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thekalmanfilter.com Open in urlscan Pro
66.235.200.154  Public Scan

Go To Rescan Add Verdict Report
Submitted URL: http://thekalmanfilter.com/
Effective URL: https://thekalmanfilter.com/
Submission: On February 13 via api from US — Scanned from DE
 Behaviour Indicators
Similar DOM Content API
Verdicts

Summary

This website contacted 8 IPs in 3 countries across 5 domains to perform 23 HTTP transactions. The main IP is 66.235.200.154, located in United States and belongs to CLOUDFLARENET, US. The main domain is thekalmanfilter.com.
TLS certificate: Issued by GTS CA 1P5 on January 20th 2024. Valid for: 3 months.
This is the only time thekalmanfilter.com was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
1 14 66.235.200.154 13335 (CLOUDFLAR...)
3 2a00:1450:400... 15169 (GOOGLE)
1 18.66.97.49 16509 (AMAZON-02)
1 99.84.88.30 16509 (AMAZON-02)
2 2a00:1450:400... 15169 (GOOGLE)
1 2001:4860:480... 15169 (GOOGLE)
1 2a00:1450:400... 15169 (GOOGLE)
23 8
14    66.235.200.154 (United States)

ASN13335 (CLOUDFLARENET, US)
PTR: travelsearch.com
thekalmanfilter.com
3    2a00:1450:4001:811::2008 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)
www.googletagmanager.com
1    18.66.97.49 (United States)

ASN16509 (AMAZON-02, US)
PTR: server-18-66-97-49.fra56.r.cloudfront.net
static.hotjar.com
1    99.84.88.30 (United States)

ASN16509 (AMAZON-02, US)
PTR: server-99-84-88-30.muc50.r.cloudfront.net
script.hotjar.com
2    2a00:1450:4001:82b::200e (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)
www.google-analytics.com
1    2001:4860:4802:32::36 (United States)

ASN15169 (GOOGLE, US)
region1.google-analytics.com
1    2a00:1450:400c:c00::9c (Brussels, Belgium)

ASN15169 (GOOGLE, US)
stats.g.doubleclick.net
Apex Domain
Subdomains		 Transfer
14 thekalmanfilter.com
thekalmanfilter.com
115 KB
3 google-analytics.com
www.google-analytics.com — Cisco Umbrella Rank: 27
region1.google-analytics.com — Cisco Umbrella Rank: 2173
21 KB
3 googletagmanager.com
www.googletagmanager.com — Cisco Umbrella Rank: 37
237 KB
2 hotjar.com
static.hotjar.com — Cisco Umbrella Rank: 695
script.hotjar.com — Cisco Umbrella Rank: 1019
59 KB
1 doubleclick.net
stats.g.doubleclick.net — Cisco Umbrella Rank: 80
348 B
23 5
Domain Requested by
14 thekalmanfilter.com 1 redirects thekalmanfilter.com
3 www.googletagmanager.com thekalmanfilter.com
www.googletagmanager.com
2 www.google-analytics.com www.googletagmanager.com
www.google-analytics.com
1 stats.g.doubleclick.net www.google-analytics.com
1 region1.google-analytics.com www.googletagmanager.com
1 script.hotjar.com static.hotjar.com
1 static.hotjar.com thekalmanfilter.com
23 7

This site contains links to these domains. Also see Links.

Domain
wordpress.org
Subject Issuer Validity Valid
thekalmanfilter.com
GTS CA 1P5		 2024-01-20 -
2024-04-19		 3 months crt.sh
*.google-analytics.com
GTS CA 1C3		 2024-01-09 -
2024-04-02		 3 months crt.sh
*.hotjar.com
Amazon ECDSA 256 M03		 2024-02-07 -
2025-03-08		 a year crt.sh
*.g.doubleclick.net
GTS CA 1C3		 2024-01-09 -
2024-04-02		 3 months crt.sh

This page contains 1 frames:

Primary Page: https://thekalmanfilter.com/
Frame ID: 0C7BC78300CA467246225629B318103B
Requests: 23 HTTP requests in this frame

Screenshot
Live screenshot
Full Image

Page Title

The Kalman Filter - we help students master the Kalman Filter

Page URL History Show full URLs

  1. http://thekalmanfilter.com/ HTTP 301
    https://thekalmanfilter.com/ Page URL

