Submitted URL: http://lovely-app.com/
Effective URL: https://lovely-app.com/
Submission: On May 07 via api from GB — Scanned from GB

Summary

This website contacted 1 IPs in 1 countries across 1 domains to perform 14 HTTP transactions. The main IP is 2606:4700:3108::ac42:28d3, located in United States and belongs to CLOUDFLARENET, US. The main domain is lovely-app.com. The Cisco Umbrella rank of the primary domain is 76679.
TLS certificate: Issued by Cloudflare Inc ECC CA-3 on June 17th 2021. Valid for: a year.
This is the only time lovely-app.com was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
1 15 2606:4700:310... 13335 (CLOUDFLAR...)
14 1
Apex Domain
Subdomains
Transfer
15 lovely-app.com
lovely-app.com — Cisco Umbrella Rank: 76679
31 KB
14 1
Domain Requested by
15 lovely-app.com 1 redirects lovely-app.com
14 1

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

Domain
support.cloudflare.com
www.cloudflare.com
Subject Issuer Validity Valid
sni.cloudflaressl.com
Cloudflare Inc ECC CA-3
2021-06-17 -
2022-06-16
a year crt.sh

This page contains 1 frames:

Primary Page: https://lovely-app.com/
Frame ID: BA6AE8A7E3259161540D07D15F1D6C76
Requests: 14 HTTP requests in this frame

Screenshot

Page Title

lovely-app.com | 521: Web server is down

Page URL History Show full URLs

  1. http://lovely-app.com/ HTTP 301
    https://lovely-app.com/ Page URL
  2. https://lovely-app.com/ Page URL

Page Statistics

14
Requests

100 %
HTTPS

100 %
IPv6

1
Domains

1
Subdomains

1
IPs

1
Countries

30 kB
Transfer

39 kB
Size

2
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://lovely-app.com/ HTTP 301
    https://lovely-app.com/ Page URL
  2. https://lovely-app.com/ Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

Request Chain 0
  • http://lovely-app.com/ HTTP 301
  • https://lovely-app.com/

14 HTTP transactions

Resource
Path
Size
x-fer
Type
MIME-Type
/
lovely-app.com/
Redirect Chain
  • http://lovely-app.com/
  • https://lovely-app.com/
7 KB
8 KB
Document
General
Full URL
https://lovely-app.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700:3108::ac42:28d3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
1854aa4ba7a5914dbc33f6a970876bb31340084ca17f86edbd31b83d3fb3e34b
Security Headers
Name Value
X-Frame-Options SAMEORIGIN

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.41 Safari/537.36
accept-language
en-GB,en;q=0.9

Response headers

cache-control
private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
cf-ray
7078c9a149977562-LHR
content-type
text/html; charset=UTF-8
date
Sat, 07 May 2022 09:04:20 GMT
expires
Thu, 01 Jan 1970 00:00:01 GMT
referrer-policy
same-origin
server
cloudflare
x-frame-options
SAMEORIGIN

Redirect headers

CF-RAY
7078c9a0bf0c8e0e-LHR
Cache-Control
max-age=3600
Connection
keep-alive
Date
Sat, 07 May 2022 09:04:20 GMT
Expires
Sat, 07 May 2022 10:04:20 GMT
Location
https://lovely-app.com/
NEL
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
Report-To
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=5Tago4IRyOzFQGxMmRvFxp%2BhiCpZiVB3a6Xsq0zD9Wmbl%2BBdD7YT12aNGY%2FoR1EjJsmE0MImXOeyR5vkz3qzQG2tIkdnyVIIZq8ZouVLO%2FcMlbmWGLNaSLoO89Ur0KSVxpFw7UOIIT%2FClYwR"}],"group":"cf-nel","max_age":604800}
Server
cloudflare
Transfer-Encoding
chunked
Vary
Accept-Encoding
main.css
lovely-app.com/cdn-cgi/styles/
7 KB
2 KB
Stylesheet
General
Full URL
https://lovely-app.com/cdn-cgi/styles/main.css
Requested by
Host: lovely-app.com
URL: https://lovely-app.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700:3108::ac42:28d3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
fb8729e2f9515b7d1d4d3ec9611b73b8d0d144070510d8607c3b0251a5f26fe7
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options DENY

Request headers

accept-language
en-GB,en;q=0.9
Referer
https://lovely-app.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.41 Safari/537.36

