URL: https://frankk.uk/
Submission: On December 21 via api from US — Scanned from CA

Summary

This website contacted 5 IPs in 2 countries across 4 domains to perform 18 HTTP transactions. The main IP is 104.21.81.169, located in and belongs to CLOUDFLARENET, US. The main domain is frankk.uk.
TLS certificate: Issued by WE1 on December 21st 2024. Valid for: 3 months.
This is the only time frankk.uk was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
14 104.21.81.169 13335 (CLOUDFLAR...)
1 104.16.79.73 13335 (CLOUDFLAR...)
1 172.253.115.156 15169 (GOOGLE)
1 172.217.165.132 15169 (GOOGLE)
18 5
Apex Domain
Subdomains
Transfer
14 frankk.uk
frankk.uk
558 KB
1 google.com
www.google.com — Cisco Umbrella Rank: 3
1 doubleclick.net
stats.g.doubleclick.net — Cisco Umbrella Rank: 135
550 B
1 cloudflareinsights.com
static.cloudflareinsights.com — Cisco Umbrella Rank: 617
7 KB
18 4
Domain Requested by
14 frankk.uk frankk.uk
static.cloudflareinsights.com
1 www.google.com frankk.uk
1 stats.g.doubleclick.net frankk.uk
1 static.cloudflareinsights.com frankk.uk
18 4

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

Domain
gohugo.io
blowfish.page
Subject Issuer Validity Valid
frankk.uk
WE1
2024-12-21 -
2025-03-21
3 months crt.sh
cloudflareinsights.com
WE1
2024-11-01 -
2025-01-30
3 months crt.sh
*.g.doubleclick.net
WR2
2024-12-02 -
2025-02-24
3 months crt.sh
*.google.com
WR2
2024-12-02 -
2025-02-24
3 months crt.sh

This page contains 1 frames:

Primary Page: https://frankk.uk/
Frame ID: 6AD02E4B933F79C3E422E0430D45824B
Requests: 18 HTTP requests in this frame

Screenshot

Page Title

Frank的廢文

Detected technologies

Overall confidence: 100%
Detected patterns
  • static\.cloudflareinsights\.com/beacon(?:\.min)?\.js

Page Statistics

18
Requests

94 %
HTTPS

0 %
IPv6

4
Domains

4
Subdomains

5
IPs

2
Countries

565 kB
Transfer

702 kB
Size

3
Cookies

Redirected requests

There were HTTP redirect chains for the following requests:

18 HTTP transactions

Resource
Path
Size
x-fer
Type
MIME-Type
Primary Request /
frankk.uk/
33 KB
10 KB
Document
General
Full URL
https://frankk.uk/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.21.81.169 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
b391b5c71551e329368bd64fbabd8f49b685832c8d690dc5154883bc9d5ff24f
Security Headers
Name Value
Strict-Transport-Security max-age=15552000; includeSubDomains
X-Content-Type-Options nosniff

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Response headers

access-control-allow-origin
*
alt-svc
h3=":443"; ma=86400
cache-control
public, max-age=0, must-revalidate
cf-cache-status
DYNAMIC
cf-ray
8f5b784f7e1136d8-YYZ
content-encoding
zstd
content-type
text/html; charset=utf-8
date
Sat, 21 Dec 2024 22:57:14 GMT
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
priority
u=0,i
referrer-policy
strict-origin-when-cross-origin
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=B4L6%2B5JRajek2Bc9k2w7vLYOXlEAm7PIVtE0nuK0n3ldIs1tq%2B9MqmQe2TgdraGGmJg6ZMAVBGNy14wURe3YAoyc5x3p4QdBxmitBYhwK55MDMfCZCldNh3cuR0%3D"}],"group":"cf-nel","max_age":604800}
server
cloudflare
server-timing
cfCacheStatus;desc="DYNAMIC" cfL4;desc="?proto=QUIC&rtt=21715&min_rtt=21290&rtt_var=4046&sent=15&recv=11&lost=2&retrans=0&sent_bytes=4237&recv_bytes=4523&delivery_rate=314&cwnd=8400&unsent_bytes=0&cid=5571051b955618fb&ts=326&x=1" cfExtPri cfHdrFlush;dur=0
strict-transport-security
max-age=15552000; includeSubDomains
vary
Accept-Encoding
x-content-type-options
nosniff
main.bundle.min.33b821b98bed98d82304a33225b044ffc91795a83a2269725220d351a865c121f3a8e19b3a120c5655483cadf9f506616d59001989550c3f4d6d9b2d1f8d4393.css
frankk.uk/css/
84 KB
15 KB
Stylesheet
General
Full URL
https://frankk.uk/css/main.bundle.min.33b821b98bed98d82304a33225b044ffc91795a83a2269725220d351a865c121f3a8e19b3a120c5655483cadf9f506616d59001989550c3f4d6d9b2d1f8d4393.css
Requested by
Host: frankk.uk
URL: https://frankk.uk/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.21.81.169 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
935b8824298383178bca8f1b054f28d1689b959c651d5fdbba24670f969e3a13
Security Headers
Name Value
Strict-Transport-Security max-age=15552000; includeSubDomains
X-Content-Type-Options nosniff