Detected technologies

Overall confidence: 100%
Detected patterns
  • <link rel=["']stylesheet["'] [^>]+/wp-(?:content|includes)/
  • /wp-(?:content|includes)/
Overall confidence: 100%
Detected patterns
  • <!-- This site is optimized with the Yoast (?:WordPress )?SEO plugin v([\d.]+) -
Overall confidence: 100%
Detected patterns
  • google-analytics\.com/(?:ga|urchin|analytics)\.js
Overall confidence: 100%
Detected patterns
  • googletagmanager\.com/gtm\.js
  • googletagmanager\.com/gtag/js
Overall confidence: 100%
Detected patterns
  • //static\.hotjar\.com/

Page Statistics

23
Requests

96 %
HTTPS

57 %
IPv6

5
Domains

7
Subdomains

8
IPs

3
Countries

431 kB
Transfer

1478 kB
Size

6
Cookies

Page URL History

This captures the URL locations of the websites, including HTTP redirects and client-side redirects via JavaScript or Meta fields.

  1. http://thekalmanfilter.com/ HTTP 301
    https://thekalmanfilter.com/ Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

23 HTTP transactions

Resource
Path		 Size
x-fer		 Type
MIME-Type
Primary Request /
thekalmanfilter.com/
Redirect Chain
  • http://thekalmanfilter.com/
  • https://thekalmanfilter.com/
42 KB
11 KB 		Document
General
Check archive.org
Download Go to
Full URL
https://thekalmanfilter.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
66.235.200.154 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
travelsearch.com
Software
cloudflare /
Resource Hash
2ab2108dbdb07645df2d9c6f0e147dc1964a9c92cf475824f98b059212327f7c

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36
accept-language
de-DE,de;q=0.9

Response headers

cf-cache-status
EXPIRED
cf-ray
854aeaaffb496a77-TXL
content-encoding
br
content-type
text/html; charset=UTF-8
date
Tue, 13 Feb 2024 06:11:56 GMT
host-header
c2hhcmVkLmJsdWVob3N0LmNvbQ==
last-modified
Mon, 12 Feb 2024 22:53:58 GMT
link
<https://thekalmanfilter.com/wp-json/>; rel="https://api.w.org/"
server
cloudflare
vary
Accept-Encoding

Redirect headers

CF-Cache-Status
MISS
CF-RAY
854aeaadefce6a76-TXL
Connection
keep-alive
Content-Type
text/html; charset=iso-8859-1
Date
Tue, 13 Feb 2024 06:11:55 GMT
Location
https://thekalmanfilter.com/
Server
cloudflare
Transfer-Encoding
chunked
Vary
Accept-Encoding
style.min.css
thekalmanfilter.com/wp-includes/css/dist/block-library/ 		108 KB
14 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://thekalmanfilter.com/wp-includes/css/dist/block-library/style.min.css?ver=6.4.3
Requested by
Host: thekalmanfilter.com
URL: https://thekalmanfilter.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
66.235.200.154 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
travelsearch.com
Software
cloudflare /
Resource Hash
0085adfd2d08a45f62a06d8f3f969ddc4a94ebe8d226511db90aa038f11ed180

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://thekalmanfilter.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date
Tue, 13 Feb 2024 06:11:56 GMT
content-encoding
br
cf-cache-status
REVALIDATED
last-modified
Thu, 01 Feb 2024 02:15:14 GMT
server
cloudflare
vary
Accept-Encoding
content-type
text/css
host-header
c2hhcmVkLmJsdWVob3N0LmNvbQ==
cf-ray
854aeab409c66a77-TXL
custom-color-overrides.css
thekalmanfilter.com/wp-content/themes/twentytwentyone/assets/css/ 		0
57 B 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://thekalmanfilter.com/wp-content/themes/twentytwentyone/assets/css/custom-color-overrides.css?ver=2.1
Requested by
Host: thekalmanfilter.com
URL: https://thekalmanfilter.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
66.235.200.154 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
travelsearch.com
Software
cloudflare /
Resource Hash
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://thekalmanfilter.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date
Tue, 13 Feb 2024 06:11:56 GMT
cf-cache-status
REVALIDATED
cf-bgj
minify
last-modified
Wed, 17 Jan 2024 02:18:00 GMT
server
cloudflare
cf-polished
origSize=130
vary
Accept-Encoding
content-type
text/css
host-header
c2hhcmVkLmJsdWVob3N0LmNvbQ==
accept-ranges
bytes
cf-ray
854aeab409c76a77-TXL
content-length
0
menu-image.css
thekalmanfilter.com/wp-content/plugins/menu-image/includes/css/ 		3 KB
800 B 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://thekalmanfilter.com/wp-content/plugins/menu-image/includes/css/menu-image.css?ver=3.11
Requested by
Host: thekalmanfilter.com
URL: https://thekalmanfilter.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
66.235.200.154 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
travelsearch.com
Software
cloudflare /
Resource Hash
0ac45ae94f52ebcb561f16e6d5f2bb66d56667f6fa330aeb0abbb9b02dc46792

