URL: https://delsurmath.org/
Submission: On September 21 via api from BE — Scanned from CA

Summary

This website contacted 7 IPs in 1 countries across 5 domains to perform 13 HTTP transactions. The main IP is 207.174.61.1, located in United States and belongs to AMAZON-02, US. The main domain is delsurmath.org.
TLS certificate: Issued by R11 on September 5th 2024. Valid for: 3 months.
This is the only time delsurmath.org was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
2 207.174.61.1 16509 (AMAZON-02)
5 2600:9000:251... 16509 (AMAZON-02)
2 2600:9000:261... 16509 (AMAZON-02)
1 2607:f8b0:400... 15169 (GOOGLE)
1 142.250.65.227 15169 (GOOGLE)
1 18.164.96.117 16509 (AMAZON-02)
13 7
Apex Domain
Subdomains
Transfer
6 short.io
js.short.io
201 KB
2 shortiougc.com
shortiougc.com
142 KB
2 delsurmath.org
delsurmath.org
10 KB
1 gstatic.com
fonts.gstatic.com
47 KB
1 googleapis.com
fonts.googleapis.com — Cisco Umbrella Rank: 32
3 KB
13 5
Domain Requested by
6 js.short.io delsurmath.org
js.short.io
2 shortiougc.com delsurmath.org
2 delsurmath.org
1 fonts.gstatic.com fonts.googleapis.com
1 fonts.googleapis.com js.short.io
13 5

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

Domain
short.io
Subject Issuer Validity Valid
delsurmath.org
R11
2024-09-05 -
2024-12-04
3 months crt.sh
*.short.io
Amazon RSA 2048 M02
2024-08-23 -
2025-09-21
a year crt.sh
shortiougc.com
Amazon RSA 2048 M02
2024-03-24 -
2025-04-22
a year crt.sh
upload.video.google.com
WR2
2024-08-26 -
2024-11-18
3 months crt.sh
*.gstatic.com
WR2
2024-08-26 -
2024-11-18
3 months crt.sh

This page contains 1 frames:

Primary Page: https://delsurmath.org/
Frame ID: F197C3CDB5CDD431F35F87712F8B7563
Requests: 13 HTTP requests in this frame

Screenshot

Page Title

Del Sur Math Club

Page Statistics

13
Requests

92 %
HTTPS

50 %
IPv6

5
Domains

5
Subdomains

7
IPs

1
Countries

403 kB
Transfer

928 kB
Size

0
Cookies

Redirected requests

There were HTTP redirect chains for the following requests:

13 HTTP transactions

Resource
Path
Size
x-fer
Type
MIME-Type
Primary Request /
delsurmath.org/
5 KB
5 KB
Document
General
Full URL
https://delsurmath.org/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
207.174.61.1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
/ Short.io/Edge
Resource Hash
6dc8f61d9906c1575e9de21633aaf060aac21acd494cad14f3d3eb7f2db90ad2
Security Headers
Name Value
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/129.0.0.0 Safari/537.36

Response headers

content-type
text/html; charset=utf-8
date
Sat, 21 Sep 2024 07:21:57 GMT
x-content-type-options
nosniff
x-powered-by
Short.io/Edge
style.css
js.short.io/redirector/main-page-templates/assets/css/
11 KB
3 KB
Stylesheet
General
Full URL
https://js.short.io/redirector/main-page-templates/assets/css/style.css
Requested by
Host: delsurmath.org
URL: https://delsurmath.org/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:2510:6000:1d:20ec:b440:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
AmazonS3 /
Resource Hash
32500f07fbd314117ed52b7f63d0c8c49a63675e47cbd443adb12fb650ecf68d

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Referer
https://delsurmath.org/