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Referer
https://frankk.uk/

Response headers

content-encoding
zstd
cf-cache-status
MISS
etag
W/"2898d8021f591a67508935c207f223ec"
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=1SgGQJkKPW0pvIUzbtSuhpyL3EwqXdCB468a1xcKNFsNPBqqrqVAaHj3ZwtFgxPxDYT1%2BqQhW6f7LxLJigV30jknhqsOYGl6mef8ac1XmWA9Wgbo3wCFd%2BTrOdo%3D"}],"group":"cf-nel","max_age":604800}
x-content-type-options
nosniff
alt-svc
h3=":443"; ma=86400
server-timing
cfL4;desc="?proto=QUIC&rtt=23918&min_rtt=21290&rtt_var=5315&sent=27&recv=19&lost=3&retrans=1&sent_bytes=15646&recv_bytes=5518&delivery_rate=9348&cwnd=8400&unsent_bytes=0&cid=5571051b955618fb&ts=539&x=1", cfExtPri, cfHdrFlush;dur=0
date
Sat, 21 Dec 2024 22:57:14 GMT
content-type
text/css; charset=utf-8
vary
Accept-Encoding
priority
u=0,i=?0
strict-transport-security
max-age=15552000; includeSubDomains
cache-control
public, max-age=3600, must-revalidate
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
referrer-policy
strict-origin-when-cross-origin
cf-ray
8f5b7851dfee36d8-YYZ
access-control-allow-origin
*
server
cloudflare
back.webp
frankk.uk/img/
345 KB
342 KB
Image
General
Full URL
https://frankk.uk/img/back.webp
Requested by
Host: frankk.uk
URL: https://frankk.uk/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.21.81.169 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
8991e580a58066cd5ab5605d893711940f7612746800cca588815d8b03f0eb51
Security Headers
Name Value
Strict-Transport-Security max-age=15552000; includeSubDomains
X-Content-Type-Options nosniff

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Referer
https://frankk.uk/

Response headers

content-encoding
zstd
cf-cache-status
MISS
etag
W/"981db1d722546cb970f00f70de2d3cea"
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=ZijfTKuFJqateGKuQ8rhup7eJGwcRMXT1AJnuq84o5cGZ8QJY0uTaqfPz3N%2F%2FDCaVZBHZUoAvAdOFat%2BQq7e6MF6%2FpKing1bX8TWwbEJpM5gvM2gim8QjCJ%2BIoQ%3D"}],"group":"cf-nel","max_age":604800}
x-content-type-options
nosniff
alt-svc
h3=":443"; ma=86400
server-timing
cfL4;desc="?proto=QUIC&rtt=22706&min_rtt=20888&rtt_var=3245&sent=42&recv=23&lost=3&retrans=1&sent_bytes=31417&recv_bytes=5690&delivery_rate=60749&cwnd=9600&unsent_bytes=0&cid=5571051b955618fb&ts=567&x=1", cfExtPri, cfHdrFlush;dur=0
date
Sat, 21 Dec 2024 22:57:14 GMT
content-type
image/webp
vary
Accept-Encoding
priority
u=2,i
strict-transport-security
max-age=15552000; includeSubDomains
cache-control
public, max-age=3600, must-revalidate
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
referrer-policy
strict-origin-when-cross-origin
cf-ray
8f5b7851dff036d8-YYZ
access-control-allow-origin
*
server
cloudflare
rocket-loader.min.js
frankk.uk/cdn-cgi/scripts/7d0fa10a/cloudflare-static/
12 KB
4 KB
Script
General
Full URL
https://frankk.uk/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js
Requested by
Host: frankk.uk
URL: https://frankk.uk/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.21.81.169 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
ccf00d1923b0131a10e0c6d26f95e5dee6ebf8621a27e83c5a2f68a2e0093142
Security Headers
Name Value
Strict-Transport-Security max-age=15552000; includeSubDomains
X-Content-Type-Options nosniff
X-Frame-Options DENY

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Referer
https://frankk.uk/

Response headers

strict-transport-security
max-age=15552000; includeSubDomains
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
cache-control
max-age=172800, public
content-encoding
gzip
etag
W/"675fc4cd-302c"
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=7PXJbfewVUtRsdYDBSif1L6xCoRMfVZkhG9wueGWOfISd0Be1VpwBgh7zvFCDgBmVXiDomlDDjkF9j%2BFqBq8emlF5jeps6Ny3ku3QDGP4GD8cG2YgaWyZkSgvaM%3D"}],"group":"cf-nel","max_age":604800}
x-content-type-options
nosniff
cf-ray
8f5b7852a88b36d8-YYZ
expires
Mon, 23 Dec 2024 22:57:14 GMT
date
Sat, 21 Dec 2024 22:57:14 GMT
content-type
application/javascript
last-modified
Mon, 16 Dec 2024 06:12:29 GMT
vary
Accept-Encoding
server
cloudflare
x-frame-options
DENY
vcd15cbe7772f49c399c6a5babf22c1241717689176015
static.cloudflareinsights.com/beacon.min.js/
19 KB
7 KB
Script
General
Full URL
https://static.cloudflareinsights.com/beacon.min.js/vcd15cbe7772f49c399c6a5babf22c1241717689176015
Requested by
Host: frankk.uk
URL: https://frankk.uk/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
104.16.79.73 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
8a18d13015336bc184819a5a768447462202ef3105ec511bf42ed8304a7ed94f