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://thekalmanfilter.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date
Tue, 13 Feb 2024 06:11:56 GMT
content-encoding
br
cf-cache-status
REVALIDATED
cf-bgj
minify
last-modified
Thu, 28 Dec 2023 02:19:39 GMT
server
cloudflare
cf-polished
origSize=3343
vary
Accept-Encoding
content-type
text/css
host-header
c2hhcmVkLmJsdWVob3N0LmNvbQ==
cf-ray
854aeab409ca6a77-TXL
dashicons.min.css
thekalmanfilter.com/wp-includes/css/ 		58 KB
34 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://thekalmanfilter.com/wp-includes/css/dashicons.min.css?ver=6.4.3
Requested by
Host: thekalmanfilter.com
URL: https://thekalmanfilter.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
66.235.200.154 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
travelsearch.com
Software
cloudflare /
Resource Hash
c21e5a2b32c47bc5f9d9efc97bc0e29fd081946d1d3ebffc5621cfafb1d3960e

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://thekalmanfilter.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date
Tue, 13 Feb 2024 06:11:56 GMT
content-encoding
br
cf-cache-status
REVALIDATED
last-modified
Sun, 19 Dec 2021 23:24:37 GMT
server
cloudflare
vary
Accept-Encoding
content-type
text/css
host-header
c2hhcmVkLmJsdWVob3N0LmNvbQ==
cf-ray
854aeab409cb6a77-TXL
video-container.min.css
thekalmanfilter.com/wp-content/plugins/simple-embed-code/css/ 		221 B
181 B 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://thekalmanfilter.com/wp-content/plugins/simple-embed-code/css/video-container.min.css?ver=2.3.8
Requested by
Host: thekalmanfilter.com
URL: https://thekalmanfilter.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
66.235.200.154 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
travelsearch.com
Software
cloudflare /
Resource Hash
074d9505d547acdfced56ba7203b153958881abceb7a19326029f652acb75191

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://thekalmanfilter.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date
Tue, 13 Feb 2024 06:11:56 GMT
content-encoding
br
cf-cache-status
REVALIDATED
last-modified
Wed, 22 Nov 2023 02:24:48 GMT
server
cloudflare
vary
Accept-Encoding
content-type
text/css
host-header
c2hhcmVkLmJsdWVob3N0LmNvbQ==
cf-ray
854aeab409cc6a77-TXL
style.css
thekalmanfilter.com/wp-content/themes/twentytwentyone/ 		126 KB
18 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://thekalmanfilter.com/wp-content/themes/twentytwentyone/style.css?ver=2.1
Requested by
Host: thekalmanfilter.com
URL: https://thekalmanfilter.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
66.235.200.154 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
travelsearch.com
Software
cloudflare /
Resource Hash
959567dd2e47d46d3cbdee4a1b8b6e0d91dc2bfab8662692b3dc6f40005041cd

