Back to Home

Security Analysis Results

michaelhartl-com.pages.dev

Comprehensive domain security and infrastructure analysis

Live Website Preview

website screenshot of https://michaelhartl-com.pages.dev/

No Security Risks Detected

This domain appears to be safe and secure

100%
Score

Disclaimer: This assessment is based on automated analysis of publicly available information. Results are for informational purposes only. For critical applications, consult security professionals.

Scan Information

Last checked:July 21, 2025 05:22:29
Target URL:https://michaelhartl-com.pages.dev/
Scan Complete

Refresh page after 10 minutes
for updated results

Page Information

Target URL
https://michaelhartl-com.pages.dev/
Page Title
Michael Hartl
michaelhartl-com.pages.dev faviconSite Favicon
Status
Active

Host Information

Domain
michaelhartl-com.pages.dev
Server
cloudflare
Country
United States
IP Address
172.66.47.165
ASN Information
13335
CLOUDFLARENET

Technologies

Twitter logo
Twitter
Widgets
jsDelivr logo
jsDelivr
CDN
jQuery logo
jQuery
JavaScript libraries
HSTS logo
HSTS
Security
Google Analytics logo
Google Analytics
Analytics
cdnjs logo
cdnjs
CDN
+4 more technologies detected

SSL Certificate

HTTPS Enabled
Secure
Certificate Issuer
49m350 Gateway Proxy BISO MITM CA
Valid From
2025-07-18 06:57:16
Valid Until
2025-08-17 06:57:46
Subject Name
michaelhartl-com.pages.dev

Performance Statistics

46
Total Requests
12
Domains
12
IP Addresses
1.09 MB
Transfer Size
Content Size3.31 MB

HTTP Headers

access-control-allow-origin
*
alt-svc
h3=":443"; ma=86400
cache-control
public, max-age=0, must-revalidate
cf-ray
962842ef3c6f552e-MRS
cf-team
28cd0826960000d4c6ac1db400000001
content-encoding
br
content-type
text/html; charset=utf-8
date
Mon, 21 Jul 2025 05:22:36 GMT
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
referrer-policy
strict-origin-when-cross-origin
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=YRtnmnqIi5Z%2BkZ5NbV2Pyqh%2B9190Pq1XrX8bejRWLmg8MHa60f6A3h5H4zRDO8WUhLCjFL6UWrJGUx42HNMLwLn8qolRM9hcLkxRcL4QFtCXdFf7rkKQhFlpsPJej8UJlaA2%2BY7FtGX5u0F5UU0LKDfLkAm0iigOzA%3D%3D"}],"group":"cf-nel","max_age":604800}
server
cloudflare
server-timing
cfL4;desc="?proto=TCP&rtt=0&min_rtt=0&rtt_var=0&sent=0&recv=0&lost=0&retrans=0&sent_bytes=0&recv_bytes=0&delivery_rate=0&cwnd=0&unsent_bytes=0&cid=b530df70f726b003&ts=823&x=0" cfReqDur;dur=964.503
vary
Accept-Encoding
x-content-type-options
nosniff
15 headers detected

Technology Stack Analysis

Twitter

Twitter

Widgets

Twitter is a 'microblogging' system that allows you to send and receive short posts called tweets.

jsDelivr

jsDelivr

CDN

JSDelivr is a free public CDN for open-source projects. It can serve web files directly from the npm registry and GitHub repositories without any configuration.

jQuery

jQuery

JavaScript libraries

jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.

HSTS

HSTS

Security

HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.

Google Analytics

Google Analytics

Analytics

Google Analytics is a free web analytics service that tracks and reports website traffic.

cdnjs

cdnjs

CDN

cdnjs is a free distributed JS library delivery service.

Cloudflare

Cloudflare

CDN

Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.

Pygments

Pygments

Miscellaneous

No description available

HTTP/3

HTTP/3

Miscellaneous

HTTP/3 is the third major version of the Hypertext Transfer Protocol used to exchange information on the World Wide Web.

