

Geolocation Tool

ASN Information

ASN Lookup Tool

ASN ID: 400988

ASN Title: SLCO-ASN-01, US

Last Update: 03/15/2026

#
# 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 1997-2025, American Registry for Internet Numbers, Ltd.
#

ASNumber: 400988
ASName: SLCO-ASN-01
ASHandle: AS400988
RegDate: 2024-04-15
Updated: 2024-04-15
Ref: https://rdap.arin.net/registry/autnum/400988

OrgName: Salt Lake County
OrgId: SLC-5
Address: 2001 South State Street
Address: S3-600
City: Salt Lake City
StateProv: UT
PostalCode: 84190
Country: US
RegDate: 1993-01-25
Updated: 2024-12-03
Ref: https://rdap.arin.net/registry/entity/SLC-5

OrgAbuseHandle: HESSC8-ARIN
OrgAbuseName: Hess, Corey
OrgAbusePhone: +1-385-468-0601
OrgAbuseEmail: chess@saltlakecounty.gov
OrgAbuseRef: https://rdap.arin.net/registry/entity/HESSC8-ARIN

OrgRoutingHandle: HESSC8-ARIN
OrgRoutingName: Hess, Corey
OrgRoutingPhone: +1-385-468-0601
OrgRoutingEmail: chess@saltlakecounty.gov
OrgRoutingRef: https://rdap.arin.net/registry/entity/HESSC8-ARIN

OrgRoutingHandle: ANDER2352-ARIN
OrgRoutingName: Andersen, Chris
OrgRoutingPhone: +1-385-468-0622
OrgRoutingEmail: CAndersen@SaltLakeCounty.gov
OrgRoutingRef: https://rdap.arin.net/registry/entity/ANDER2352-ARIN

OrgTechHandle: MLE1-ARIN
OrgTechName: Evans, Mark L.
OrgTechPhone: +1-385-468-0666
OrgTechEmail: mevans@slco.org
OrgTechRef: https://rdap.arin.net/registry/entity/MLE1-ARIN

OrgNOCHandle: HESSC8-ARIN
OrgNOCName: Hess, Corey
OrgNOCPhone: +1-385-468-0601
OrgNOCEmail: chess@saltlakecounty.gov
OrgNOCRef: https://rdap.arin.net/registry/entity/HESSC8-ARIN

OrgRoutingHandle: ROSSD94-ARIN
OrgRoutingName: Ross, Daren
OrgRoutingPhone: +1-385-468-0713
OrgRoutingEmail: dlross@slco.org
OrgRoutingRef: https://rdap.arin.net/registry/entity/ROSSD94-ARIN

OrgDNSHandle: ANDER2352-ARIN
OrgDNSName: Andersen, Chris
OrgDNSPhone: +1-385-468-0622
OrgDNSEmail: CAndersen@SaltLakeCounty.gov
OrgDNSRef: https://rdap.arin.net/registry/entity/ANDER2352-ARIN

OrgTechHandle: ROSSD94-ARIN
OrgTechName: Ross, Daren
OrgTechPhone: +1-385-468-0713
OrgTechEmail: dlross@slco.org
OrgTechRef: https://rdap.arin.net/registry/entity/ROSSD94-ARIN

OrgDNSHandle: HESSC8-ARIN
OrgDNSName: Hess, Corey
OrgDNSPhone: +1-385-468-0601
OrgDNSEmail: chess@saltlakecounty.gov
OrgDNSRef: https://rdap.arin.net/registry/entity/HESSC8-ARIN

OrgTechHandle: SHIPL40-ARIN
OrgTechName: Shipley-Walker, Rina
OrgTechPhone: +1-385-468-0712
OrgTechEmail: rshipley@slco.org
OrgTechRef: https://rdap.arin.net/registry/entity/SHIPL40-ARIN

OrgAbuseHandle: MLE1-ARIN
OrgAbuseName: Evans, Mark L.
OrgAbusePhone: +1-385-468-0666
OrgAbuseEmail: mevans@slco.org
OrgAbuseRef: https://rdap.arin.net/registry/entity/MLE1-ARIN

OrgTechHandle: ANDER2352-ARIN
OrgTechName: Andersen, Chris
OrgTechPhone: +1-385-468-0622
OrgTechEmail: CAndersen@SaltLakeCounty.gov
OrgTechRef: https://rdap.arin.net/registry/entity/ANDER2352-ARIN

OrgTechHandle: POSNE9-ARIN
OrgTechName: Posner, Zachary
OrgTechPhone: +1-385-468-0649
OrgTechEmail: zposner@slco.org
OrgTechRef: https://rdap.arin.net/registry/entity/POSNE9-ARIN

OrgTechHandle: HESSC8-ARIN
OrgTechName: Hess, Corey
OrgTechPhone: +1-385-468-0601
OrgTechEmail: chess@saltlakecounty.gov
OrgTechRef: https://rdap.arin.net/registry/entity/HESSC8-ARIN

OrgDNSHandle: ROSSD94-ARIN
OrgDNSName: Ross, Daren
OrgDNSPhone: +1-385-468-0713
OrgDNSEmail: dlross@slco.org
OrgDNSRef: https://rdap.arin.net/registry/entity/ROSSD94-ARIN

OrgNOCHandle: ANDER2352-ARIN
OrgNOCName: Andersen, Chris
OrgNOCPhone: +1-385-468-0622
OrgNOCEmail: CAndersen@SaltLakeCounty.gov
OrgNOCRef: https://rdap.arin.net/registry/entity/ANDER2352-ARIN

OrgNOCHandle: ROSSD94-ARIN
OrgNOCName: Ross, Daren
OrgNOCPhone: +1-385-468-0713
OrgNOCEmail: dlross@slco.org
OrgNOCRef: https://rdap.arin.net/registry/entity/ROSSD94-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 1997-2025, American Registry for Internet Numbers, Ltd.
#