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://thekalmanfilter.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date
Tue, 13 Feb 2024 06:11:56 GMT
content-encoding
br
cf-cache-status
REVALIDATED
cf-bgj
minify
last-modified
Wed, 17 Jan 2024 02:18:00 GMT
server
cloudflare
cf-polished
origSize=155461
vary
Accept-Encoding
content-type
text/css
host-header
c2hhcmVkLmJsdWVob3N0LmNvbQ==
cf-ray
854aeab409cd6a77-TXL
enlighterjs.min.css
thekalmanfilter.com/wp-content/plugins/enlighter/cache/ 		83 KB
10 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://thekalmanfilter.com/wp-content/plugins/enlighter/cache/enlighterjs.min.css?ver=qE687FtPBzHX+qc
Requested by
Host: thekalmanfilter.com
URL: https://thekalmanfilter.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
66.235.200.154 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
travelsearch.com
Software
cloudflare /
Resource Hash
6d163364843d9689a1e89a9cc9f0b91adf32b6023acb2b154cbe633555b29042

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://thekalmanfilter.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date
Tue, 13 Feb 2024 06:11:56 GMT
content-encoding
br
cf-cache-status
REVALIDATED
last-modified
Sat, 21 Jan 2023 02:33:30 GMT
server
cloudflare
vary
Accept-Encoding
content-type
text/css
host-header
c2hhcmVkLmJsdWVob3N0LmNvbQ==
cf-ray
854aeab409cf6a77-TXL
primary-navigation.js
thekalmanfilter.com/wp-content/themes/twentytwentyone/assets/js/ 		4 KB
1 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://thekalmanfilter.com/wp-content/themes/twentytwentyone/assets/js/primary-navigation.js?ver=2.1
Requested by
Host: thekalmanfilter.com
URL: https://thekalmanfilter.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
66.235.200.154 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
travelsearch.com
Software
cloudflare /
Resource Hash
d1b4ac759c42db2ee852af2a8ee97fcfcc54f924ed52d5e37344c20c8312ff28

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://thekalmanfilter.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date
Tue, 13 Feb 2024 06:11:56 GMT
content-encoding
br
cf-cache-status
REVALIDATED
cf-bgj
minify
last-modified
Wed, 17 Jan 2024 02:18:00 GMT
server
cloudflare
cf-polished
origSize=6046
vary
Accept-Encoding
content-type
application/javascript
host-header
c2hhcmVkLmJsdWVob3N0LmNvbQ==
cf-ray
854aeab62cee6a77-TXL
js
www.googletagmanager.com/gtag/ 		266 KB
90 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://www.googletagmanager.com/gtag/js?id=GT-TQTV8KV
Requested by
Host: thekalmanfilter.com
URL: https://thekalmanfilter.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:811::2008 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Google Tag Manager /
Resource Hash
41f45416f58e2fe3dae4f7b5a887c4077a10cff3d814979c242e3d7caa5a77a4
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://thekalmanfilter.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date
Tue, 13 Feb 2024 06:11:56 GMT
content-encoding
br
strict-transport-security
max-age=31536000; includeSubDomains
server
Google Tag Manager
vary
Accept-Encoding
content-type
application/javascript; charset=UTF-8
access-control-allow-origin
*
cache-control
private, max-age=900
access-control-allow-credentials
true
cross-origin-resource-policy
cross-origin
access-control-allow-headers
Cache-Control
content-length
91689
x-xss-protection
0
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
expires
Tue, 13 Feb 2024 06:11:56 GMT
responsive-embeds.js
thekalmanfilter.com/wp-content/themes/twentytwentyone/assets/js/ 		514 B
348 B 		Script
General
Check archive.org
Download Go to
Full URL
https://thekalmanfilter.com/wp-content/themes/twentytwentyone/assets/js/responsive-embeds.js?ver=2.1
Requested by
Host: thekalmanfilter.com
URL: https://thekalmanfilter.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
66.235.200.154 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
travelsearch.com
Software
cloudflare /
Resource Hash
0b6d942711f1721a2458ec48d431a328384b7f955086cdcf4252b51e4a4ee2ff

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://thekalmanfilter.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date
Tue, 13 Feb 2024 06:11:56 GMT
content-encoding
br
cf-cache-status
REVALIDATED
cf-bgj
minify
last-modified
Wed, 17 Jan 2024 02:18:00 GMT
server
cloudflare
cf-polished
origSize=1127
vary
Accept-Encoding
content-type
application/javascript
host-header
c2hhcmVkLmJsdWVob3N0LmNvbQ==
cf-ray
854aeab409d06a77-TXL
enlighterjs.min.js
thekalmanfilter.com/wp-content/plugins/enlighter/cache/ 		62 KB
18 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://thekalmanfilter.com/wp-content/plugins/enlighter/cache/enlighterjs.min.js?ver=qE687FtPBzHX+qc
Requested by
Host: thekalmanfilter.com
URL: https://thekalmanfilter.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
66.235.200.154 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
travelsearch.com
Software
cloudflare /
Resource Hash
b2d31599822dae1353d655633c6dbd9454ef2138d172798f4a91119eedd6d89d

