www.tednaifeh.com
Open in
urlscan Pro
50.115.18.28
Public Scan
Effective URL: https://www.tednaifeh.com/
Submission: On October 08 via api from US — Scanned from DE
Summary
TLS certificate: Issued by cPanel, Inc. Certification Authority on August 13th 2022. Valid for: 3 months.
This is the only time www.tednaifeh.com was scanned on urlscan.io!
urlscan.io Verdict: No classification
Domain & IP information
IP Address | AS Autonomous System | ||
---|---|---|---|
1 28 | 50.115.18.28 50.115.18.28 | 53861 (AS-KGIX) (AS-KGIX) | |
4 | 2a00:1450:400... 2a00:1450:4001:82a::200a | 15169 (GOOGLE) (GOOGLE) | |
2 | 192.0.76.3 192.0.76.3 | 2635 (AUTOMATTIC) (AUTOMATTIC) | |
4 | 2a00:1450:400... 2a00:1450:4001:803::2003 | 15169 (GOOGLE) (GOOGLE) | |
2 | 2a04:fa87:fff... 2a04:fa87:fffe::c000:4902 | 2635 (AUTOMATTIC) (AUTOMATTIC) | |
39 | 5 |
ASN53861 (AS-KGIX, US)
PTR: 28-18-115-50.tpa.kgix.net
tednaifeh.com | |
www.tednaifeh.com |
Apex Domain Subdomains |
Transfer | |
---|---|---|
28 |
tednaifeh.com
1 redirects
tednaifeh.com www.tednaifeh.com |
5 MB |
4 |
gstatic.com
fonts.gstatic.com |
160 KB |
4 |
googleapis.com
fonts.googleapis.com — Cisco Umbrella Rank: 118 |
3 KB |
2 |
gravatar.com
secure.gravatar.com — Cisco Umbrella Rank: 2593 |
3 KB |
2 |
wp.com
stats.wp.com — Cisco Umbrella Rank: 3434 pixel.wp.com — Cisco Umbrella Rank: 2931 |
3 KB |
39 | 5 |
Domain | Requested by | |
---|---|---|
27 | www.tednaifeh.com |
www.tednaifeh.com
|
4 | fonts.gstatic.com |
fonts.googleapis.com
|
4 | fonts.googleapis.com |
www.tednaifeh.com
|
2 | secure.gravatar.com |
www.tednaifeh.com
|
1 | pixel.wp.com |
www.tednaifeh.com
|
1 | stats.wp.com |
www.tednaifeh.com
|
1 | tednaifeh.com | 1 redirects |
39 | 7 |
This site contains links to these domains. Also see Links.
Domain |
---|
www.facebook.com |
twitter.com |
pinterest.com |
www.instagram.com |
tednaifeh.tumblr.com |
Subject Issuer | Validity | Valid | |
---|---|---|---|
tednaifeh.com cPanel, Inc. Certification Authority |
2022-08-13 - 2022-11-11 |
3 months | crt.sh |
upload.video.google.com GTS CA 1C3 |
2022-09-12 - 2022-12-05 |
3 months | crt.sh |
*.wp.com Sectigo RSA Domain Validation Secure Server CA |
2022-06-11 - 2023-07-12 |
a year | crt.sh |
*.gstatic.com GTS CA 1C3 |
2022-09-12 - 2022-12-05 |
3 months | crt.sh |
*.gravatar.com Sectigo RSA Domain Validation Secure Server CA |
2020-08-14 - 2022-11-16 |
2 years | crt.sh |
This page contains 1 frames:
Primary Page:
https://www.tednaifeh.com/
Frame ID: 516759DD67786FFED79AF8D1A60D0872
Requests: 39 HTTP requests in this frame
Screenshot
Page Title
Ted Naifeh – New York Times Bestselling Author of COURTNEY CRUMRIN, PRINCESS UGG, NIGHT'S DOMINION.Page URL History Show full URLs
-
http://tednaifeh.com/
HTTP 301
https://www.tednaifeh.com/ Page URL
Detected technologies
WordPress (CMS) ExpandDetected patterns
- <link rel=["']stylesheet["'] [^>]+/wp-(?:content|includes)/
- /wp-(?:content|includes)/
Google Font API (Font Scripts) Expand
Detected patterns
- <link[^>]* href=[^>]+fonts\.(?:googleapis|google)\.com
jQuery (JavaScript Libraries) Expand
Detected patterns
- jquery.*\.js(?:\?ver(?:sion)?=([\d.]+))?
jQuery Migrate (JavaScript Libraries) Expand
Detected patterns
- jquery[.-]migrate(?:-([\d.]+))?(?:\.min)?\.js(?:\?ver=([\d.]+))?
