Submitted URL: http://www.housing.wisc.edu/
Effective URL: https://www.housing.wisc.edu/
Submission: On December 12 via api from US — Scanned from DE

Summary

This website contacted 3 IPs in 1 countries across 6 domains to perform 25 HTTP transactions. The main IP is 99.83.210.234, located in United States and belongs to AMAZON-02, US. The main domain is www.housing.wisc.edu.
TLS certificate: Issued by Amazon RSA 2048 M02 on November 15th 2023. Valid for: a year.
This is the only time www.housing.wisc.edu was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
1 3 99.83.210.234 16509 (AMAZON-02)
6 99.84.146.39 16509 (AMAZON-02)
25 3
Domain Requested by
6 06f9095e3c8c.42c8209d.us-east-1.token.awswaf.com www.housing.wisc.edu
06f9095e3c8c.42c8209d.us-east-1.token.awswaf.com
3 www.housing.wisc.edu 1 redirects www.housing.wisc.edu
0 cdn.wisc.cloud Failed www.housing.wisc.edu
0 platform.twitter.com Failed www.housing.wisc.edu
0 d9mfr5qxp4i37.cloudfront.net Failed www.housing.wisc.edu
0 www.googletagmanager.com Failed www.housing.wisc.edu
25 6

This site contains no links.

Subject Issuer Validity Valid
*.42c8209d.us-east-1.token.awswaf.com
Amazon RSA 2048 M01
2023-06-05 -
2024-07-03
a year crt.sh
www.housing.wisc.edu
Amazon RSA 2048 M02
2023-11-15 -
2024-12-13
a year crt.sh

This page contains 1 frames:

Primary Page: https://www.housing.wisc.edu/
Frame ID: 9352A072280BD918C3953969DBB414D7
Requests: 25 HTTP requests in this frame

Screenshot


Page URL History Show full URLs

  1. http://www.housing.wisc.edu/ Page URL
  2. http://www.housing.wisc.edu/ HTTP 301
    https://www.housing.wisc.edu/ Page URL

Page Statistics

25
Requests

28 %
HTTPS

0 %
IPv6

6
Domains

6
Subdomains

3
IPs

1
Countries

290 kB
Transfer

1160 kB
Size

1
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://www.housing.wisc.edu/ Page URL
  2. http://www.housing.wisc.edu/ HTTP 301
    https://www.housing.wisc.edu/ Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

25 HTTP transactions

Resource
Path
Size
x-fer
Type
MIME-Type
/
www.housing.wisc.edu/
2 KB
3 KB
Document
General
Full URL
http://www.housing.wisc.edu/
Protocol
HTTP/1.1
Server
99.83.210.234 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
a24308534a5d3e6fb.awsglobalaccelerator.com
Software
awselb/2.0 /
Resource Hash
ab849334df62c4e66054f3e0efdeac61c56ea4e81bef00a3cf231cd9b2c4e812

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.71 Safari/537.36
accept-language
de-DE,de;q=0.9

Response headers

Cache-Control
no-store, max-age=0
Connection
keep-alive
Content-Length
2359
Content-Type
text/html; charset=UTF-8
Date
Tue, 12 Dec 2023 20:12:47 GMT
Server
awselb/2.0
x-amzn-waf-action
challenge
challenge.js
06f9095e3c8c.42c8209d.us-east-1.token.awswaf.com/06f9095e3c8c/e4291fc6cae7/1d3ec37e5ef3/
1 MB
283 KB
Script
General
Full URL
https://06f9095e3c8c.42c8209d.us-east-1.token.awswaf.com/06f9095e3c8c/e4291fc6cae7/1d3ec37e5ef3/challenge.js
Requested by
Host: www.housing.wisc.edu
URL: http://www.housing.wisc.edu/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
99.84.146.39 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
server-99-84-146-39.txl52.r.cloudfront.net
Software
/
Resource Hash
e01b1db723d102d7ad3ff2d3a0cb56664ea95fbe0678faa587122573cab9fe8c

Request headers

accept-language
de-DE,de;q=0.9
Referer
http://www.housing.wisc.edu/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.71 Safari/537.36

Response headers

pragma
no-cache
date
Tue, 12 Dec 2023 20:12:47 GMT
content-encoding
gzip
via
1.1 41232b1248b5064ae14550b383a46694.cloudfront.net (CloudFront)
last-modified
Tue, 12 Dec 2023 20:12:47 +0000
x-amz-cf-pop
TXL52-C1
vary
Accept-Encoding
x-cache
Miss from cloudfront
x-amzn-waf-challenge-id
Root=1-6578bebf-03e46d5e184899536ecd3dca
content-type
text/javascript
cache-control
private, max-age=86400
x-amz-cf-id
FLqrkyDNCKnd4DCzWlwRGeGlII544_3sviEoyhNCDR_Bmga0CdxZfg==
expires
0
report
06f9095e3c8c.42c8209d.us-east-1.token.awswaf.com/06f9095e3c8c/e4291fc6cae7/1d3ec37e5ef3/
0
266 B
Fetch
General
Full URL
https://06f9095e3c8c.42c8209d.us-east-1.token.awswaf.com/06f9095e3c8c/e4291fc6cae7/1d3ec37e5ef3/report
Requested by
Host: 06f9095e3c8c.42c8209d.us-east-1.token.awswaf.com
URL: https://06f9095e3c8c.42c8209d.us-east-1.token.awswaf.com/06f9095e3c8c/e4291fc6cae7/1d3ec37e5ef3/challenge.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
99.84.146.39 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
server-99-84-146-39.txl52.r.cloudfront.net
Software
/
Resource Hash
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