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://thekalmanfilter.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date
Tue, 13 Feb 2024 06:11:56 GMT
content-encoding
br
cf-cache-status
REVALIDATED
last-modified
Sat, 21 Jan 2023 02:33:30 GMT
server
cloudflare
vary
Accept-Encoding
content-type
application/javascript
host-header
c2hhcmVkLmJsdWVob3N0LmNvbQ==
cf-ray
854aeab409d16a77-TXL
print.css
thekalmanfilter.com/wp-content/themes/twentytwentyone/assets/css/ 		2 KB
857 B 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://thekalmanfilter.com/wp-content/themes/twentytwentyone/assets/css/print.css?ver=2.1
Requested by
Host: thekalmanfilter.com
URL: https://thekalmanfilter.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
66.235.200.154 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
travelsearch.com
Software
cloudflare /
Resource Hash
e137691c561e3a0ff6ed790709af1e5b95ded96549c4fef9e2a90e0635bcc99f

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://thekalmanfilter.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date
Tue, 13 Feb 2024 06:11:57 GMT
content-encoding
br
cf-cache-status
REVALIDATED
cf-bgj
minify
last-modified
Wed, 17 Jan 2024 02:18:00 GMT
server
cloudflare
cf-polished
origSize=2897
vary
Accept-Encoding
content-type
text/css
host-header
c2hhcmVkLmJsdWVob3N0LmNvbQ==
cf-ray
854aeab80fc86a77-TXL
90b8986f-6377-4d0b-b9cc-584e33fdcaaf
https://thekalmanfilter.com/ 		1 KB
0 		Other
General
Check archive.org
Download Go to
Full URL
blob:https://thekalmanfilter.com/90b8986f-6377-4d0b-b9cc-584e33fdcaaf
Requested by
Host: thekalmanfilter.com
URL: https://thekalmanfilter.com/
Protocol
BLOB
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
453cb806084fdabec32e286af2e88899f79022125c2527afffbec507975d2c22

Request headers

accept-language
de-DE,de;q=0.9
Referer
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

Content-Length
1245
Content-Type
text/javascript
hotjar-3096260.js
static.hotjar.com/c/ 		9 KB
4 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://static.hotjar.com/c/hotjar-3096260.js?sv=5
Requested by
Host: thekalmanfilter.com
URL: https://thekalmanfilter.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
18.66.97.49 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
server-18-66-97-49.fra56.r.cloudfront.net
Software
/
Resource Hash
d84d85de9729ed9edba8afde5b5be64d484e6867a1971bce839b0b7f2a01275b
Security Headers
Name Value
Strict-Transport-Security max-age=2592000; includeSubDomains
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://thekalmanfilter.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date
Tue, 13 Feb 2024 06:11:56 GMT
content-encoding
br
x-content-type-options
nosniff
strict-transport-security
max-age=2592000; includeSubDomains
via
1.1 f4137273db9ae377298b8f8daf5b93f0.cloudfront.net (CloudFront)
x-amz-cf-pop
FRA56-P2
etag
W/91d0a7c707e187da96ead7e0f495e6ed
vary
Accept-Encoding
x-cache
Miss from cloudfront
content-type
application/javascript; charset=UTF-8
access-control-allow-origin
*
cache-control
max-age=60
x-cache-hit
1
cross-origin-resource-policy
cross-origin
x-amz-cf-id
prKxwUB_w9F69OWThbYtqwLoLQtxJhSWOlYseqBzJdDubZ7wnaVHMQ==
gtm.js
www.googletagmanager.com/ 		159 KB
57 KB 		Script
General
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Download Go to
Full URL
https://www.googletagmanager.com/gtm.js?id=GTM-WLDBKLR
Requested by
Host: thekalmanfilter.com
URL: https://thekalmanfilter.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:811::2008 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Google Tag Manager /
Resource Hash
7ae4aae74b6b7abd318634c8c1b730be91da5adb615a37350b8a22403533b808
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://thekalmanfilter.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date
Tue, 13 Feb 2024 06:11:56 GMT
content-encoding
br
strict-transport-security
max-age=31536000; includeSubDomains
server
Google Tag Manager
vary
Accept-Encoding
content-type
application/javascript; charset=UTF-8
access-control-allow-origin
*
cache-control
private, max-age=900
access-control-allow-credentials
true
cross-origin-resource-policy
cross-origin
access-control-allow-headers
Cache-Control
content-length
58072
x-xss-protection
0
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
expires
Tue, 13 Feb 2024 06:11:56 GMT
wp-emoji-release.min.js
thekalmanfilter.com/wp-includes/js/ 		18 KB
5 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://thekalmanfilter.com/wp-includes/js/wp-emoji-release.min.js?ver=6.4.3
Requested by
Host: thekalmanfilter.com
URL: https://thekalmanfilter.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
66.235.200.154 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
travelsearch.com
Software
cloudflare /
Resource Hash
4f79a89d16a5f717110fe080c0bf90b7e05ff95a4c4983f64d33110bf5f9c230

