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polyfill.io Open in urlscan Pro
2a04:4e42:e00::282  Public Scan

Go To Rescan Add Verdict Report
Submitted URL: http://polyfill.io/
Effective URL: http://polyfill.io/v3/
Submission: On September 07 via manual from US — Scanned from DE
 Behaviour Indicators
Similar DOM Content API
Verdicts

Summary

This website contacted 3 IPs in 1 countries across 2 domains to perform 11 HTTP transactions. The main IP is 2a04:4e42:e00::282, located in United States and belongs to FASTLY, US. The main domain is polyfill.io. The Cisco Umbrella rank of the primary domain is 1592.
This is the only time polyfill.io was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
1 6 2a04:4e42:e00... 54113 (FASTLY)
5 151.101.66.209 54113 (FASTLY)
1 2a04:4e42:600... 54113 (FASTLY)
11 3
Apex Domain
Subdomains		 Transfer
7 polyfill.io
polyfill.io — Cisco Umbrella Rank: 1592
cdn.polyfill.io — Cisco Umbrella Rank: 3263
59 KB
5 ft.com
www.ft.com — Cisco Umbrella Rank: 29014
160 KB
11 2
Domain Requested by
6 polyfill.io 1 redirects polyfill.io
5 www.ft.com polyfill.io
1 cdn.polyfill.io polyfill.io
11 3

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

Domain
github.com
Subject Issuer Validity Valid
*.ft.com
GlobalSign Atlas R3 DV TLS CA 2023 Q2		 2023-06-22 -
2024-07-23		 a year crt.sh
polyfill.io
Certainly Intermediate R1		 2023-08-24 -
2023-09-23		 a month crt.sh

This page contains 1 frames:

Primary Page: http://polyfill.io/v3/
Frame ID: F01F1A076014413E26C89475344C7A74
Requests: 11 HTTP requests in this frame

Screenshot
Live screenshot
Full Image

Page Title

Polyfill.io

Page URL History Show full URLs

  1. http://polyfill.io/ HTTP 301
    http://polyfill.io/v3/ Page URL

Detected technologies

Overall confidence: 100%
Detected patterns
  • (?:prototype|protoaculous)(?:-([\d.]*[\d]))?.*\.js
Overall confidence: 100%
Detected patterns
  • /polyfill\.min\.js

Page Statistics

11
Requests

55 %
HTTPS

67 %
IPv6

2
Domains

3
Subdomains

3
IPs

1
Countries

218 kB
Transfer

516 kB
Size

0
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://polyfill.io/ HTTP 301
    http://polyfill.io/v3/ Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

11 HTTP transactions

Resource
Path		 Size
x-fer		 Type
MIME-Type
Primary Request /
polyfill.io/v3/
Redirect Chain
  • http://polyfill.io/
  • http://polyfill.io/v3/
10 KB
3 KB 		Document
General
Check archive.org
Download Go to
Full URL
http://polyfill.io/v3/
Protocol
HTTP/1.1
Server
2a04:4e42:e00::282 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
/
Resource Hash
a4d7fdfb07ca118fd241cebd24f5fea43d1083649abeaecbea6dc6b26125a41e
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubdomains; preload
X-Content-Type-Options nosniff
X-Xss-Protection 1; mode=block

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.5845.179 Safari/537.36
accept-language
de-DE,de;q=0.9

Response headers

Accept-Ranges
bytes
Age
576841
Connection
keep-alive
Content-Length
2675
Date
Thu, 07 Sep 2023 16:20:25 GMT
Referrer-Policy
origin-when-cross-origin
Server-Timing
HIT, fastly;desc="Edge time";dur=0
Strict-Transport-Security
max-age=31536000; includeSubdomains; preload
Timing-Allow-Origin
*
X-Content-Type-Options
nosniff
X-XSS-Protection
1; mode=block
alt-svc
h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400
cache-control
public, s-maxage=31536000, max-age=604800, stale-while-revalidate=604800, stale-if-error=604800, immutable
content-encoding
gzip
content-type
text/html
etag
W/"pNf9+wfKEY/SQc69JPX+pD0Qg2Savq7L6m3GsmElpB4="
last-modified
Wed, 26 Jul 2023 10:56:42 GMT