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Origin
https://frankk.uk
Referer
https://frankk.uk/

Response headers

cache-control
public, max-age=86400
content-encoding
gzip
etag
W/"2024.6.1"
cross-origin-resource-policy
cross-origin
cf-ray
8f5b78531d9a3704-YYZ
access-control-allow-origin
*
date
Sat, 21 Dec 2024 22:57:14 GMT
content-type
text/javascript;charset=UTF-8
last-modified
Thu, 06 Jun 2024 15:52:56 GMT
vary
Accept-Encoding
server
cloudflare
featured_hu3939327f03bc559a3a58edf87d91742c_992278_600x0_resize_q75_h2_box_2.webp
frankk.uk/posts/tech/nhnc-2024/
52 KB
53 KB
Image
General
Full URL
https://frankk.uk/posts/tech/nhnc-2024/featured_hu3939327f03bc559a3a58edf87d91742c_992278_600x0_resize_q75_h2_box_2.webp
Requested by
Host: frankk.uk
URL: https://frankk.uk/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.21.81.169 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
62e3a738a11237886c1fc8311cfd1fec71715ab3d78e9684dc4b75eab2508095
Security Headers
Name Value
Strict-Transport-Security max-age=15552000; includeSubDomains
X-Content-Type-Options nosniff

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Referer
https://frankk.uk/

Response headers

content-encoding
zstd
cf-cache-status
MISS
etag
W/"a3371980afbf3086df2c80c0807330aa"
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=3gi7kvewgW1nWORQcU%2FLz2cwpcmBS%2BEaYFB4LBVHFzNEOAlLURy2Kz7aTaKl030dUVYeEYsa0dSbOiljqeMaEqL6jVHzigmSOaIgS148BVZLGyiXkjTvktuLRzA%3D"}],"group":"cf-nel","max_age":604800}
x-content-type-options
nosniff
alt-svc
h3=":443"; ma=86400
server-timing
cfL4;desc="?proto=QUIC&rtt=36031&min_rtt=20717&rtt_var=10973&sent=90&recv=52&lost=7&retrans=5&sent_bytes=76027&recv_bytes=8328&delivery_rate=231994&cwnd=7559&unsent_bytes=0&cid=5571051b955618fb&ts=688&x=1", cfExtPri, cfHdrFlush;dur=5
date
Sat, 21 Dec 2024 22:57:14 GMT
content-type
image/webp
vary
Accept-Encoding
priority
u=3,i
strict-transport-security
max-age=15552000; includeSubDomains
cache-control
public, max-age=3600, must-revalidate
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
referrer-policy
strict-origin-when-cross-origin
cf-ray
8f5b7852c89b36d8-YYZ
access-control-allow-origin
*
server
cloudflare
featured_hub2ab5a73e81596b413b1b08949c09d67_277312_600x0_resize_q75_h2_box_2.webp
frankk.uk/posts/tech/protect-how/
70 KB
71 KB
Image
General
Full URL
https://frankk.uk/posts/tech/protect-how/featured_hub2ab5a73e81596b413b1b08949c09d67_277312_600x0_resize_q75_h2_box_2.webp
Requested by
Host: frankk.uk
URL: https://frankk.uk/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.21.81.169 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
29bd2dc3642d38c598c0723576c2d5db893ad47eea8e5370eeea400756b0d694
Security Headers
Name Value
Strict-Transport-Security max-age=15552000; includeSubDomains
X-Content-Type-Options nosniff