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://thekalmanfilter.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date
Tue, 13 Feb 2024 06:11:57 GMT
content-encoding
br
cf-cache-status
REVALIDATED
last-modified
Thu, 30 Mar 2023 02:15:16 GMT
server
cloudflare
vary
Accept-Encoding
content-type
application/javascript
host-header
c2hhcmVkLmJsdWVob3N0LmNvbQ==
cf-ray
854aeab81fd66a77-TXL
modules.332f72b7517862cb5491.js
script.hotjar.com/ 		218 KB
55 KB 		Script
General
Check archive.org
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Full URL
https://script.hotjar.com/modules.332f72b7517862cb5491.js
Requested by
Host: static.hotjar.com
URL: https://static.hotjar.com/c/hotjar-3096260.js?sv=5
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
99.84.88.30 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
server-99-84-88-30.muc50.r.cloudfront.net
Software
/
Resource Hash
ede37311a061ba59683f41def4a08d64dc07ab124288e2fb1d3e7e4b0e482e9b
Security Headers
Name Value
Strict-Transport-Security max-age=2592000; includeSubDomains
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://thekalmanfilter.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date
Mon, 12 Feb 2024 15:51:06 GMT
content-encoding
br
x-content-type-options
nosniff
strict-transport-security
max-age=2592000; includeSubDomains
via
1.1 7497b6df995aa2d58f27a725f51d6240.cloudfront.net (CloudFront)
x-amz-cf-pop
MUC50-C1
age
51651
x-cache
Hit from cloudfront
cross-origin-resource-policy
cross-origin
content-length
55357
last-modified
Mon, 12 Feb 2024 15:50:22 GMT
etag
"b01352c7d6ce65a19929984f9a17c8cf"
vary
Accept-Encoding
content-type
application/javascript; charset=utf-8
access-control-allow-origin
*
cache-control
max-age=31536000
accept-ranges
bytes
x-robots-tag
none
x-amz-cf-id
09fm5KzGzUdlg4YDBYvruzRkX3mm3U7w6t9ST0SifF5Q4bLPxeEyzA==
analytics.js
www.google-analytics.com/ 		52 KB
21 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://www.google-analytics.com/analytics.js
Requested by
Host: www.googletagmanager.com
URL: https://www.googletagmanager.com/gtm.js?id=GTM-WLDBKLR
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:82b::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Golfe2 /
Resource Hash
de36e50194320a7d3ef1ace9bd34a875a8bd458b253c061979dd628e9bf49afd
Security Headers
Name Value
Strict-Transport-Security max-age=10886400; includeSubDomains; preload
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://thekalmanfilter.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