Redirect headers

Accept-Ranges
bytes
Age
222032
Cache-Control
public, s-maxage=31536000, max-age=604800, stale-while-revalidate=604800, stale-if-error=604800, immutable
Connection
keep-alive
Content-Length
0
Date
Thu, 07 Sep 2023 16:20:24 GMT
Referrer-Policy
origin-when-cross-origin
Server-Timing
HIT, fastly;desc="Edge time";dur=0
Strict-Transport-Security
max-age=31536000; includeSubdomains; preload
Timing-Allow-Origin
*
X-Content-Type-Options
nosniff
alt-svc
h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400
location
/v3/
MetricWeb-Semibold.woff
www.ft.com/__origami/service/build/v2/files/o-fonts-assets@1.3.2/ 		50 KB
50 KB 		Font
General
Check archive.org
Download Go to
Full URL
https://www.ft.com/__origami/service/build/v2/files/o-fonts-assets@1.3.2/MetricWeb-Semibold.woff
Requested by
Host: polyfill.io
URL: http://polyfill.io/v3/
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
151.101.66.209 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
/
Resource Hash
8aaace27bb0d6f4f3d61d12596fed0038a6ca18250e98f71bde9be4eadcf5ab5
Security Headers
Name Value
Strict-Transport-Security max-age=63072000; includeSubDomains; preload
X-Content-Type-Options nosniff

Request headers

Referer
http://polyfill.io/
Origin
http://polyfill.io
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/116.0.5845.179 Safari/537.36

Response headers

date
Thu, 07 Sep 2023 16:20:25 GMT
strict-transport-security
max-age=63072000; includeSubDomains; preload
x-content-type-options
nosniff
last-modified
Fri, 08 Jul 2022 15:56:57 GMT
age
57
vary
FT-Site, Accept-Encoding,Origin
content-type
font/woff
access-control-allow-origin
http://polyfill.io
cache-control
public, max-age=300, stale-while-revalidate=600, stale-if-error=600, s-maxage=600
server-timing
total; dur=49.470849; desc="Total Response Time"
ft-suppress-friendly-error
true
accept-ranges
bytes
content-length
51558
MetricWeb-Regular.woff
www.ft.com/__origami/service/build/v2/files/o-fonts-assets@1.3.2/ 		49 KB
49 KB 		Font
General
Check archive.org
Download Go to
Full URL
https://www.ft.com/__origami/service/build/v2/files/o-fonts-assets@1.3.2/MetricWeb-Regular.woff
Requested by
Host: polyfill.io
URL: http://polyfill.io/v3/
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
151.101.66.209 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
/
Resource Hash
6696d1217c24fb848514b39dd908a3f645a5122719cf2bf7640ef9cd5da5bd5d
Security Headers
Name Value
Strict-Transport-Security max-age=63072000; includeSubDomains; preload
X-Content-Type-Options nosniff

Request headers

Referer
http://polyfill.io/
Origin
http://polyfill.io
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/116.0.5845.179 Safari/537.36

Response headers

date
Thu, 07 Sep 2023 16:20:25 GMT
strict-transport-security
max-age=63072000; includeSubDomains; preload
x-content-type-options
nosniff
last-modified
Fri, 08 Jul 2022 15:56:51 GMT
age
360
vary
FT-Site, Accept-Encoding,Origin
content-type
font/woff
access-control-allow-origin
http://polyfill.io
cache-control
public, max-age=300, stale-while-revalidate=600, stale-if-error=600, s-maxage=600
server-timing
total; dur=31.321859; desc="Total Response Time"
ft-suppress-friendly-error
true
accept-ranges
bytes
content-length
50290
index.css
polyfill.io/css/ 		135 KB
21 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
http://polyfill.io/css/index.css
Requested by
Host: polyfill.io
URL: http://polyfill.io/v3/
Protocol
HTTP/1.1
Server
2a04:4e42:e00::282 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
/
Resource Hash
fceafcad0917c36aa60a4cd550a5cbe3678c2e74a2d454ffc1ebcf68c2893c57
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubdomains; preload
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
http://polyfill.io/v3/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.5845.179 Safari/537.36