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Referer
https://frankk.uk/

Response headers

content-encoding
zstd
cf-cache-status
MISS
etag
W/"523b0e7263c49a1356e431eac46fac2e"
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=4lF5RxmsTtf8vsepiJFZRgb1F0uj29q0HPWFwjo3AjFEzJOrwWSST4ZyY73HdrZd1jDpd%2BIiDxQK25RhSYI8VfT7I9zsjMrh92gD9TMXIbb4O4ej3myborsVo3A%3D"}],"group":"cf-nel","max_age":604800}, {"endpoints":[{"url":"https:\/\/csp-reporting.cloudflare.com\/cdn-cgi\/script_monitor\/report?m=4n_o.xMtpQHHwYgXG4lrIWBSaf99K2s2e2mBcoTSwVs-1734821834-1.0.1.1-0qZpTM.EUTidd40e5rk0zlM8oRdjkiJvbiPBMHREy_iO5huvHrYLCM5nrMHPhLr9Q88eWPbM0yquClaVzp7ckKv9sfSMTC9kv49tD6ydxZRuB4m3V_VP8QGUVlXUCaxjpTYD0jyNtv9gp6fCd.OEZg"}],"group":"cf-csp-endpoint","max_age":86400}
x-content-type-options
nosniff
alt-svc
h3=":443"; ma=86400
server-timing
cfL4;desc="?proto=QUIC&rtt=30168&min_rtt=20717&rtt_var=11107&sent=98&recv=56&lost=7&retrans=5&sent_bytes=84722&recv_bytes=8520&delivery_rate=170593&cwnd=8759&unsent_bytes=0&cid=5571051b955618fb&ts=694&x=1", cfExtPri, cfHdrFlush;dur=21
date
Sat, 21 Dec 2024 22:57:14 GMT
content-type
image/webp
vary
Accept-Encoding
priority
u=3,i
strict-transport-security
max-age=15552000; includeSubDomains
cache-control
public, max-age=3600, must-revalidate
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
referrer-policy
strict-origin-when-cross-origin
content-security-policy-report-only
script-src 'none'; report-uri https://csp-reporting.cloudflare.com/cdn-cgi/script_monitor/report?m=4n_o.xMtpQHHwYgXG4lrIWBSaf99K2s2e2mBcoTSwVs-1734821834-1.0.1.1-0qZpTM.EUTidd40e5rk0zlM8oRdjkiJvbiPBMHREy_iO5huvHrYLCM5nrMHPhLr9Q88eWPbM0yquClaVzp7ckKv9sfSMTC9kv49tD6ydxZRuB4m3V_VP8QGUVlXUCaxjpTYD0jyNtv9gp6fCd.OEZg; report-to cf-csp-endpoint
cf-ray
8f5b7852c89d36d8-YYZ
access-control-allow-origin
*
server
cloudflare
featured_hu86b32a598c1d7017c60df3fe021889a8_61546_600x0_resize_q75_h2_box_2.webp
frankk.uk/posts/others/school-sec/
35 KB
36 KB
Image
General
Full URL
https://frankk.uk/posts/others/school-sec/featured_hu86b32a598c1d7017c60df3fe021889a8_61546_600x0_resize_q75_h2_box_2.webp
Requested by
Host: frankk.uk
URL: https://frankk.uk/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.21.81.169 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
f00dbd3321d1be89e8bb0a63b38b21ca574e4418c682e121f6d31a5d91fb851d
Security Headers
Name Value
Strict-Transport-Security max-age=15552000; includeSubDomains
X-Content-Type-Options nosniff

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Referer
https://frankk.uk/

Response headers

content-encoding
zstd
cf-cache-status
MISS
etag
W/"b411a5a3d4291a4eff89c6e7f2fb80c2"
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=%2F5hSXCtxdbNmANAr3X2cQ48Qn4pJbBwkIMTKIaE4WRhYXq1ZXxNqvZTeJellHTkW6Ju%2F5Wn18DxvnAn3ENQMvGLUMFVzr5cx3vMTMCLqJZ3mJHpxfzx7AV2g%2Bro%3D"}],"group":"cf-nel","max_age":604800}
x-content-type-options
nosniff
alt-svc
h3=":443"; ma=86400
server-timing
cfL4;desc="?proto=QUIC&rtt=41669&min_rtt=20717&rtt_var=18672&sent=107&recv=61&lost=8&retrans=6&sent_bytes=94289&recv_bytes=8750&delivery_rate=287445&cwnd=6131&unsent_bytes=0&cid=5571051b955618fb&ts=744&x=1", cfExtPri, cfHdrFlush;dur=13
date
Sat, 21 Dec 2024 22:57:14 GMT
content-type
image/webp
vary
Accept-Encoding
priority
u=3,i
strict-transport-security
max-age=15552000; includeSubDomains
cache-control
public, max-age=3600, must-revalidate
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
referrer-policy
strict-origin-when-cross-origin
cf-ray
8f5b7852c89e36d8-YYZ
access-control-allow-origin
*
server
cloudflare
s.js
frankk.uk/cdn-cgi/zaraz/
7 KB
5 KB
Script
General
Full URL
https://frankk.uk/cdn-cgi/zaraz/s.js?z=JTdCJTIyZXhlY3V0ZWQlMjIlM0ElNUIlNUQlMkMlMjJ0JTIyJTNBJTIyRnJhbmslRTclOUElODQlRTUlQkIlQTIlRTYlOTYlODclMjIlMkMlMjJ4JTIyJTNBMC44Mjg4MTczMTAxMzIxNzUyJTJDJTIydyUyMiUzQTE2MDAlMkMlMjJoJTIyJTNBMTIwMCUyQyUyMmolMjIlM0ExMjAwJTJDJTIyZSUyMiUzQTE2MDAlMkMlMjJsJTIyJTNBJTIyaHR0cHMlM0ElMkYlMkZmcmFua2sudWslMkYlMjIlMkMlMjJyJTIyJTNBJTIyJTIyJTJDJTIyayUyMiUzQTI0JTJDJTIybiUyMiUzQSUyMlVURi04JTIyJTJDJTIybyUyMiUzQTQ4MCUyQyUyMnElMjIlM0ElNUIlNUQlN0Q=
Requested by
Host: frankk.uk
URL: https://frankk.uk/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.21.81.169 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
25497448a5b84db4b81463346882dd2a46769b61584a0591532f614165444934
Security Headers
Name Value
Strict-Transport-Security max-age=15552000; includeSubDomains
X-Content-Type-Options nosniff