Referer
http://www.housing.wisc.edu/
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/120.0.6099.71 Safari/537.36
Content-Type
text/plain;charset=UTF-8

Response headers

date
Tue, 12 Dec 2023 20:12:49 GMT
via
1.1 9e9671d1669bd7a6c194fae423e5778c.cloudfront.net (CloudFront)
x-amz-cf-pop
TXL52-C1
access-control-max-age
86400
access-control-allow-methods
POST
x-cache
Miss from cloudfront
access-control-allow-origin
*
content-length
0
x-amz-cf-id
WJxJU69pfaM_7bDGNuopk300xGcdvKNg59AaQVbqZ1uBVtCjLzUHxw==
inputs
06f9095e3c8c.42c8209d.us-east-1.token.awswaf.com/06f9095e3c8c/e4291fc6cae7/1d3ec37e5ef3/
477 B
893 B
Fetch
General
Full URL
https://06f9095e3c8c.42c8209d.us-east-1.token.awswaf.com/06f9095e3c8c/e4291fc6cae7/1d3ec37e5ef3/inputs?client=browser
Requested by
Host: 06f9095e3c8c.42c8209d.us-east-1.token.awswaf.com
URL: https://06f9095e3c8c.42c8209d.us-east-1.token.awswaf.com/06f9095e3c8c/e4291fc6cae7/1d3ec37e5ef3/challenge.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
99.84.146.39 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
server-99-84-146-39.txl52.r.cloudfront.net
Software
/
Resource Hash
17a09e42b7e68e56b1df8a931951c5d9879afb95a8f1a07d49eb9bf626088af9

Request headers

accept-language
de-DE,de;q=0.9
Referer
http://www.housing.wisc.edu/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.71 Safari/537.36

Response headers

pragma
no-cache
date
Tue, 12 Dec 2023 20:12:51 GMT
via
1.1 9e9671d1669bd7a6c194fae423e5778c.cloudfront.net (CloudFront)
x-amz-cf-pop
TXL52-C1
access-control-max-age
86400
access-control-allow-methods
OPTIONS,GET,POST
content-type
application/json
access-control-allow-origin
*
x-cache
Miss from cloudfront
x-amzn-waf-challenge-id
Root=1-6578bec3-27a061d805a4cfe46ab7c027
cache-control
no-cache, no-store, must-revalidate
content-length
477
x-amz-cf-id
sf1EHg9OoruxK4NMOJc2IsbTlWRGhmyIr-ft-nlcbfPhnBnK9wl1Ig==
expires
0
verify
06f9095e3c8c.42c8209d.us-east-1.token.awswaf.com/06f9095e3c8c/e4291fc6cae7/1d3ec37e5ef3/
316 B
734 B
Fetch
General
Full URL
https://06f9095e3c8c.42c8209d.us-east-1.token.awswaf.com/06f9095e3c8c/e4291fc6cae7/1d3ec37e5ef3/verify
Requested by
Host: 06f9095e3c8c.42c8209d.us-east-1.token.awswaf.com
URL: https://06f9095e3c8c.42c8209d.us-east-1.token.awswaf.com/06f9095e3c8c/e4291fc6cae7/1d3ec37e5ef3/challenge.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
99.84.146.39 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
server-99-84-146-39.txl52.r.cloudfront.net
Software
/
Resource Hash
8e1d88e97b27f797fef65b365702bc3c1ddfa010cc9cd7a4d12546ff5659c6c5

Request headers

Referer
http://www.housing.wisc.edu/
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/120.0.6099.71 Safari/537.36
Content-Type
text/plain;charset=UTF-8