Response headers

Strict-Transport-Security
max-age=31536000; includeSubdomains; preload
content-encoding
gzip
X-Content-Type-Options
nosniff
Date
Thu, 07 Sep 2023 16:20:25 GMT
Age
578903
Connection
keep-alive
Server-Timing
HIT-CLUSTER, fastly;desc="Edge time";dur=2
alt-svc
h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400
Content-Length
21234
Referrer-Policy
origin-when-cross-origin
last-modified
Wed, 26 Jul 2023 10:56:45 GMT
etag
W/"/Or8rQkXw2qmCkzVUKXL42eMLnSi1FT/wevPaMKJPFc="
content-type
text/css
cache-control
public, s-maxage=31536000, max-age=604800, stale-while-revalidate=604800, stale-if-error=604800, immutable
Accept-Ranges
bytes
Timing-Allow-Origin
*
polyfill.min.js
cdn.polyfill.io/v3/ 		101 B
683 B 		Script
General
Check archive.org
Download Go to
Full URL
https://cdn.polyfill.io/v3/polyfill.min.js?features=Array.from,Array.isArray,Array.prototype.entries,Array.prototype.filter,Array.prototype.forEach,Array.prototype.includes,Array.prototype.indexOf,Array.prototype.keys,Array.prototype.map,Array.prototype.reduce,ArrayBuffer,console,CustomEvent,document,Element,Function.prototype.bind,JSON,Map,Object.assign,Object.defineProperty,Object.entries,Object.getOwnPropertyDescriptor,Object.keys,Set,String.prototype.includes,String.prototype.trim,Symbol,Symbol.iterator,URLSearchParams,WeakMap,WeakSet
Requested by
Host: polyfill.io
URL: http://polyfill.io/v3/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a04:4e42:600::282 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
/
Resource Hash
d7f817255acac24d24766a420471f23c0796b5228b84f8432bf70570ed870b72
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubdomains; preload
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
http://polyfill.io/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.5845.179 Safari/537.36

Response headers

strict-transport-security
max-age=31536000; includeSubdomains; preload
content-encoding
gzip
x-content-type-options
nosniff
date
Thu, 07 Sep 2023 16:20:25 GMT
age
828872
detected-user-agent
Chrome/116.0.0
useragent_normaliser
chrome/116.0.0
server-timing
HIT-CLUSTER, fastly;desc="Edge time";dur=1
alt-svc
h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400
content-length
113
referrer-policy
origin-when-cross-origin
last-modified
Fri, 25 Aug 2023 12:52:31 GMT
fastly_service_version
227
vary
User-Agent, Accept-Encoding
access-control-allow-methods
GET,HEAD,OPTIONS
content-type
text/javascript; charset=UTF-8
access-control-allow-origin
*
normalized-user-agent
chrome/116.0.0
cache-control
public, s-maxage=31536000, max-age=604800, stale-while-revalidate=604800, stale-if-error=604800, immutable
accept-ranges
bytes
timing-allow-origin
*
index.min.js
polyfill.io/js/ 		43 KB
15 KB 		Script
General
Check archive.org
Download Go to
Full URL
http://polyfill.io/js/index.min.js
Requested by
Host: polyfill.io
URL: http://polyfill.io/v3/
Protocol
HTTP/1.1
Server
2a04:4e42:e00::282 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
/
Resource Hash
94f9fa882555df5de4c3bcad0b3bdef2f7258afc2f9b331ccbe9a9abe22d8fd8
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubdomains; preload
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
http://polyfill.io/v3/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.5845.179 Safari/537.36