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Referer
https://frankk.uk/

Response headers

x-robots-tag
none
access-control-max-age
600
content-encoding
zstd
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=HfbNP1mwOp17AfHpLwT20f1hi8PoaH5VgFDMoEkG0J6Ofo%2BVic6%2Fy6rq%2FbUfSCal7kH%2FSnjkYOkO27TJEr8XU2ic96q3%2B%2Ffzn4fkD%2FVX43t3TqbbnOJRoTzsVSc%3D"}],"group":"cf-nel","max_age":604800}
access-control-allow-methods
GET, HEAD, POST, OPTIONS
x-content-type-options
nosniff
alt-svc
h3=":443"; ma=86400
server-timing
cfL4;desc="?proto=QUIC&rtt=205874&min_rtt=19640&rtt_var=91042&sent=485&recv=255&lost=75&retrans=83&sent_bytes=493566&recv_bytes=18724&delivery_rate=94759&cwnd=3306&unsent_bytes=0&cid=5571051b955618fb&ts=10648&x=1", cfExtPri, cfHdrFlush;dur=0
date
Sat, 21 Dec 2024 22:57:24 GMT
content-type
text/javascript; charset=utf-8
vary
Origin, Accept-Encoding
priority
u=3,i=?0
access-control-allow-headers
Content-Type, Set-Cookie, Cache-Control
strict-transport-security
max-age=15552000; includeSubDomains
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
access-control-allow-credentials
true
cf-ray
8f5b78917f6336d8-YYZ
access-control-allow-origin
https://frankk.uk
server
cloudflare
collect
stats.g.doubleclick.net/g/
0
550 B
XHR
General
Full URL
https://stats.g.doubleclick.net/g/collect?t=dc&aip=1&_r=3&v=1&_v=j86&tid=G-N8J9P68KSF&cid=023bf1a5-b162-4793-beb6-8bb8176aced0&_u=KGDAAEADQAAAAC%7E&z=360157464
Requested by
Host: frankk.uk
URL: https://frankk.uk/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
172.253.115.156 , United States, ASN15169 (GOOGLE, US),
Reverse DNS
bg-in-f156.1e100.net
Software
Golfe2 /
Resource Hash
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Referer
https://frankk.uk/

Response headers

cache-control
no-cache, no-store, must-revalidate
pragma
no-cache
cross-origin-resource-policy
cross-origin
access-control-allow-credentials
true
content-security-policy-report-only
script-src 'none'; form-action 'none'; frame-src 'none'; report-uri https://csp.withgoogle.com/csp/scaffolding/ascnsrsggc:111:0
report-to
{"group":"coop_reporting","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/scaffolding/ascnsrsggc:111:0"}],}
expires
Fri, 01 Jan 1990 00:00:00 GMT
access-control-allow-origin
https://frankk.uk
cross-origin-opener-policy-report-only
same-origin; report-to=coop_reporting
content-length
0
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
date
Sat, 21 Dec 2024 22:57:24 GMT
content-type
text/plain
server
Golfe2
ga-audiences
www.google.com/ads/
42 B
0
Fetch
General
Full URL
https://www.google.com/ads/ga-audiences?t=sr&aip=1&_r=4&v=1&_v=j86&tid=G-N8J9P68KSF&cid=023bf1a5-b162-4793-beb6-8bb8176aced0&_u=KGDAAEADQAAAAC%7E&z=360157464&slf_rd=1
Requested by
Host: frankk.uk
URL: https://frankk.uk/cdn-cgi/zaraz/s.js?z=JTdCJTIyZXhlY3V0ZWQlMjIlM0ElNUIlNUQlMkMlMjJ0JTIyJTNBJTIyRnJhbmslRTclOUElODQlRTUlQkIlQTIlRTYlOTYlODclMjIlMkMlMjJ4JTIyJTNBMC44Mjg4MTczMTAxMzIxNzUyJTJDJTIydyUyMiUzQTE2MDAlMkMlMjJoJTIyJTNBMTIwMCUyQyUyMmolMjIlM0ExMjAwJTJDJTIyZSUyMiUzQTE2MDAlMkMlMjJsJTIyJTNBJTIyaHR0cHMlM0ElMkYlMkZmcmFua2sudWslMkYlMjIlMkMlMjJyJTIyJTNBJTIyJTIyJTJDJTIyayUyMiUzQTI0JTJDJTIybiUyMiUzQSUyMlVURi04JTIyJTJDJTIybyUyMiUzQTQ4MCUyQyUyMnElMjIlM0ElNUIlNUQlN0Q=
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
172.217.165.132 , United States, ASN15169 (GOOGLE, US),
Reverse DNS
lga25s70-in-f4.1e100.net
Software
cafe /
Resource Hash
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Referer
https://frankk.uk/