strict-transport-security
max-age=10886400; includeSubDomains; preload
content-encoding
gzip
x-content-type-options
nosniff
date
Tue, 13 Feb 2024 05:48:09 GMT
last-modified
Tue, 12 Dec 2023 18:09:08 GMT
server
Golfe2
age
1428
vary
Accept-Encoding
content-type
text/javascript
cache-control
public, max-age=7200
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
20994
expires
Tue, 13 Feb 2024 07:48:09 GMT
js
www.googletagmanager.com/gtag/ 		267 KB
90 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://www.googletagmanager.com/gtag/js?id=GT-TQTV8KV&l=dataLayer&cx=c
Requested by
Host: www.googletagmanager.com
URL: https://www.googletagmanager.com/gtm.js?id=GTM-WLDBKLR
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:811::2008 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Google Tag Manager /
Resource Hash
748e78c68bc4d6705c7e3d65c0b01560be3639b96a88b420d9c5fefbd37ba30c
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://thekalmanfilter.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

date
Tue, 13 Feb 2024 06:11:57 GMT
content-encoding
br
strict-transport-security
max-age=31536000; includeSubDomains
server
Google Tag Manager
vary
Accept-Encoding
content-type
application/javascript; charset=UTF-8
access-control-allow-origin
*
cache-control
private, max-age=900
access-control-allow-credentials
true
cross-origin-resource-policy
cross-origin
access-control-allow-headers
Cache-Control
content-length
92099
x-xss-protection
0
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
expires
Tue, 13 Feb 2024 06:11:57 GMT
collect
region1.google-analytics.com/g/ 		0
256 B 		Ping
General
Check archive.org
Download Go to
Full URL
https://region1.google-analytics.com/g/collect?v=2&tid=G-JGLWMG7471&gtm=45Pe4270v899863440za200&_p=1707804716788&gcd=13l3l3l3l1&npa=0&dma_cps=sypham&dma=1&gdid=dZTNiMT&cid=1395003445.1707804717&ul=en-us&sr=1600x1200&uaa=&uab=&uafvl=&uamb=0&uam=&uap=&uapv=&uaw=0&pscdl=noapi&_s=1&sid=1707804717&sct=1&seg=0&dl=https%3A%2F%2Fthekalmanfilter.com%2F&dt=The%20Kalman%20Filter%20-%20we%20help%20students%20master%20the%20Kalman%20Filter&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=1924
Requested by
Host: www.googletagmanager.com
URL: https://www.googletagmanager.com/gtag/js?id=GT-TQTV8KV
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2001:4860:4802:32::36 , United States, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Golfe2 /
Resource Hash
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://thekalmanfilter.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36

Response headers

pragma
no-cache
date
Tue, 13 Feb 2024 06:11:57 GMT
server
Golfe2
content-type
text/plain
access-control-allow-origin
https://thekalmanfilter.com
cache-control
no-cache, no-store, must-revalidate
access-control-allow-credentials
true
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
0
expires
Fri, 01 Jan 1990 00:00:00 GMT
collect
www.google-analytics.com/j/ 		4 B
211 B 		XHR
General
Check archive.org
Download Go to
Full URL
https://www.google-analytics.com/j/collect?v=1&_v=j101&a=1509663064&t=pageview&_s=1&dl=https%3A%2F%2Fthekalmanfilter.com%2F&ul=en-us&de=UTF-8&dt=The%20Kalman%20Filter%20-%20we%20help%20students%20master%20the%20Kalman%20Filter&sd=24-bit&sr=1600x1200&vp=1600x1200&je=0&_u=YADAAEABAAAAACAAI~&jid=1177517934&gjid=236170531&cid=1395003445.1707804717&tid=UA-169197352-1&_gid=743454496.1707804717&_r=1&_slc=1&gtm=45He4270n81WLDBKLRv846477178za200&gcd=13l3l3l3l1&dma_cps=sypham&dma=1&z=2129815656
Requested by
Host: www.google-analytics.com
URL: https://www.google-analytics.com/analytics.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:82b::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Golfe2 /
Resource Hash
aec60bc104db041b1512185839f18f52986df7e569e5445f740dd60f763fbca8
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

Referer
https://thekalmanfilter.com/
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36
Content-Type
text/plain