Page Statistics
19 Outgoing links
These are links going to different origins than the main page.
Search URL Search Domain Scan URL
Search URL Search Domain Scan URL
Search URL Search Domain Scan URL
Search URL Search Domain Scan URL
Search URL Search Domain Scan URL
Search URL Search Domain Scan URL
Search URL Search Domain Scan URL
Search URL Search Domain Scan URL
Search URL Search Domain Scan URL
Search URL Search Domain Scan URL
Search URL Search Domain Scan URL
Search URL Search Domain Scan URL
Search URL Search Domain Scan URL
Search URL Search Domain Scan URL
Search URL Search Domain Scan URL
Search URL Search Domain Scan URL
Search URL Search Domain Scan URL
Search URL Search Domain Scan URL
Search URL Search Domain Scan URL
Page URL History
This captures the URL locations of the websites, including HTTP redirects and client-side redirects via JavaScript or Meta fields.
-
http://tednaifeh.com/
HTTP 301
https://www.tednaifeh.com/ Page URL
Redirected requests
There were HTTP redirect chains for the following requests:
39 HTTP transactions
Method Protocol |
Resource Path |
Size x-fer |
Type MIME-Type |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
GET H2 |
Primary Request
/
www.tednaifeh.com/ Redirect Chain
|
62 KB 17 KB |
Document
text/html |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
Redirect headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H2 |
style.min.css
www.tednaifeh.com/wp-includes/css/dist/block-library/ |
87 KB 10 KB |
Stylesheet
text/css |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H2 |
mediaelementplayer-legacy.min.css
www.tednaifeh.com/wp-includes/js/mediaelement/ |
11 KB 2 KB |
Stylesheet
text/css |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H2 |
wp-mediaelement.min.css
www.tednaifeh.com/wp-includes/js/mediaelement/ |
4 KB 1 KB |
Stylesheet
text/css |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H3 |
wp-emoji-release.min.js
www.tednaifeh.com/wp-includes/js/ |
18 KB 5 KB |
Script
application/javascript |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H2 |
style.css
www.tednaifeh.com/wp-content/themes/ashe-pro-premium/ |
50 KB 8 KB |
Stylesheet
text/css |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H2 |
responsive.css
www.tednaifeh.com/wp-content/themes/ashe-pro-premium/assets/css/ |
12 KB 2 KB |
Stylesheet
text/css |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H2 |
fontello.css
www.tednaifeh.com/wp-content/themes/ashe-pro-premium/assets/css/ |
1 KB 419 B |
Stylesheet
text/css |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H2 |
slick.css
www.tednaifeh.com/wp-content/themes/ashe-pro-premium/assets/css/ |
1 KB 421 B |
Stylesheet
text/css |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H2 |
perfect-scrollbar.css
www.tednaifeh.com/wp-content/themes/ashe-pro-premium/assets/css/ |
1 KB 336 B |
Stylesheet
text/css |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H2 |
css
fonts.googleapis.com/ |
399 B 823 B |
Stylesheet
text/css |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H2 |
css
fonts.googleapis.com/ |
4 KB 625 B |
Stylesheet
text/css |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H2 |
css
fonts.googleapis.com/ |
8 KB 643 B |
Stylesheet
text/css |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H2 |
css
fonts.googleapis.com/ |
15 KB 908 B |
Stylesheet
text/css |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H2 |
jetpack.css
www.tednaifeh.com/wp-content/plugins/jetpack/css/ |
84 KB 15 KB |
Stylesheet
text/css |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H2 |
jquery.min.js
www.tednaifeh.com/wp-includes/js/jquery/ |
87 KB 29 KB |
Script
application/javascript |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H2 |
jquery-migrate.min.js
www.tednaifeh.com/wp-includes/js/jquery/ |
11 KB 4 KB |
Script
application/javascript |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H3 |
56969450.jpg
www.tednaifeh.com/wp-content/uploads/2021/08/ |
1 MB 1 MB |
Image
image/jpeg |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H3 |
custom-plugins.js
www.tednaifeh.com/wp-content/themes/ashe-pro-premium/assets/js/ |
1 MB 448 KB |
Script
application/javascript |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H3 |
custom-scripts.js
www.tednaifeh.com/wp-content/themes/ashe-pro-premium/assets/js/ |
24 KB 5 KB |
Script