Clarkplanetarium.org Domain Registration and Settings

WHOIS

WHOIS Lookup Tool

Domain Name: clarkplanetarium.org
Registry Domain ID: a4d64e685e814f009af203526631a998-LROR
Registrar WHOIS Server: whois.tucows.com
Registrar URL: http://www.tucows.com
Updated Date: 2024-06-15T03:46:42Z
Creation Date: 2001-07-09T19:31:15Z
Registry Expiry Date: 2025-07-09T19:31:15Z
Registrar: Tucows Domains Inc.
Registrar IANA ID: 69
Registrar Abuse Contact Email: domainabuse@tucows.com
Registrar Abuse Contact Phone: +1.4165350123
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Registry Registrant ID: REDACTED FOR PRIVACY
Registrant Name: REDACTED FOR PRIVACY
Registrant Organization: Clark Planetarium
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State/Province: UT
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: US
Registrant Phone: REDACTED FOR PRIVACY
Registrant Phone Ext: REDACTED FOR PRIVACY
Registrant Fax: REDACTED FOR PRIVACY
Registrant Fax Ext: REDACTED FOR PRIVACY
Registrant Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Admin ID: REDACTED FOR PRIVACY
Admin Name: REDACTED FOR PRIVACY
Admin Organization: REDACTED FOR PRIVACY
Admin Street: REDACTED FOR PRIVACY
Admin City: REDACTED FOR PRIVACY
Admin State/Province: REDACTED FOR PRIVACY
Admin Postal Code: REDACTED FOR PRIVACY
Admin Country: REDACTED FOR PRIVACY
Admin Phone: REDACTED FOR PRIVACY
Admin Phone Ext: REDACTED FOR PRIVACY
Admin Fax: REDACTED FOR PRIVACY
Admin Fax Ext: REDACTED FOR PRIVACY
Admin Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Tech ID: REDACTED FOR PRIVACY
Tech Name: REDACTED FOR PRIVACY
Tech Organization: REDACTED FOR PRIVACY
Tech Street: REDACTED FOR PRIVACY
Tech City: REDACTED FOR PRIVACY
Tech State/Province: REDACTED FOR PRIVACY
Tech Postal Code: REDACTED FOR PRIVACY
Tech Country: REDACTED FOR PRIVACY
Tech Phone: REDACTED FOR PRIVACY
Tech Phone Ext: REDACTED FOR PRIVACY
Tech Fax: REDACTED FOR PRIVACY
Tech Fax Ext: REDACTED FOR PRIVACY
Tech Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Name Server: ns.xmission.com
Name Server: ns1.xmission.com
Name Server: ns2.xmission.com
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2024-11-24T14:24:45Z

DNS Records

DNS Lookup Tool

Host	A Record	TTL
clarkplanetarium.org	198.50.1.209	86400

Host	MX Record	Priority	TTL
clarkplanetarium.org	mx.xmission.com	10	86400

Host	NS Record	TTL
clarkplanetarium.org	ns3.xmission.com	86400
clarkplanetarium.org	ns.xmission.com	86400
clarkplanetarium.org	ns1.xmission.com	86400
clarkplanetarium.org	ns2.xmission.com	86400

Host	TXT Record	TTL
clarkplanetarium.org	google-site-verification=GIUDWpzekJ7dd4d5daFPStqmxrqkpuOv8mPSLraeIZc	86400

ns3.xmission.com
TTL: 86400
Email address: rcox.xmission.com
Serial: 2021110902
Refresh: 10800
Retry: 3600
Expire: 604800
Minimum: 10800

Clarkplanetarium.org HTML Check

HTML Validation Tool

Errors

Element “head” is missing a required instance of child element “title”.

Duplicate ID “skipto”.

Bad value “/uploadedImages/slcoorg/Clark_Planetarium/images/events/Summer Lecture Series_Logo_Grey_Vertical.png” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.

Bad value “submit” for attribute “type” on element “a”: Subtype missing.

Duplicate attribute “name”.

End tag “form” seen, but there were open elements.

Unclosed element “div”.

Cannot recover after last error. Any further errors will be ignored.

Warnings

The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.

The first occurrence of ID “skipto” was here.

Empty heading.

Clarkplanetarium.org Desktop Performance

Last tested: 09/27/2015

Desktop Speed

48%

Optimize images

Leverage browser caching

Enable compression

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Reduce server response time

Minify JavaScript

Minify CSS

Minify HTML

Desktop Resource Breakdown

Total Resources	110
Number of Hosts	30
Static Resources	54
JavaScript Resources	11
CSS Resources	6

Clarkplanetarium.org Mobile Insights

Last tested: 07/03/2019

Mobile Usability

96%

Size content to viewport

Mobile Speed

46%

Enable compression

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Leverage browser caching

Optimize images

Minify CSS

Minify HTML

Minify JavaScript

Mobile Resource Breakdown

Total Resources	53
Number of Hosts	19
Static Resources	31
JavaScript Resources	21
CSS Resources	1

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Clarkplanetarium.org Clark Planetarium

Clark Planetarium offers free interactive exhibits, plus educational shows in the IMAX® and dome theatres. Learn about science, planet Earth and the e...

Clarkplanetarium.org Overview

Clarkplanetarium.org Rank Summary

Clarkplanetarium.org Website Safety

Clarkplanetarium.org Rank History

Clarkplanetarium.org Hosting Information

Clarkplanetarium.org Domain Registration and Settings

Clarkplanetarium.org HTML Check

Clarkplanetarium.org Desktop Performance

Clarkplanetarium.org Mobile Insights

Clarkplanetarium.org Similar Audits

Clarkplanetarium.org Common Typos