Clinicaltrials.gov CTG Labs - NCBI

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Online

Server IP address resolved: Yes
Http response code: 200
Response time: 0.27 sec.
Last Checked: 06/10/2024

Over the time clinicaltrials.gov has been ranked as high as 939 in the world, while most of its traffic comes from United States, where it reached as high as 4,345 position.

Clinicaltrials.gov receives about 17,315 unique visitors and 52,811 pageviews per day. The estimated value of clinicaltrials.gov is 928,560 USD. Each unique visitor makes about 3.05 pageviews on average.

Clinicaltrials.gov is registered under .GOV top-level domain. Check other websites in .GOV zone.

At the time of the last check (October 13, 2024) clinicaltrials.gov has a valid and up-to-date wildcard SSL certificate issued by GoDaddy.com, Inc. that expires on August 02, 2025. Check other websites using SSL certificates issued by GoDaddy.com, Inc..

According to Google Safe Browsing, Google Safe Search, Symantec and Web of Trust clinicaltrials.gov is quite a safe domain.

Mobile-Friendly test indicates that clinicaltrials.gov is well optimized for mobile and tablet devices.


Global Rank
12,796
Average Load Time
1.37sec
Links In Count
8,068
Website Value
$928,560

Audience Geography. Where are clinicaltrials.gov visitors located?

Country Percent of Pageviews
United States United States US41.2%
China China CN22.7%
France France FR5%
India India IN4.7%
Canada Canada CA3.8%
United Kingdom United Kingdom GB3.3%
Japan Japan JP2.4%
Italy Italy IT2.2%
Australia Australia AU1.4%
Other13.4%
Country Percent of Visitors
United States United States US43.2%
China China CN17.2%
India India IN4.3%
Japan Japan JP3.8%
United Kingdom United Kingdom GB3.2%
Canada Canada CA2.8%
Australia Australia AU2.2%
Italy Italy IT1.9%
France France FR1.8%
Other19.5%

Where do visitors go on clinicaltrials.gov?

Subdomain Pageviews
clinicaltrials.gov		84.68%
register.clinicaltrials.gov		15.04%
other		0.28%
Subdomain Pageviews per User
register.clinicaltrials.gov		12
clinicaltrials.gov		2.5
Subdomain Reach
clinicaltrials.gov		97.31%
register.clinicaltrials.gov		3.52%

How popular is clinicaltrials.gov?

Days Reach Rank Reach Rank Delta Reach per Million Reach per Million Delta
9013198-7416332%
3011914-18577020%
712047-148680.3%
110335162582-16.34%
Days Pageviews Rank Pageviews Rank Delta Pageviews per Million Pageviews per Million Delta Pageviews per User Pageviews per User Delta
901416481752-8.519%3.05-10.56%
3013494-4715483%2.9-11.04%
716626436144-28.06%2.4-28.31%
11721742944-3.47%220%
Period Global Rank Global Rank Delta
past 3 months12796-289
past month11657-1389
past week125641014
yesterday113401280

Alexa Rank shows how popular clinicaltrials.gov is in comparison with other sites. The most popular site has Alexa Rank equals 1. If clinicaltrials.gov 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 clinicaltrials.gov and pageviews on clinicaltrials.gov over the past 3 months.

Overview
Last Updated: 07/02/2025
Overall result - "clinicaltrials.gov" 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: 03/21/2025
clinicaltrials.gov is safe.

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

Google Safe Search
Last Updated: 02/07/2019
clinicaltrials.gov 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
Malware not found at "clinicaltrials.gov".
"clinicaltrials.gov" is not a phishing page.
"clinicaltrials.gov" does not install unwanted software.
"clinicaltrials.gov" does not contain harmfull applications.
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
clinicaltrials.gov is safe.

McAfee assesses clinicaltrials.gov 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 clinicaltrials.gov for mature or inappropriate content, only security checks are evaluated.

Web of Trust
Last Updated: 01/09/2019
clinicaltrials.gov child safety isvery good.

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

SSL Information
SSL Checker Tool
Domain *.clinicaltrials.gov
Issuer OrganizationGoDaddy.com, Inc.
Issuer Go Daddy Secure Certificate Authority - G2
Algorithm RSA-SHA256
Valid form 07/01/2024
Expiration 08/02/2025
SignedCertificate is not self signed
Additional Domains *.clinicaltrials.gov
clinicaltrials.gov
Server Location
Geolocation Tool
Bethesda
Maryland
United States
ASN Information
ASN Lookup Tool