Response headers

cache-control
no-cache, no-store, must-revalidate
timing-allow-origin
*
pragma
no-cache
cross-origin-resource-policy
cross-origin
access-control-allow-credentials
true
x-content-type-options
nosniff
expires
Fri, 01 Jan 1990 00:00:00 GMT
access-control-allow-origin
https://frankk.uk
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
p3p
policyref="https://www.googleadservices.com/pagead/p3p.xml", CP="NOI DEV PSA PSD IVA IVD OTP OUR OTR IND OTC"
content-length
42
date
Sat, 21 Dec 2024 22:57:25 GMT
x-xss-protection
0
content-type
image/gif
server
cafe
appearance.min.516a16745bea5a9bd011138d254cc0fd3973cd55ce6e15f3dec763e7c7c2c7448f8fe7b54cca811cb821b0c7e12cd161caace1dd794ac3d34d40937cbcc9ee12.js
frankk.uk/js/
2 KB
1 KB
Script
General
Full URL
https://frankk.uk/js/appearance.min.516a16745bea5a9bd011138d254cc0fd3973cd55ce6e15f3dec763e7c7c2c7448f8fe7b54cca811cb821b0c7e12cd161caace1dd794ac3d34d40937cbcc9ee12.js
Requested by
Host: frankk.uk
URL: https://frankk.uk/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.21.81.169 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
22ba70b6aa97ffda4f4558bcb876b02b773c8a0bc9ed16ab70b52cced66286d3
Security Headers
Name Value
Strict-Transport-Security max-age=15552000; includeSubDomains
X-Content-Type-Options nosniff

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Referer
https://frankk.uk/

Response headers

content-encoding
zstd
cf-cache-status
MISS
etag
W/"8faf19ab9251d019a8eb4344fc5a7258"
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=MtrsSQZ0gDvlS0UcRQbNzo1SeB2rdftRyC8bJ7VgoknZo1iTsZmas2vpCfZp4kZwCLXQVrHOUOt%2Fn6fTN%2BhZquTkGgmx5hXO8%2F5%2BGqt146YeWRSxOQW0KifD7rM%3D"}],"group":"cf-nel","max_age":604800}
x-content-type-options
nosniff
alt-svc
h3=":443"; ma=86400
server-timing
cfL4;desc="?proto=QUIC&rtt=548767&min_rtt=19640&rtt_var=100368&sent=746&recv=394&lost=137&retrans=153&sent_bytes=725297&recv_bytes=27517&delivery_rate=91662&cwnd=2876&unsent_bytes=0&cid=5571051b955618fb&ts=16966&x=1", cfExtPri, cfHdrFlush;dur=19
date
Sat, 21 Dec 2024 22:57:31 GMT
content-type
application/javascript
vary
Accept-Encoding
priority
u=3,i=?0
strict-transport-security
max-age=15552000; includeSubDomains
cache-control
public, max-age=3600, must-revalidate
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
referrer-policy
strict-origin-when-cross-origin
cf-ray
8f5b78b86dad36d8-YYZ
access-control-allow-origin
*
server
cloudflare
favicon-32x32.png
frankk.uk/
3 KB
4 KB
Other
General
Full URL
https://frankk.uk/favicon-32x32.png
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.21.81.169 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
9a4f7dd93cf623454bf7ddd291b74b15a48a7fc21ced92d37f508478a05a9974
Security Headers
Name Value
Strict-Transport-Security max-age=15552000; includeSubDomains
X-Content-Type-Options nosniff

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Referer
https://frankk.uk/

Response headers

content-encoding
zstd
cf-cache-status
MISS
etag
W/"c2f5453a3016ec45f01ee491b78191a8"
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=n7VymEspLUfo%2FS%2FC1u%2FcKlnUFMKzTDwXduOG6XZ27XcJqXSLda9kHGONlQ6Tzdx4KNzh6ajMoT1RSF9LXE4EVYGMP0LnW2Q7rsW5bEWjPKWZDpPlQV71ylluzfk%3D"}],"group":"cf-nel","max_age":604800}
x-content-type-options
nosniff
alt-svc
h3=":443"; ma=86400
server-timing
cfL4;desc="?proto=QUIC&rtt=548767&min_rtt=19640&rtt_var=100368&sent=743&recv=394&lost=137&retrans=153&sent_bytes=722421&recv_bytes=27517&delivery_rate=91662&cwnd=2876&unsent_bytes=0&cid=5571051b955618fb&ts=16957&x=1", cfExtPri, cfHdrFlush;dur=0
date
Sat, 21 Dec 2024 22:57:31 GMT
content-type
image/png
vary
Accept-Encoding
priority
u=1,i
strict-transport-security
max-age=15552000; includeSubDomains
cache-control
public, max-age=3600, must-revalidate
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
referrer-policy
strict-origin-when-cross-origin
cf-ray
8f5b78b86daf36d8-YYZ
access-control-allow-origin
*
server
cloudflare
zoom.min.37d2094687372da3f7343a221a470f6b8806f7891aa46a5a03966af7f0ebd38b9fe536cb154e6ad28f006d184b294525a7c4054b6bbb4be62d8b453b42db99bd.js
frankk.uk/lib/zoom/
9 KB
4 KB
Script
General
Full URL
https://frankk.uk/lib/zoom/zoom.min.37d2094687372da3f7343a221a470f6b8806f7891aa46a5a03966af7f0ebd38b9fe536cb154e6ad28f006d184b294525a7c4054b6bbb4be62d8b453b42db99bd.js
Requested by
Host: frankk.uk
URL: https://frankk.uk/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.21.81.169 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
11d3e061c3e4fc822bc3b1587ae2507b1bdae3da55459366b772dcba512bef33
Security Headers
Name Value
Strict-Transport-Security max-age=15552000; includeSubDomains
X-Content-Type-Options nosniff