application/javascript |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H2 |
e-202240.js
stats.wp.com/ |
9 KB 3 KB |
Script
application/javascript |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H3 |
/
www.tednaifeh.com/ |
12 KB 12 KB |
Image
text/html |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H3 |
Courtney_2019_color.jpg
www.tednaifeh.com/wp-content/uploads/2021/06/ |
324 KB 325 KB |
Image
image/jpeg |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H3 |
Crumrin-Chronicles_v1-letters-pg097.jpg
www.tednaifeh.com/wp-content/uploads/2021/06/ |
168 KB 168 KB |
Image
image/jpeg |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H3 |
KRISS_poster01-color.jpg
www.tednaifeh.com/wp-content/uploads/2021/06/ |
220 KB 220 KB |
Image
image/jpeg |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H3 |
NIGHTDOM_06_pg09.jpg
www.tednaifeh.com/wp-content/uploads/2021/06/ |
337 KB 337 KB |
Image
image/jpeg |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H3 |
Polly6_cover_color.jpg
www.tednaifeh.com/wp-content/uploads/2021/06/ |
850 KB 850 KB |
Image
image/jpeg |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H3 |
Ugg1_Cover_colors.jpg
www.tednaifeh.com/wp-content/uploads/2021/06/ |
863 KB 863 KB |
Image
image/jpeg |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H3 |
Witch-for-Hire_v1-letters-pg112.jpg
www.tednaifeh.com/wp-content/uploads/2021/06/ |
191 KB 191 KB |
Image
image/jpeg |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H2 |
memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-muw.woff2
fonts.gstatic.com/s/opensans/v34/ |
44 KB 44 KB |
Font
font/woff2 |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H2 |
a8IENpD3CDX-4zrWfr1VY879qFF05pZ7PIIP.woff2
fonts.gstatic.com/s/imfellenglishsc/v16/ |
56 KB 56 KB |
Font
font/woff2 |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H2 |
nuFiD-vYSZviVYUb_rj3ij__anPXDTzYgA.woff2
fonts.gstatic.com/s/playfairdisplay/v30/ |
35 KB 35 KB |
Font
font/woff2 |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H2 |
ke80OhoaMkR6-hSn7kbHVoFf7ZfgMPr_nQIpBcwXLg.woff2
fonts.gstatic.com/s/playfairdisplaysc/v15/ |
25 KB 25 KB |
Font
font/woff2 |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H2 |
8683ce5bf046bd7c5179b969b188adea
secure.gravatar.com/avatar/ |
901 B 1 KB |
Image
image/jpeg |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H3 |
CCCv1_500px.jpg
www.tednaifeh.com/wp-content/uploads/2021/06/ |
405 KB 405 KB |
Image
image/jpeg |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H2 |
1409d41f47c923da913ee9c56504c6a5
secure.gravatar.com/avatar/ |
1 KB 1 KB |
Image
image/jpeg |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H3 |
Crumrin-Chronicles_v1-letters-pg005.jpg
www.tednaifeh.com/wp-content/uploads/2021/06/ |
240 KB 240 KB |
Image
image/jpeg |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H2 |
g.gif
pixel.wp.com/ |
50 B 116 B |
Image
image/gif |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
GET H3 |
fontello.woff2
www.tednaifeh.com/wp-content/themes/ashe-pro-premium/assets/fonts/ |
3 KB 3 KB |
Font
font/woff2 |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
General
Request headers
Response headers
|
Verdicts & Comments Add Verdict or Comment
24 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| onbeforeinput object| oncontextlost object| oncontextrestored function| structuredClone object| launchQueue object| onbeforematch function| getScreenDetails function| queryLocalFonts object| navigation object| _wpemojiSettings function| $ function| jQuery object| ___FONT_AWESOME___ object| FontAwesomeConfig object| FontAwesome function| stickyMenu function| stickySidebar function| ashePreloader object| _stq function| st_go function| linktracker_init object| wpcom object| twemoji object| wp0 Cookies
Cookies are little pieces of information stored in the browser of a user. Whenever a user visits the site again, he will also send his cookie values, thus allowing the website to re-identify him even if he changed locations. This is how permanent logins work.
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.
fonts.googleapis.com
fonts.gstatic.com
pixel.wp.com
secure.gravatar.com
stats.wp.com
tednaifeh.com
www.tednaifeh.com
192.0.76.3
2a00:1450:4001:803::2003
2a00:1450:4001:82a::200a
2a04:fa87:fffe::c000:4902
50.115.18.28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