Response headers

vary
Accept-Encoding, Origin
content-encoding
br
x-amz-version-id
null
etag
W/"b3534391cc4917322078a8fc9f46b5b0"
age
12047
via
1.1 ad22d4e4410fd07809425488bf6e79be.cloudfront.net (CloudFront)
alt-svc
h3=":443"; ma=86400
x-cache
Hit from cloudfront
x-amz-cf-id
vWrfw8Ddl60Ydc4-Sv5ilMDUAppDvVN1hLllOQVn2bM78XXcbXhbSg==
date
Sat, 21 Sep 2024 04:01:11 GMT
content-type
text/css
last-modified
Sun, 07 Jan 2024 12:58:27 GMT
server
AmazonS3
x-amz-cf-pop
JFK50-P5
x-amz-server-side-encryption
AES256
offline-shop.css
js.short.io/redirector/main-page-templates/assets/css/
1 KB
850 B
Stylesheet
General
Full URL
https://js.short.io/redirector/main-page-templates/assets/css/offline-shop.css
Requested by
Host: delsurmath.org
URL: https://delsurmath.org/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:2510:6000:1d:20ec:b440:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
AmazonS3 /
Resource Hash
26f73615c0c1ce987e0bf809b114693f9ed90d518efe64a6c51ee6f6fe452a01

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Referer
https://delsurmath.org/

Response headers

vary
Accept-Encoding, Origin
content-encoding
br
x-amz-version-id
null
etag
W/"910c36e520e6cf6e143730915b37f7ee"
via
1.1 ad22d4e4410fd07809425488bf6e79be.cloudfront.net (CloudFront)
alt-svc
h3=":443"; ma=86400
x-cache
Miss from cloudfront
x-amz-cf-id
Jgz1SYHXV9g5GgZxkQPq3cofqAUs5nM4-HsMWmH7OquL_yH1X4tkrw==
date
Sat, 21 Sep 2024 07:21:58 GMT
content-type
text/css
last-modified
Mon, 30 Oct 2023 11:51:14 GMT
server
AmazonS3
x-amz-cf-pop
JFK50-P5
x-amz-server-side-encryption
AES256
z8SzKK8vGEtIurvbXSHJn
shortiougc.com/mainpages-logo/delsurmath.org/
59 KB
60 KB
Image
General
Full URL
https://shortiougc.com/mainpages-logo/delsurmath.org/z8SzKK8vGEtIurvbXSHJn
Requested by
Host: delsurmath.org
URL: https://delsurmath.org/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:261f:e600:7:1957:edc0:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
AmazonS3 /
Resource Hash
7f4bddab7802fe69c82e460195dbc330bc6161bc20fc35e1e080fac297c2d942
Security Headers
Name Value
Strict-Transport-Security max-age=31536000
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 1; mode=block

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Referer
https://delsurmath.org/

Response headers

x-amz-version-id
M3z0CUdS4Tm9_vAkbihhDxOIGFnBGWvw
etag
"d2a4fa9c32c14ed0640586e8f559b47b"
x-content-type-options
nosniff
alt-svc
h3=":443"; ma=86400
x-cache
Miss from cloudfront
x-amz-cf-id
u-FPzQtQ2GWTBkKY02WVcplg7U4ymLUhyH8Ves5TrrFAOShs57ZS_w==
date
Sat, 21 Sep 2024 07:21:58 GMT
content-type
image/png
last-modified
Thu, 05 Sep 2024 21:52:40 GMT
vary
Origin
x-frame-options
SAMEORIGIN
strict-transport-security
max-age=31536000
referrer-policy
strict-origin-when-cross-origin
via
1.1 255e8a45aff6633687f7e4911e918abc.cloudfront.net (CloudFront)
accept-ranges
bytes
content-length
60925
x-xss-protection
1; mode=block
x-amz-cf-pop
JFK52-P3
server
AmazonS3
x-amz-server-side-encryption
AES256
shortio-logo.svg
js.short.io/redirector/main-page-templates/images/
5 KB
3 KB
Image
General
Full URL
https://js.short.io/redirector/main-page-templates/images/shortio-logo.svg
Requested by
Host: delsurmath.org
URL: https://delsurmath.org/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:2510:6000:1d:20ec:b440:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
AmazonS3 /
Resource Hash
ce445eed4de4e162388801223853f9397e052b1b7552c23a1be36c5888d83b84

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Referer
https://delsurmath.org/