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Referer
https://frankk.uk/

Response headers

content-encoding
zstd
cf-cache-status
MISS
etag
W/"a1e2d9b6c8e74d01d34be02b15bde794"
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=RTJvC6zoaLjBFwCRxViXNR54TA7KUhmJIeyMolEOQwphpws1o%2BKTfzUfM3F4moHhFJGyA2ZFAiUa6LEDjk3YBygHRkgdR%2FNSNeCMCeIKyjHXlMFrg3MxpQIV6ko%3D"}],"group":"cf-nel","max_age":604800}
x-content-type-options
nosniff
alt-svc
h3=":443"; ma=86400
server-timing
cfL4;desc="?proto=QUIC&rtt=1100978&min_rtt=19640&rtt_var=830432&sent=753&recv=400&lost=139&retrans=156&sent_bytes=729126&recv_bytes=28840&delivery_rate=112&cwnd=2876&unsent_bytes=0&cid=5571051b955618fb&ts=18633&x=1", cfExtPri, cfHdrFlush;dur=0
date
Sat, 21 Dec 2024 22:57:32 GMT
content-type
application/javascript
vary
Accept-Encoding
priority
u=3,i=?0
strict-transport-security
max-age=15552000; includeSubDomains
cache-control
public, max-age=3600, must-revalidate
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
referrer-policy
strict-origin-when-cross-origin
cf-ray
8f5b78c2bf2a36d8-YYZ
access-control-allow-origin
*
server
cloudflare
jquery.slim.min.b0dca576e87d7eaa5850ae4e61759c065786cdb6489d68fcc82240539eebd5da522bdb4fda085ffd245808c8fe2acb2516408eb774ef26b5f6015fc6737c0ea8.js
frankk.uk/lib/jquery/
0
0

process.min.62060bb247f4de2b6dde45903668fefb68d792f365587605177b1227c0cf43588701edaca0cb40e2c8e2789bd5ce67c1d2a215b9fb258c3496a7cd25e7cb5fdf.js
frankk.uk/js/
1003 B
1 KB
Script
General
Full URL
https://frankk.uk/js/process.min.62060bb247f4de2b6dde45903668fefb68d792f365587605177b1227c0cf43588701edaca0cb40e2c8e2789bd5ce67c1d2a215b9fb258c3496a7cd25e7cb5fdf.js
Requested by
Host: frankk.uk
URL: https://frankk.uk/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.21.81.169 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
23dfa0e1c95d62850409ba2c9edb8d54e80c3b9bd6fe70cb4327b0368f939968
Security Headers
Name Value
Strict-Transport-Security max-age=15552000; includeSubDomains
X-Content-Type-Options nosniff

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Referer
https://frankk.uk/

Response headers

content-encoding
zstd
cf-cache-status
MISS
etag
W/"7510f2a446abd91dfc2c5b08237cb2c5"
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=hPVn3jbqcy%2FVHQ%2B6s95Dp27pkW5NobSTFir%2BbMinEsOVzzw2%2B%2BPOU%2Fpf2ADiTxR%2Fx0teBUwClA5IPV4rjYp74U6tL18WCDtq2nYtRzyWC6xyIOvpdRJGNCRb008%3D"}],"group":"cf-nel","max_age":604800}
x-content-type-options
nosniff
alt-svc
h3=":443"; ma=86400
server-timing
cfL4;desc="?proto=QUIC&rtt=2871803&min_rtt=19640&rtt_var=694128&sent=793&recv=423&lost=144&retrans=160&sent_bytes=764072&recv_bytes=32020&delivery_rate=7&cwnd=2876&unsent_bytes=0&cid=5571051b955618fb&ts=20637&x=1", cfExtPri, cfHdrFlush;dur=0
date
Sat, 21 Dec 2024 22:57:34 GMT
content-type
application/javascript
vary
Accept-Encoding
priority
u=3,i=?0
strict-transport-security
max-age=15552000; includeSubDomains
cache-control
public, max-age=3600, must-revalidate
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
referrer-policy
strict-origin-when-cross-origin
cf-ray
8f5b78cf6a6e36d8-YYZ
access-control-allow-origin
*
server
cloudflare
main.bundle.min.94d0703187505a63e4732b378b66ee35d8f23d2f4da465aea9f61aa9afa22ede9cfc3c241d5d4fc754dbd834422320060f0870e56d77b6c7cc4a369962a5e2dd.js
frankk.uk/js/
29 KB
10 KB
Script
General
Full URL
https://frankk.uk/js/main.bundle.min.94d0703187505a63e4732b378b66ee35d8f23d2f4da465aea9f61aa9afa22ede9cfc3c241d5d4fc754dbd834422320060f0870e56d77b6c7cc4a369962a5e2dd.js
Requested by
Host: frankk.uk
URL: https://frankk.uk/cdn-cgi/scripts/7d0fa10a/cloudflare-static/rocket-loader.min.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.21.81.169 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
3577dcd8d71fc0e3ffeeee464b3604fb14981ac02eac61faa9719a97178c65b4
Security Headers
Name Value
Strict-Transport-Security max-age=15552000; includeSubDomains
X-Content-Type-Options nosniff