Gravatar

Gravatar

Miscellaneous

Gravatar is a service for providing globally unique avatars.

Website Cookies 4

_gat_gtag_UA_239903_3

.michaelhartl-com.pages.dev

Value
1
Expires:7/21/2025

_gid

.michaelhartl-com.pages.dev

Value
GA1.3.913588914.1753075368
Expires:7/22/2025

_ga

.michaelhartl-com.pages.dev

Value
GA1.3.2082295368.1753075361
Expires:8/25/2026

_ga_2LXBJ1Q80T

.michaelhartl-com.pages.dev

Value
GS2.1.s1753075360$o1$g0$t1753075360$j60$l0$h0
Expires:8/25/2026

External Links 21

Substack

substack.michaelhartl.com

Analyze
Target URL
https://substack.michaelhartl.com/

Tau Day

tauday.com

Analyze
Target URL
https://tauday.com/

The Tau Manifesto

tauday.com

Analyze
Target URL
https://tauday.com/tau-manifesto

Ruby on Rails Tutorial

www.railstutorial.org

Analyze
Target URL
https://www.railstutorial.org/

Learn Enough

www.learnenough.com

Analyze
Target URL
https://www.learnenough.com/

acquisition of Learn Enough

news.learnenough.com

Analyze
Target URL
https://news.learnenough.com/big-news-about-learn-enough

Learn Enough Python to Be Dangerous

www.learnenough.com

Analyze
Target URL
https://www.learnenough.com/python

online courses

www.learnenough.com

Analyze
Target URL
https://www.learnenough.com/all-access

print editions, ebooks, and video bundles

www.informit.com

Analyze
Target URL
https://www.informit.com/search/index.aspx?query=michael+hartl

my final Learn Enough tutorial

news.learnenough.com

Analyze
Target URL
https://news.learnenough.com/learn-enough-python-to-be-dangerous

follow @mhartl

x.com

Analyze
Target URL
https://x.com/mhartl

𝕏

x.com

Analyze
Target URL
https://x.com/mhartl/status/1846264304758329779

Harvard

www.harvard.edu

Analyze
Target URL
https://www.harvard.edu/

Caltech

www.caltech.edu

Analyze
Target URL
https://www.caltech.edu/

Ph.D. in Physics

thesis.library.caltech.edu

Analyze
Target URL
https://thesis.library.caltech.edu/1940/

YCombinator

www.ycombinator.com

Analyze
Target URL
https://www.ycombinator.com/

black hole dynamics

arxiv.org

Analyze
Target URL
https://arxiv.org/search/gr-qc?searchtype=author&query=Hartl%2C+M+D

Lifetime Achievement Award for Excellence in Teaching

web.archive.org

Analyze
Target URL
https://web.archive.org/web/20021215060838/http://www.its.caltech.edu/~arcomm/teachawards/awards2000.html#lifetime-achievement-awards

Kip Thorne

en.wikipedia.org

Analyze
Target URL
https://en.wikipedia.org/wiki/Kip_Thorne

martial arts

archive.li

Analyze
Target URL
https://archive.li/bAF4k

Level 5

www.kravmagatraining.com

Analyze
Target URL
https://www.kravmagatraining.com/services/level-5/

Requested Domains 12

cdn.jsdelivr.net

Unknown Type
No category information available

cdnjs.cloudflare.com

Unknown Type
No category information available

connect.facebook.net

Unknown Type
No category information available

maxcdn.bootstrapcdn.com

Unknown Type
No category information available

michaelhartl-com.pages.dev

Apex domain
No category information available

platform.twitter.com

Unknown Type
No category information available

platform.x.com

Unknown Type
No category information available

secure.gravatar.com

Unknown Type
No category information available

substack.michaelhartl.com

Unknown Type
No category information available

use.typekit.net

Unknown Type
No category information available

www.google-analytics.com

Unknown Type
No category information available

www.googletagmanager.com

Unknown Type
No category information available
LinkCheck

© 2025 LinkCheck. Secure domain analysis you can trust.