Response headers

date
Sat, 07 May 2022 09:04:20 GMT
content-encoding
gzip
x-content-type-options
nosniff
last-modified
Fri, 29 Apr 2022 17:17:13 GMT
server
cloudflare
etag
W/"626c1d99-1d02"
x-frame-options
DENY
content-type
text/css
cache-control
max-age=7200, public
cf-ray
7078c9a1ca0a7562-LHR
vary
Accept-Encoding
expires
Sat, 07 May 2022 11:04:20 GMT
cf-icon-browser.png
lovely-app.com/cdn-cgi/images/
484 B
572 B
Image
General
Full URL
https://lovely-app.com/cdn-cgi/images/cf-icon-browser.png
Requested by
Host: lovely-app.com
URL: https://lovely-app.com/cdn-cgi/styles/main.css
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700:3108::ac42:28d3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options DENY

Request headers

accept-language
en-GB,en;q=0.9
Referer
https://lovely-app.com/cdn-cgi/styles/main.css
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.41 Safari/537.36

Response headers

date
Sat, 07 May 2022 09:04:20 GMT
x-content-type-options
nosniff
last-modified
Fri, 29 Apr 2022 17:17:13 GMT
server
cloudflare
etag
"626c1d99-1e4"
x-frame-options
DENY
content-type
image/png
cache-control
max-age=7200, public
accept-ranges
bytes
cf-ray
7078c9a1fa4a7562-LHR
vary
Accept-Encoding
content-length
484
expires
Sat, 07 May 2022 11:04:20 GMT
cf-icon-ok.png
lovely-app.com/cdn-cgi/images/
946 B
1021 B
Image
General
Full URL
https://lovely-app.com/cdn-cgi/images/cf-icon-ok.png
Requested by
Host: lovely-app.com
URL: https://lovely-app.com/cdn-cgi/styles/main.css
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700:3108::ac42:28d3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options DENY

Request headers

accept-language
en-GB,en;q=0.9
Referer
https://lovely-app.com/cdn-cgi/styles/main.css
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.41 Safari/537.36

Response headers

date
Sat, 07 May 2022 09:04:20 GMT
x-content-type-options
nosniff
last-modified
Fri, 29 Apr 2022 17:17:13 GMT
server
cloudflare
etag
"626c1d99-3b2"
x-frame-options
DENY
content-type
image/png
cache-control
max-age=7200, public
accept-ranges
bytes
cf-ray
7078c9a1fa4b7562-LHR
vary
Accept-Encoding
content-length
946
expires
Sat, 07 May 2022 11:04:20 GMT
cf-icon-cloud.png
lovely-app.com/cdn-cgi/images/
1 KB
2 KB
Image
General
Full URL
https://lovely-app.com/cdn-cgi/images/cf-icon-cloud.png
Requested by
Host: lovely-app.com
URL: https://lovely-app.com/cdn-cgi/styles/main.css
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700:3108::ac42:28d3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
3a223426c67a0a33ff57af68a57fb589fea36af2a6e8f9dae7798c77471e0e58
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options DENY

Request headers

accept-language
en-GB,en;q=0.9
Referer
https://lovely-app.com/cdn-cgi/styles/main.css
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.41 Safari/537.36

Response headers

date
Sat, 07 May 2022 09:04:20 GMT
x-content-type-options
nosniff
last-modified
Fri, 29 Apr 2022 17:17:13 GMT
server
cloudflare
etag
"626c1d99-5cc"
x-frame-options
DENY
content-type
image/png
cache-control
max-age=7200, public
accept-ranges
bytes
cf-ray
7078c9a1fa4c7562-LHR
vary
Accept-Encoding
content-length
1484
expires
Sat, 07 May 2022 11:04:20 GMT
cf-icon-server.png
lovely-app.com/cdn-cgi/images/
1 KB
1 KB
Image
General
Full URL
https://lovely-app.com/cdn-cgi/images/cf-icon-server.png
Requested by
Host: lovely-app.com
URL: https://lovely-app.com/cdn-cgi/styles/main.css
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700:3108::ac42:28d3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
41553a537f85839927155af093b7bfa1987215f474ed038714609cc48812ea3b
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options DENY

Request headers

accept-language
en-GB,en;q=0.9
Referer
https://lovely-app.com/cdn-cgi/styles/main.css
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.41 Safari/537.36

Response headers

date
Sat, 07 May 2022 09:04:20 GMT
x-content-type-options
nosniff
last-modified
Fri, 29 Apr 2022 17:17:13 GMT
server
cloudflare
etag
"626c1d99-568"
x-frame-options
DENY
content-type
image/png
cache-control
max-age=7200, public
accept-ranges
bytes
cf-ray
7078c9a1fa4d7562-LHR
vary
Accept-Encoding
content-length
1384
expires
Sat, 07 May 2022 11:04:20 GMT
cf-icon-error.png
lovely-app.com/cdn-cgi/images/
854 B
930 B
Image
General
Full URL
https://lovely-app.com/cdn-cgi/images/cf-icon-error.png
Requested by
Host: lovely-app.com
URL: https://lovely-app.com/cdn-cgi/styles/main.css
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700:3108::ac42:28d3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options DENY