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Referer
https://frankk.uk/

Response headers

content-encoding
zstd
cf-cache-status
MISS
etag
W/"f4e54e4068fd9089cb285158d13be681"
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=iDTM0gwUpvauzN4XdcsLo0HrM%2FbBiEYalLDUBEGN21vI2VV58ho2l8raSFuoeW1X30mDQcKbYU%2BvepiY07mr6B5NmezdVyapExS09MGja93mxnmVBjNz2lA8g10%3D"}],"group":"cf-nel","max_age":604800}
x-content-type-options
nosniff
alt-svc
h3=":443"; ma=86400
server-timing
cfL4;desc="?proto=QUIC&rtt=3239708&min_rtt=19640&rtt_var=1028153&sent=796&recv=426&lost=145&retrans=160&sent_bytes=765369&recv_bytes=33206&delivery_rate=12920&cwnd=2876&unsent_bytes=0&cid=5571051b955618fb&ts=20759&x=1", cfExtPri, cfHdrFlush;dur=0
date
Sat, 21 Dec 2024 22:57:34 GMT
content-type
application/javascript
vary
Accept-Encoding
priority
u=3,i=?0
strict-transport-security
max-age=15552000; includeSubDomains
cache-control
public, max-age=3600, must-revalidate
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
referrer-policy
strict-origin-when-cross-origin
cf-ray
8f5b78d03b0e36d8-YYZ
access-control-allow-origin
*
server
cloudflare
rum
frankk.uk/cdn-cgi/
0
138 B
XHR
General
Full URL
https://frankk.uk/cdn-cgi/rum?
Requested by
Host: static.cloudflareinsights.com
URL: https://static.cloudflareinsights.com/beacon.min.js/vcd15cbe7772f49c399c6a5babf22c1241717689176015
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.21.81.169 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Frame-Options DENY

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
content-type
application/json
Referer
https://frankk.uk/

Response headers

access-control-max-age
86400
access-control-allow-credentials
true
access-control-allow-methods
POST,OPTIONS
x-content-type-options
nosniff
cf-ray
8f5b78d37e4336d8-YYZ
access-control-allow-origin
https://frankk.uk
date
Sat, 21 Dec 2024 22:57:35 GMT
vary
Origin
server
cloudflare
x-frame-options
DENY

Failed requests

These URLs were requested, but there was no response received. You will also see them in the list above.

Domain
frankk.uk
URL
https://frankk.uk/lib/jquery/jquery.slim.min.b0dca576e87d7eaa5850ae4e61759c065786cdb6489d68fcc82240539eebd5da522bdb4fda085ffd245808c8fe2acb2516408eb774ef26b5f6015fc6737c0ea8.js

Verdicts & Comments Add Verdict or Comment

9 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| zarazData object| zaraz object| __cfQR object| __cfBeacon object| dataLayer object| x function| updateMeta function| getTargetAppearance function| mediumZoom

3 Cookies

Domain/Path Name / Value
.frankk.uk/ Name: cfzs_google-analytics_v4
Value: %7B%22LApr_pageviewCounter%22%3A%7B%22v%22%3A%221%22%7D%7D
.frankk.uk/ Name: cfz_zaraz-analytics
Value: %7B%22_cfa_clientId%22%3A%7B%22v%22%3A%2260629364826069310%22%2C%22e%22%3A1766357844724%7D%2C%22_cfa_sId%22%3A%7B%22v%22%3A%2286109765979318700%22%2C%22e%22%3A1734823644724%7D%7D
.frankk.uk/ Name: cfz_google-analytics_v4
Value: %7B%22LApr_engagementDuration%22%3A%7B%22v%22%3A%220%22%2C%22e%22%3A1766357844724%7D%2C%22LApr_engagementStart%22%3A%7B%22v%22%3A%221734821844724%22%2C%22e%22%3A1766357844724%7D%2C%22LApr_counter%22%3A%7B%22v%22%3A%221%22%2C%22e%22%3A1766357844724%7D%2C%22LApr_ga4sid%22%3A%7B%22v%22%3A%222002820776%22%2C%22e%22%3A1734823644724%7D%2C%22LApr_session_counter%22%3A%7B%22v%22%3A%221%22%2C%22e%22%3A1766357844724%7D%2C%22LApr_ga4%22%3A%7B%22v%22%3A%22023bf1a5-b162-4793-beb6-8bb8176aced0%22%2C%22e%22%3A1766357844724%7D%2C%22LApr__z_ga_audiences%22%3A%7B%22v%22%3A%22023bf1a5-b162-4793-beb6-8bb8176aced0%22%2C%22e%22%3A1766357844724%7D%2C%22LApr_let%22%3A%7B%22v%22%3A%221734821844724%22%2C%22e%22%3A1766357844724%7D%7D

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
Strict-Transport-Security max-age=15552000; includeSubDomains
X-Content-Type-Options nosniff