Response headers

vary
Accept-Encoding, Origin
content-encoding
br
x-amz-version-id
null
etag
W/"890f3527a548ae07fd033333a9b9d4eb"
age
10930
via
1.1 ad22d4e4410fd07809425488bf6e79be.cloudfront.net (CloudFront)
alt-svc
h3=":443"; ma=86400
x-cache
Hit from cloudfront
x-amz-cf-id
JbkyMTqCqBakV-8vUf93t69woYGVST6a4qpEcIDUdDnRiDwMjoH6nw==
date
Sat, 21 Sep 2024 04:19:48 GMT
content-type
image/svg+xml
last-modified
Mon, 21 Aug 2023 10:33:11 GMT
server
AmazonS3
x-amz-cf-pop
JFK50-P5
x-amz-server-side-encryption
AES256
oRTZdqnXOVDf35Se9rS5H
shortiougc.com/mainpages-background/delsurmath.org/
82 KB
82 KB
Image
General
Full URL
https://shortiougc.com/mainpages-background/delsurmath.org/oRTZdqnXOVDf35Se9rS5H
Requested by
Host: delsurmath.org
URL: https://delsurmath.org/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:261f:e600:7:1957:edc0:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
AmazonS3 /
Resource Hash
596c2776355808dbfc11aa0d84c42e80df80c53eb10479a7371596f8623ac3bf
Security Headers
Name Value
Strict-Transport-Security max-age=31536000
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 1; mode=block

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Referer
https://delsurmath.org/

Response headers

x-amz-version-id
YlWPhW.CSrLqWUjm8Sj4NuHw1uIStlE1
etag
"62085aadfa03f53a32a04294d6b26dfa"
x-content-type-options
nosniff
alt-svc
h3=":443"; ma=86400
x-cache
Miss from cloudfront
x-amz-cf-id
sZIbh0nkqJECNjBKNDk_ilJ2iYsjN_UjRLEXp2d0dhqAyKx-_cFK8w==
date
Sat, 21 Sep 2024 07:21:58 GMT
content-type
image/jpeg
last-modified
Thu, 05 Sep 2024 22:09:00 GMT
vary
Origin
x-frame-options
SAMEORIGIN
strict-transport-security
max-age=31536000
referrer-policy
strict-origin-when-cross-origin
via
1.1 255e8a45aff6633687f7e4911e918abc.cloudfront.net (CloudFront)
accept-ranges
bytes
content-length
83487
x-xss-protection
1; mode=block
x-amz-cf-pop
JFK52-P3
server
AmazonS3
x-amz-server-side-encryption
AES256
css2
fonts.googleapis.com/
63 KB
3 KB
Stylesheet
General
Full URL
https://fonts.googleapis.com/css2?family=Inter:wght@100;200;300;400;500;600;700;800;900&family=Lato:wght@100;300;400;700;900&family=Montserrat:wght@100;200;300;400;500;600;700;800;900&family=PT+Sans:wght@400;700&family=Poppins:wght@100;200;300;400;500;600;700;800;900&family=Source+Sans+Pro:wght@300;400;600;700;900&display=swap
Requested by
Host: js.short.io
URL: https://js.short.io/redirector/main-page-templates/assets/css/style.css
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2607:f8b0:4006:81f::200a , United States, ASN15169 (GOOGLE, US),
Reverse DNS
Software
ESF /
Resource Hash
fec731d1e699b6226d6d9f0a37c905a336c02f33cb2965a4b5251e2ed7969eb7
Security Headers
Name Value
Strict-Transport-Security max-age=31536000
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 0

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Referer
https://js.short.io/