Response headers

Strict-Transport-Security
max-age=31536000; includeSubdomains; preload
content-encoding
gzip
X-Content-Type-Options
nosniff
Date
Thu, 07 Sep 2023 16:20:25 GMT
Age
1431288
Connection
keep-alive
Server-Timing
HIT-CLUSTER, fastly;desc="Edge time";dur=5
alt-svc
h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400
Content-Length
14584
Referrer-Policy
origin-when-cross-origin
last-modified
Wed, 26 Jul 2023 10:56:45 GMT
etag
W/"lPn6iCVV313kw7ytCzve8vclivwvmzMcy+mpq+Itj9g="
content-type
application/javascript
cache-control
public, s-maxage=31536000, max-age=604800, stale-while-revalidate=604800, stale-if-error=604800, immutable
Accept-Ranges
bytes
Timing-Allow-Origin
*
logo.svg
polyfill.io/img/ 		283 B
913 B 		Image
General
Check archive.org
Download Go to Show image
Full URL
http://polyfill.io/img/logo.svg
Requested by
Host: polyfill.io
URL: http://polyfill.io/css/index.css
Protocol
HTTP/1.1
Server
2a04:4e42:e00::282 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
/
Resource Hash
d02f73ecd9e7ea6d737f0cbf9aca23855dc5dc7b78443494f1e61c29c29914f1
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubdomains; preload
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
http://polyfill.io/css/index.css
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.5845.179 Safari/537.36

Response headers

Strict-Transport-Security
max-age=31536000; includeSubdomains; preload
content-encoding
gzip
X-Content-Type-Options
nosniff
Date
Thu, 07 Sep 2023 16:20:25 GMT
Age
1260811
Connection
keep-alive
Server-Timing
HIT-CLUSTER, fastly;desc="Edge time";dur=2
alt-svc
h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400
Content-Length
193
Referrer-Policy
origin-when-cross-origin
last-modified
Tue, 03 Jan 2023 01:34:12 GMT
etag
W/"0C9z7Nnn6m1zfwy/msojhV3F3Ht4RDSU8eYcKcKZFPE="
content-type
image/svg+xml
cache-control
public, s-maxage=31536000, max-age=604800, stale-while-revalidate=604800, stale-if-error=604800, immutable
Accept-Ranges
bytes
Timing-Allow-Origin
*
home-page-hero.jpg
polyfill.io/img/ 		168 KB
17 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
http://polyfill.io/img/home-page-hero.jpg
Requested by
Host: polyfill.io
URL: http://polyfill.io/css/index.css
Protocol
HTTP/1.1
Server
2a04:4e42:e00::282 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
/
Resource Hash
08f193a191fd6d4319b975a30806d959a08b654a9bc6ab719fc13163d60160d6
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubdomains; preload
X-Content-Type-Options nosniff

Request headers

accept-language
de-DE,de;q=0.9
Referer
http://polyfill.io/css/index.css
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.5845.179 Safari/537.36

Response headers

Strict-Transport-Security
max-age=31536000; includeSubdomains; preload
content-encoding
gzip
X-Content-Type-Options
nosniff
Date
Thu, 07 Sep 2023 16:20:25 GMT
Age
322094
Connection
keep-alive
Server-Timing
HIT-CLUSTER, fastly;desc="Edge time";dur=2
alt-svc
h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400
Content-Length
16370
Referrer-Policy
origin-when-cross-origin
last-modified
Tue, 03 Jan 2023 01:34:12 GMT
etag
W/"CPGToZH9bUMZuXWjCAbZWaCLZUqbxqtxn8ExY9YBYNY="
content-type
image/jpeg
cache-control
public, s-maxage=31536000, max-age=604800, stale-while-revalidate=604800, stale-if-error=604800, immutable
Accept-Ranges
bytes
Timing-Allow-Origin
*
font
www.ft.com/__origami/service/build/v3/ 		30 KB
31 KB 		Font
General
Check archive.org
Download Go to
Full URL
https://www.ft.com/__origami/service/build/v3/font?version=1.12&font_name=MetricWeb-Semibold&system_code=origami&font_format=woff2
Requested by
Host: polyfill.io
URL: http://polyfill.io/css/index.css
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
151.101.66.209 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
/
Resource Hash
2d29f56691db39f980cbe5d600355b9fe1173563106aed67cf6bd3368af8f3af
Security Headers
Name Value
Strict-Transport-Security max-age=63072000; includeSubDomains; preload

Request headers

Referer
http://polyfill.io/
Origin
http://polyfill.io
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/116.0.5845.179 Safari/537.36