ASN ID: 396982
ASN Title: GOOGLE-PRIVATE-CLOUD - Google LLC, US

Last Update: 04/10/2025

#
# ARIN WHOIS data and services are subject to the Terms of Use
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ASNumber: 396982
ASName: GOOGLE-PRIVATE-CLOUD
ASHandle: AS396982
RegDate: 2018-08-15
Updated: 2018-08-15
Comment: *** This ASN is used for Google Private Cloud ***
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Ref: https://rdap.arin.net/registry/autnum/396982


OrgName: Google LLC
OrgId: GOOGL-2
Address: 1600 Amphitheatre Parkway
City: Mountain View
StateProv: CA
PostalCode: 94043
Country: US
RegDate: 2006-09-29
Updated: 2017-12-21
Comment: *** The IP addresses under this Org-ID are in use by Google Cloud customers ***
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Comment:
Comment: Complaints sent to any other POC will be ignored.
Ref: https://rdap.arin.net/registry/entity/GOOGL-2

OrgTechHandle: ZG39-ARIN
OrgTechName: Google LLC
OrgTechPhone: +1-650-253-0000
OrgTechEmail: arin-contact@google.com
OrgTechRef: https://rdap.arin.net/registry/entity/ZG39-ARIN

OrgAbuseHandle: GCABU-ARIN
OrgAbuseName: GC Abuse
OrgAbusePhone: +1-650-253-0000
OrgAbuseEmail: google-cloud-compliance@google.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/GCABU-ARIN

OrgNOCHandle: GCABU-ARIN
OrgNOCName: GC Abuse
OrgNOCPhone: +1-650-253-0000
OrgNOCEmail: google-cloud-compliance@google.com
OrgNOCRef: https://rdap.arin.net/registry/entity/GCABU-ARIN

#
# ARIN WHOIS data and services are subject to the Terms of Use
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# If you see inaccuracies in the results, please report at
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WHOIS
WHOIS Lookup Tool

Domain Name: clinicaltrials.gov
Registrar WHOIS Server: whois.nic.gov
Registrar URL: https://get.gov
Updated Date: 2024-01-08T02:55:33Z
Creation Date: 2000-02-03T19:19:38Z
Registry Expiry Date: 2025-09-22T19:03:23Z
Registrar: Cybersecurity and Infrastructure Security Agency
Registrar IANA ID: 8888888
Registrar Abuse Contact Email:
Registrar Abuse Contact Phone:
Domain Status: serverTransferProhibited https://icann.org/epp#serverTransferProhibited
Registry Registrant ID: REDACTED FOR PRIVACY
Registrant Name: REDACTED FOR PRIVACY
Registrant Organization: REDACTED FOR PRIVACY
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State/Province: REDACTED FOR PRIVACY
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: REDACTED FOR PRIVACY
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Security Phone: REDACTED FOR PRIVACY
Security Email: responsibledisclosure@hhs.gov
Name Server: ns-cloud-d1.googledomains.com
Name Server: ns-cloud-d2.googledomains.com
Name Server: ns-cloud-d3.googledomains.com
Name Server: ns-cloud-d4.googledomains.com
DNSSEC: signedDelegation
>>> Last update of WHOIS database: 2024-09-10T21:48:46Z

DNS Records
DNS Lookup Tool
HostA RecordTTL
clinicaltrials.gov130.14.81.5030
clinicaltrials.gov165.112.8.9630
HostMX RecordPriorityTTL
clinicaltrials.govNihcesxway5.hub.nih.gov101800
clinicaltrials.govNihcesxway3.hub.nih.gov101800
clinicaltrials.govNihcesxway4.hub.nih.gov101800
HostNS RecordTTL
clinicaltrials.govgslb02.nlm.nih.gov60
clinicaltrials.govgslb03.nlm.nih.gov60
clinicaltrials.govgslb01.nlm.nih.gov60
HostTXT RecordTTL
clinicaltrials.govv=spf1 include:nih.gov ~all60
clinicaltrials.govGrclYGeUpoKjW0RtHDm8IoEXyQddPqL5pdiiXvLuV7za7OiNXC+wgFWXKhBJGAt5m6Qx3pTXVsPlpI18d7ykiQ==60

gslb01.nlm.nih.gov
TTL: 60
Email address: nlmdnshostmaster.mail.nih.gov
Serial: 2019071212
Refresh: 10800
Retry: 3600
Expire: 604800
Minimum: 60

HTML Validation Tool
Errors
Warnings
Desktop Page Insights Tool

Last tested: 12/06/2019

Desktop
Desktop Speed
82%
Desktop Resource Breakdown
Total Resources34
Number of Hosts5
Static Resources11
JavaScript Resources14
CSS Resources11
Mobile Page Insights Tool

Last tested: 12/06/2019

Mobile
Mobile Usability
99%
Mobile Speed
67%
Mobile Resource Breakdown
Total Resources34
Number of Hosts5
Static Resources11
JavaScript Resources14
CSS Resources11
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