Response headers

content-encoding
gzip
x-content-type-options
nosniff
expires
Sat, 21 Sep 2024 07:21:57 GMT
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
date
Sat, 21 Sep 2024 07:21:57 GMT
content-type
text/css; charset=utf-8
last-modified
Sat, 21 Sep 2024 07:21:57 GMT
x-frame-options
SAMEORIGIN
strict-transport-security
max-age=31536000
link
<https://fonts.gstatic.com>; rel=preconnect; crossorigin
cache-control
private, max-age=86400, stale-while-revalidate=604800
timing-allow-origin
*
cross-origin-opener-policy
same-origin-allow-popups
cross-origin-resource-policy
cross-origin
access-control-allow-origin
*
x-xss-protection
0
server
ESF
all.css
js.short.io/redirector/main-page-templates/assets/css/
98 KB
20 KB
Stylesheet
General
Full URL
https://js.short.io/redirector/main-page-templates/assets/css/all.css
Requested by
Host: js.short.io
URL: https://js.short.io/redirector/main-page-templates/assets/css/style.css
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:2510:6000:1d:20ec:b440:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
AmazonS3 /
Resource Hash
fd20483e451e57fd772c4370d5412d6d0f2f8766bb3a91b1401409f549ed9bc2

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Referer
https://js.short.io/redirector/main-page-templates/assets/css/style.css

Response headers

vary
Accept-Encoding, Origin
content-encoding
br
x-amz-version-id
null
etag
W/"24297832693d6e419af3f1f1766e4e93"
age
1152
via
1.1 ad22d4e4410fd07809425488bf6e79be.cloudfront.net (CloudFront)
alt-svc
h3=":443"; ma=86400
x-cache
Hit from cloudfront
x-amz-cf-id
Q-M8qsQNF8ISA4FzrFvR_yhFu29guck_PYARqSCXRxvXeIcaNmyZYw==
date
Sat, 21 Sep 2024 07:02:46 GMT
content-type
text/css
last-modified
Mon, 30 Oct 2023 11:51:14 GMT
server
AmazonS3
x-amz-cf-pop
JFK50-P5
x-amz-server-side-encryption
AES256
bootstrap.min.css
js.short.io/redirector/main-page-templates/assets/css/
172 KB
23 KB
Stylesheet
General
Full URL
https://js.short.io/redirector/main-page-templates/assets/css/bootstrap.min.css
Requested by
Host: js.short.io
URL: https://js.short.io/redirector/main-page-templates/assets/css/style.css
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:2510:6000:1d:20ec:b440:93a1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
AmazonS3 /
Resource Hash
82dc5afe9a1090dc637b254ab975913e8b0bfe29f9ed737397849702c06634b2

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Referer
https://js.short.io/redirector/main-page-templates/assets/css/style.css

Response headers

vary
Accept-Encoding, Origin
content-encoding
br
x-amz-version-id
null
etag
W/"f50032a257a07d17186d9eaee0d17902"
age
12047
via
1.1 ad22d4e4410fd07809425488bf6e79be.cloudfront.net (CloudFront)
alt-svc
h3=":443"; ma=86400
x-cache
Hit from cloudfront
x-amz-cf-id
mBMVZ2HTPt1MCRZJoVuhpd4jbuiUNiCx8KBczPjnROE3yg9WoZRYiQ==
date
Sat, 21 Sep 2024 04:01:11 GMT
content-type
text/css
last-modified
Mon, 30 Oct 2023 11:51:14 GMT
server
AmazonS3
x-amz-cf-pop
JFK50-P5
x-amz-server-side-encryption
AES256
UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7.woff2
fonts.gstatic.com/s/inter/v18/
47 KB
47 KB
Font
General
Full URL
https://fonts.gstatic.com/s/inter/v18/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7.woff2
Requested by
Host: fonts.googleapis.com
URL: https://fonts.googleapis.com/css2?family=Inter:wght@100;200;300;400;500;600;700;800;900&family=Lato:wght@100;300;400;700;900&family=Montserrat:wght@100;200;300;400;500;600;700;800;900&family=PT+Sans:wght@400;700&family=Poppins:wght@100;200;300;400;500;600;700;800;900&family=Source+Sans+Pro:wght@300;400;600;700;900&display=swap
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
142.250.65.227 Plainview, United States, ASN15169 (GOOGLE, US),
Reverse DNS
lga25s73-in-f3.1e100.net
Software
sffe /
Resource Hash
f052ee44c3728dfd23aba8a4567150bc314d23903026fbb6ad089422c2df56af
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/129.0.0.0 Safari/537.36
Origin
https://delsurmath.org
Referer
https://fonts.googleapis.com/