Response headers

date
Thu, 07 Sep 2023 16:20:25 GMT
strict-transport-security
max-age=63072000; includeSubDomains; preload
last-modified
Thu, 07 Sep 2023 09:25:44 GMT
age
24881
etag
W/"79ac-18a6ef6363b"
vary
Origin
content-type
font/woff2
access-control-allow-origin
http://polyfill.io
cache-control
public, max-age=86400, stale-if-error=604800, stale-while-revalidate=300000
server-timing
total; dur=14028.616938; desc="Total Response Time"
ft-suppress-friendly-error
true
accept-ranges
bytes
content-length
31148
font
www.ft.com/__origami/service/build/v3/ 		28 KB
29 KB 		Font
General
Check archive.org
Download Go to
Full URL
https://www.ft.com/__origami/service/build/v3/font?version=1.12&font_name=MetricWeb-Regular&system_code=origami&font_format=woff2
Requested by
Host: polyfill.io
URL: http://polyfill.io/css/index.css
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
151.101.66.209 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
/
Resource Hash
8ef66d8994585d8486b906d00462cbc9c0fd80482a381e3fdb237bac1bf18b59
Security Headers
Name Value
Strict-Transport-Security max-age=63072000; includeSubDomains; preload

Request headers

Referer
http://polyfill.io/
Origin
http://polyfill.io
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/116.0.5845.179 Safari/537.36

Response headers

date
Thu, 07 Sep 2023 16:20:25 GMT
strict-transport-security
max-age=63072000; includeSubDomains; preload
last-modified
Thu, 07 Sep 2023 09:30:44 GMT
age
24581
etag
W/"71c0-18a6efaca01"
vary
Origin
content-type
font/woff2
access-control-allow-origin
http://polyfill.io
cache-control
public, max-age=86400, stale-if-error=604800, stale-while-revalidate=300000
server-timing
total; dur=8779.796534; desc="Total Response Time"
ft-suppress-friendly-error
true
accept-ranges
bytes
content-length
29120
ftsocial-v2%3Agithub
www.ft.com/__origami/service/image/v2/images/raw/ 		805 B
1 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://www.ft.com/__origami/service/image/v2/images/raw/ftsocial-v2%3Agithub?source=origami-polyfill-service&tint=000000&format=svg
Requested by
Host: polyfill.io
URL: http://polyfill.io/css/index.css
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
151.101.66.209 , United States, ASN54113 (FASTLY, US),
Reverse DNS
Software
/
Resource Hash
1fd07735c631cfb498b5472fd442f2225d219516bc386ee29308eb6cf459c045
Security Headers
Name Value
Strict-Transport-Security max-age=63072000; includeSubDomains; preload

Request headers

accept-language
de-DE,de;q=0.9
Referer
http://polyfill.io/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.5845.179 Safari/537.36

Response headers

date
Thu, 07 Sep 2023 16:20:25 GMT
strict-transport-security
max-age=63072000; includeSubDomains; preload
last-modified
Mon, 14 Sep 2020 18:45:31 GMT
age
813234
etag
"ebe6f0a7a3df845e333805aeabcd1de1"
vary
Content-Dpr, Accept, FT-Site, Accept-Encoding, FT-Site
content-type
image/svg+xml
access-control-allow-origin
*
cache-control
public, max-age=604800, stale-while-revalidate=604800, stale-if-error=604800
server-timing
HIT, fastly;desc="Edge time";dur=0, HIT-CLUSTER, fastly;desc="Edge time";dur=1
ft-suppress-friendly-error
true
timing-allow-origin
*
accept-ranges
bytes
content-length
805

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0 JavaScript Global Variables

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0 Cookies

2 Console Messages

Source Level URL
Text
javascript warning URL: http://polyfill.io/v3/
Message:
The resource https://www.ft.com/__origami/service/build/v2/files/o-fonts-assets@1.3.2/MetricWeb-Regular.woff was preloaded using link preload but not used within a few seconds from the window's load event. Please make sure it has an appropriate `as` value and it is preloaded intentionally.
javascript warning URL: http://polyfill.io/v3/
Message:
The resource https://www.ft.com/__origami/service/build/v2/files/o-fonts-assets@1.3.2/MetricWeb-Semibold.woff was preloaded using link preload but not used within a few seconds from the window's load event. Please make sure it has an appropriate `as` value and it is preloaded intentionally.

Security Headers

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Header Value
Strict-Transport-Security max-age=31536000; includeSubdomains; preload
X-Content-Type-Options nosniff
X-Xss-Protection 1; mode=block