Request headers

accept-language
en-GB,en;q=0.9
Referer
https://lovely-app.com/cdn-cgi/styles/main.css
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.41 Safari/537.36

Response headers

date
Sat, 07 May 2022 09:04:20 GMT
x-content-type-options
nosniff
last-modified
Fri, 29 Apr 2022 17:17:13 GMT
server
cloudflare
etag
"626c1d99-356"
x-frame-options
DENY
content-type
image/png
cache-control
max-age=7200, public
accept-ranges
bytes
cf-ray
7078c9a1fa4e7562-LHR
vary
Accept-Encoding
content-length
854
expires
Sat, 07 May 2022 11:04:20 GMT
Primary Request /
lovely-app.com/
7 KB
7 KB
Document
General
Full URL
https://lovely-app.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700:3108::ac42:28d3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
afeb6162ecf8f9c5e7fa54c381fcd0124599742830768201628b1e714ee2b2cd
Security Headers
Name Value
X-Frame-Options SAMEORIGIN

Request headers

Referer
https://lovely-app.com/
Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.41 Safari/537.36
accept-language
en-GB,en;q=0.9

Response headers

cache-control
private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
cf-ray
7078c9a22a8c7562-LHR
content-type
text/html; charset=UTF-8
date
Sat, 07 May 2022 09:04:21 GMT
expires
Thu, 01 Jan 1970 00:00:01 GMT
referrer-policy
same-origin
server
cloudflare
x-frame-options
SAMEORIGIN
main.css
lovely-app.com/cdn-cgi/styles/
7 KB
2 KB
Stylesheet
General
Full URL
https://lovely-app.com/cdn-cgi/styles/main.css
Requested by
Host: lovely-app.com
URL: https://lovely-app.com/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700:3108::ac42:28d3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
fb8729e2f9515b7d1d4d3ec9611b73b8d0d144070510d8607c3b0251a5f26fe7
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options DENY

Request headers

accept-language
en-GB,en;q=0.9
Referer
https://lovely-app.com/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.41 Safari/537.36

Response headers

date
Sat, 07 May 2022 09:04:21 GMT
content-encoding
gzip
x-content-type-options
nosniff
last-modified
Fri, 29 Apr 2022 17:17:13 GMT
server
cloudflare
etag
W/"626c1d99-1d02"
x-frame-options
DENY
content-type
text/css
cache-control
max-age=7200, public
cf-ray
7078c9a3cc6e7562-LHR
vary
Accept-Encoding
expires
Sat, 07 May 2022 11:04:21 GMT
cf-icon-browser.png
lovely-app.com/cdn-cgi/images/
484 B
543 B
Image
General
Full URL
https://lovely-app.com/cdn-cgi/images/cf-icon-browser.png
Requested by
Host: lovely-app.com
URL: https://lovely-app.com/cdn-cgi/styles/main.css
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700:3108::ac42:28d3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
78a7d8b29cabf16831417dba1b9bbe36fae0d060a35a495e8f10e9663b3c9e65
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options DENY

Request headers

accept-language
en-GB,en;q=0.9
Referer
https://lovely-app.com/cdn-cgi/styles/main.css
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.41 Safari/537.36

Response headers

date
Sat, 07 May 2022 09:04:21 GMT
x-content-type-options
nosniff
last-modified
Fri, 29 Apr 2022 17:17:13 GMT
server
cloudflare
etag
"626c1d99-1e4"
x-frame-options
DENY
content-type
image/png
cache-control
max-age=7200, public
accept-ranges
bytes
cf-ray
7078c9a40ca27562-LHR
vary
Accept-Encoding
content-length
484
expires
Sat, 07 May 2022 11:04:21 GMT
cf-icon-ok.png
lovely-app.com/cdn-cgi/images/
946 B
1005 B
Image
General
Full URL
https://lovely-app.com/cdn-cgi/images/cf-icon-ok.png
Requested by
Host: lovely-app.com
URL: https://lovely-app.com/cdn-cgi/styles/main.css
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700:3108::ac42:28d3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
ed732380ee3ff0f2d841784da213c8c05d2b5ae187a5217b419d21cae5cedb1b
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options DENY

Request headers

accept-language
en-GB,en;q=0.9
Referer
https://lovely-app.com/cdn-cgi/styles/main.css
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.41 Safari/537.36