Response headers

pragma
no-cache
date
Tue, 13 Feb 2024 06:11:57 GMT
x-content-type-options
nosniff
last-modified
Sun, 17 May 1998 03:00:00 GMT
server
Golfe2
content-type
text/plain
access-control-allow-origin
https://thekalmanfilter.com
cache-control
no-cache, no-store, must-revalidate
access-control-allow-credentials
true
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
4
expires
Fri, 01 Jan 1990 00:00:00 GMT
collect
stats.g.doubleclick.net/j/ 		1 B
348 B 		XHR
General
Check archive.org
Download Go to
Full URL
https://stats.g.doubleclick.net/j/collect?t=dc&aip=1&_r=3&v=1&_v=j101&tid=UA-169197352-1&cid=1395003445.1707804717&jid=1177517934&gjid=236170531&_gid=743454496.1707804717&_u=YADAAEAAAAAAACAAI~&z=1422060601
Requested by
Host: www.google-analytics.com
URL: https://www.google-analytics.com/analytics.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:400c:c00::9c Brussels, Belgium, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Golfe2 /
Resource Hash
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b
Security Headers
Name Value
Strict-Transport-Security max-age=10886400; includeSubDomains; preload
X-Content-Type-Options nosniff

Request headers

Referer
https://thekalmanfilter.com/
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.160 Safari/537.36
Content-Type
text/plain

Response headers

pragma
no-cache
strict-transport-security
max-age=10886400; includeSubDomains; preload
date
Tue, 13 Feb 2024 06:11:57 GMT
x-content-type-options
nosniff
last-modified
Sun, 17 May 1998 03:00:00 GMT
server
Golfe2
content-type
text/plain
access-control-allow-origin
https://thekalmanfilter.com
cache-control
no-cache, no-store, must-revalidate
access-control-allow-credentials
true
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
1
expires
Fri, 01 Jan 1990 00:00:00 GMT

Verdicts & Comments Add Verdict or Comment

28 JavaScript Global Variables

These are the non-standard "global" variables defined on the window object. These can be helpful in identifying possible client-side frameworks and code.

object| 0 string| gtm4wp_datalayer_name object| dataLayer object| _wpemojiSettings function| gtag function| hj object| _hjSettings function| twentytwentyoneResponsiveEmbeds object| EnlighterJS function| EnlighterJSINIT function| twentytwentyoneToggleAriaExpanded function| twentytwentyoneCollapseMenuOnClickOutside function| twentytwentyoneSubmenuPosition function| twentytwentyoneExpandSubMenu object| hjSiteSettings function| hjBootstrap object| hjBootstrapCalled object| hjLazyModules object| google_tag_manager object| google_tag_data string| GoogleAnalyticsObject function| ga function| onYouTubeIframeAPIReady object| gaGlobal object| twemoji object| wp object| gaplugins object| gaData

6 Cookies

Domain/Path Name / Value
.thekalmanfilter.com/ Name: _ga_JGLWMG7471
Value: GS1.1.1707804717.1.0.1707804717.0.0.0
.thekalmanfilter.com/ Name: _hjSessionUser_3096260
Value: eyJpZCI6ImYxM2EyMGUxLWZmZDMtNTg3NS04OThlLTU3NGMwNTQ4YjBjNyIsImNyZWF0ZWQiOjE3MDc4MDQ3MTcxNTYsImV4aXN0aW5nIjpmYWxzZX0=
.thekalmanfilter.com/ Name: _hjSession_3096260
Value: eyJpZCI6IjRmM2M0YTNkLTY2ZjYtNDNjMS05MDEyLTllYTQ1NzIzNDgyYyIsImMiOjE3MDc4MDQ3MTcxNTcsInMiOjAsInIiOjAsInNiIjowLCJzciI6MCwic2UiOjAsImZzIjoxLCJzcCI6MH0=
.thekalmanfilter.com/ Name: _ga
Value: GA1.2.1395003445.1707804717
.thekalmanfilter.com/ Name: _gid
Value: GA1.2.743454496.1707804717
.thekalmanfilter.com/ Name: _gat_UA-169197352-1
Value: 1

Indicators

This is a term in the security industry to describe indicators such as IPs, Domains, Hashes, etc. This does not imply that any of these indicate malicious activity.

region1.google-analytics.com
script.hotjar.com
static.hotjar.com
stats.g.doubleclick.net
thekalmanfilter.com
www.google-analytics.com
www.googletagmanager.com
18.66.97.49
2001:4860:4802:32::36
2a00:1450:4001:811::2008
2a00:1450:4001:82b::200e
2a00:1450:400c:c00::9c
66.235.200.154
99.84.88.30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