Response headers

age
374890
report-to
{"group":"apps-themes","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/apps-themes"}]}
x-content-type-options
nosniff
expires
Tue, 16 Sep 2025 23:13:47 GMT
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
date
Mon, 16 Sep 2024 23:13:47 GMT
last-modified
Mon, 29 Jul 2024 22:51:01 GMT
content-type
font/woff2
cache-control
public, max-age=31536000
timing-allow-origin
*
cross-origin-opener-policy
same-origin; report-to="apps-themes"
cross-origin-resource-policy
cross-origin
content-security-policy-report-only
require-trusted-types-for 'script'; report-uri https://csp.withgoogle.com/csp/apps-themes
accept-ranges
bytes
access-control-allow-origin
*
content-length
48444
x-xss-protection
0
server
sffe
fa-solid-900.woff2
js.short.io/redirector/main-page-templates/assets/webfonts/
0
0

fa-solid-900.ttf
js.short.io/redirector/main-page-templates/assets/webfonts/
379 KB
152 KB
Font
General
Full URL
https://js.short.io/redirector/main-page-templates/assets/webfonts/fa-solid-900.ttf
Requested by
Host: js.short.io
URL: https://js.short.io/redirector/main-page-templates/assets/css/all.css
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
18.164.96.117 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
server-18-164-96-117.jfk50.r.cloudfront.net
Software
AmazonS3 /
Resource Hash
03f2986c0824c68bdaf1e16947352f5fe417d03741806097fa9ea7131fe3a019

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Origin
https://delsurmath.org
Referer
https://js.short.io/redirector/main-page-templates/assets/css/all.css

Response headers

access-control-max-age
3000
content-encoding
br
etag
W/"738201559a50502aacabdbdb02720910"
x-amz-version-id
null
access-control-allow-methods
GET
alt-svc
h3=":443"; ma=86400
x-cache
Miss from cloudfront
x-amz-cf-id
tg_lmSaVIaw3PLqBSwL8NPYm-CMRLBBqQ07ET1xtHNs0fl73TACfog==
date
Sat, 21 Sep 2024 07:21:58 GMT
content-type
font/ttf
vary
Accept-Encoding
last-modified
Mon, 21 Aug 2023 18:18:44 GMT
via
1.1 bf8d7cb6fca5d51158e1109ca40fe242.cloudfront.net (CloudFront)
access-control-allow-origin
*
x-amz-cf-pop
JFK50-P5
server
AmazonS3
x-amz-server-side-encryption
AES256
favicon.ico
delsurmath.org/
5 KB
5 KB
Other
General
Full URL
https://delsurmath.org/favicon.ico
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
207.174.61.1 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
/ Short.io/Edge
Resource Hash
ec518f4bcd67976847fc5c68271d764fb945fbb13b49d28d9fb4db562fccad68
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Referer
https://delsurmath.org/

Response headers

date
Sat, 21 Sep 2024 07:21:57 GMT
content-type
text/html; charset=utf-8
x-powered-by
Short.io/Edge
x-content-type-options
nosniff

Failed requests

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

Domain
js.short.io
URL
https://js.short.io/redirector/main-page-templates/assets/webfonts/fa-solid-900.woff2

Verdicts & Comments Add Verdict or Comment

0 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.

0 Cookies

3 Console Messages

Source Level URL
Text
javascript error URL: https://delsurmath.org/
Message:
Access to font at 'https://js.short.io/redirector/main-page-templates/assets/webfonts/fa-solid-900.woff2' from origin 'https://delsurmath.org' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
network error URL: https://js.short.io/redirector/main-page-templates/assets/webfonts/fa-solid-900.woff2
Message:
Failed to load resource: net::ERR_FAILED
network error URL: https://delsurmath.org/favicon.ico
Message:
Failed to load resource: the server responded with a status of 404 ()

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-Content-Type-Options nosniff