Response headers

date
Sat, 07 May 2022 09:04:21 GMT
x-content-type-options
nosniff
last-modified
Fri, 29 Apr 2022 17:17:13 GMT
server
cloudflare
etag
"626c1d99-3b2"
x-frame-options
DENY
content-type
image/png
cache-control
max-age=7200, public
accept-ranges
bytes
cf-ray
7078c9a40ca57562-LHR
vary
Accept-Encoding
content-length
946
expires
Sat, 07 May 2022 11:04:21 GMT
cf-icon-cloud.png
lovely-app.com/cdn-cgi/images/
1 KB
2 KB
Image
General
Full URL
https://lovely-app.com/cdn-cgi/images/cf-icon-cloud.png
Requested by
Host: lovely-app.com
URL: https://lovely-app.com/cdn-cgi/styles/main.css
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700:3108::ac42:28d3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
3a223426c67a0a33ff57af68a57fb589fea36af2a6e8f9dae7798c77471e0e58
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options DENY

Request headers

accept-language
en-GB,en;q=0.9
Referer
https://lovely-app.com/cdn-cgi/styles/main.css
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.41 Safari/537.36

Response headers

date
Sat, 07 May 2022 09:04:21 GMT
x-content-type-options
nosniff
last-modified
Fri, 29 Apr 2022 17:17:13 GMT
server
cloudflare
etag
"626c1d99-5cc"
x-frame-options
DENY
content-type
image/png
cache-control
max-age=7200, public
accept-ranges
bytes
cf-ray
7078c9a40ca77562-LHR
vary
Accept-Encoding
content-length
1484
expires
Sat, 07 May 2022 11:04:21 GMT
cf-icon-server.png
lovely-app.com/cdn-cgi/images/
1 KB
1 KB
Image
General
Full URL
https://lovely-app.com/cdn-cgi/images/cf-icon-server.png
Requested by
Host: lovely-app.com
URL: https://lovely-app.com/cdn-cgi/styles/main.css
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700:3108::ac42:28d3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
41553a537f85839927155af093b7bfa1987215f474ed038714609cc48812ea3b
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options DENY

Request headers

accept-language
en-GB,en;q=0.9
Referer
https://lovely-app.com/cdn-cgi/styles/main.css
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.41 Safari/537.36

Response headers

date
Sat, 07 May 2022 09:04:21 GMT
x-content-type-options
nosniff
last-modified
Fri, 29 Apr 2022 17:17:13 GMT
server
cloudflare
etag
"626c1d99-568"
x-frame-options
DENY
content-type
image/png
cache-control
max-age=7200, public
accept-ranges
bytes
cf-ray
7078c9a40ca97562-LHR
vary
Accept-Encoding
content-length
1384
expires
Sat, 07 May 2022 11:04:21 GMT
cf-icon-error.png
lovely-app.com/cdn-cgi/images/
854 B
913 B
Image
General
Full URL
https://lovely-app.com/cdn-cgi/images/cf-icon-error.png
Requested by
Host: lovely-app.com
URL: https://lovely-app.com/cdn-cgi/styles/main.css
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700:3108::ac42:28d3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
67f70597a183fbca7fac55d609fbaac5c34bb4d4d32a0530bbbbb42591f2de2f
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options DENY

Request headers

accept-language
en-GB,en;q=0.9
Referer
https://lovely-app.com/cdn-cgi/styles/main.css
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.41 Safari/537.36

Response headers

date
Sat, 07 May 2022 09:04:21 GMT
x-content-type-options
nosniff
last-modified
Fri, 29 Apr 2022 17:17:13 GMT
server
cloudflare
etag
"626c1d99-356"
x-frame-options
DENY
content-type
image/png
cache-control
max-age=7200, public
accept-ranges
bytes
cf-ray
7078c9a40caa7562-LHR
vary
Accept-Encoding
content-length
854
expires
Sat, 07 May 2022 11:04:21 GMT

Verdicts & Comments Add Verdict or Comment

4 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| oncontextlost object| oncontextrestored function| structuredClone function| getScreenDetails

2 Cookies

Domain/Path Name / Value
lovely-app.com/ Name: cf_ob_info
Value: 521:7078c9a149977562:LHR
lovely-app.com/ Name: cf_use_ob
Value: 0

2 Console Messages

Source Level URL
Text
network error URL: https://lovely-app.com/
Message:
Failed to load resource: the server responded with a status of 521 ()
network error URL: https://lovely-app.com/
Message:
Failed to load resource: the server responded with a status of 521 ()

Security Headers

This page lists any security headers set by the main page. If you want to understand what these mean and how to use them, head on over to this page

Header Value
X-Frame-Options SAMEORIGIN