Response headers

pragma
no-cache
date
Tue, 12 Dec 2023 20:12:51 GMT
via
1.1 9e9671d1669bd7a6c194fae423e5778c.cloudfront.net (CloudFront)
x-amz-cf-pop
TXL52-C1
access-control-max-age
86400
access-control-allow-methods
OPTIONS,GET,POST
content-type
application/json
access-control-allow-origin
*
x-cache
Miss from cloudfront
x-amzn-waf-challenge-id
Root=1-6578bec3-04fab4c8351a908849af2bb8
cache-control
no-cache, no-store, must-revalidate
content-length
316
x-amz-cf-id
Va2xeGKZbHAkHGWDz5n_fK19uB6kR_-oHpZ-Iw1VOUUI7eixyMgx1w==
expires
0
Primary Request /
www.housing.wisc.edu/
Redirect Chain
  • http://www.housing.wisc.edu/
  • https://www.housing.wisc.edu/
91 KB
0
Document
General
Full URL
https://www.housing.wisc.edu/
Requested by
Host: www.housing.wisc.edu
URL: http://www.housing.wisc.edu/
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
99.83.210.234 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
a24308534a5d3e6fb.awsglobalaccelerator.com
Software
Apache / PHP/8.1.23
Resource Hash
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

Referer
http://www.housing.wisc.edu/
Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.71 Safari/537.36
accept-language
de-DE,de;q=0.9

Response headers

access-control-allow-origin
*
content-encoding
gzip
content-type
text/html; charset=UTF-8
date
Tue, 12 Dec 2023 20:12:53 GMT
etag
"2e49d1de58dc57ce01e48c14e00b271b"
last-modified
Tue, 12 Dec 2023 20:12:53 GMT
link
<https://www.housing.wisc.edu/wp-json/>; rel="https://api.w.org/", <https://www.housing.wisc.edu/wp-json/wp/v2/pages/2>; rel="alternate"; type="application/json", <https://www.housing.wisc.edu/>; rel=shortlink
referrer-policy
server
Apache
vary
Accept-Encoding
x-content-type-options
nosniff
x-pingback
https://www.housing.wisc.edu/xmlrpc.php
x-powered-by
PHP/8.1.23

Redirect headers

Connection
keep-alive
Content-Length
134
Content-Type
text/html
Date
Tue, 12 Dec 2023 20:12:51 GMT
Location
https://www.housing.wisc.edu:443/
Server
awselb/2.0
telemetry
06f9095e3c8c.42c8209d.us-east-1.token.awswaf.com/06f9095e3c8c/e4291fc6cae7/1d3ec37e5ef3/
884 B
1 KB
Fetch
General
Full URL
https://06f9095e3c8c.42c8209d.us-east-1.token.awswaf.com/06f9095e3c8c/e4291fc6cae7/1d3ec37e5ef3/telemetry
Requested by
Host: 06f9095e3c8c.42c8209d.us-east-1.token.awswaf.com
URL: https://06f9095e3c8c.42c8209d.us-east-1.token.awswaf.com/06f9095e3c8c/e4291fc6cae7/1d3ec37e5ef3/challenge.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
99.84.146.39 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
server-99-84-146-39.txl52.r.cloudfront.net
Software
/
Resource Hash

Request headers

Referer
http://www.housing.wisc.edu/
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/120.0.6099.71 Safari/537.36
Content-Type
text/plain;charset=UTF-8

Response headers

pragma
no-cache
date
Tue, 12 Dec 2023 20:12:52 GMT
via
1.1 9e9671d1669bd7a6c194fae423e5778c.cloudfront.net (CloudFront)
x-amz-cf-pop
TXL52-C1
access-control-max-age
86400
access-control-allow-methods
OPTIONS,GET,POST
content-type
application/json
access-control-allow-origin
*
x-cache
Miss from cloudfront
x-amzn-waf-challenge-id
Root=1-6578bec4-2262dd5a3e05476371decc31
cache-control
no-cache, no-store, must-revalidate
content-length
884
x-amz-cf-id
cHzMjJpigby72G5IUdYhyqB5jMBiP8vPQbUbmviY6kHVQ6AMolqRzg==
expires
0
telemetry
06f9095e3c8c.42c8209d.us-east-1.token.awswaf.com/06f9095e3c8c/e4291fc6cae7/1d3ec37e5ef3/
972 B
1 KB
Fetch
General
Full URL
https://06f9095e3c8c.42c8209d.us-east-1.token.awswaf.com/06f9095e3c8c/e4291fc6cae7/1d3ec37e5ef3/telemetry
Requested by
Host: 06f9095e3c8c.42c8209d.us-east-1.token.awswaf.com
URL: https://06f9095e3c8c.42c8209d.us-east-1.token.awswaf.com/06f9095e3c8c/e4291fc6cae7/1d3ec37e5ef3/challenge.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
99.84.146.39 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
server-99-84-146-39.txl52.r.cloudfront.net
Software
/
Resource Hash

Request headers

Referer
http://www.housing.wisc.edu/
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/120.0.6099.71 Safari/537.36
Content-Type
text/plain;charset=UTF-8

Response headers

pragma
no-cache
date
Tue, 12 Dec 2023 20:12:52 GMT
via
1.1 9e9671d1669bd7a6c194fae423e5778c.cloudfront.net (CloudFront)
x-amz-cf-pop
TXL52-C1
access-control-max-age
86400
access-control-allow-methods
OPTIONS,GET,POST
content-type
application/json
access-control-allow-origin
*
x-cache
Miss from cloudfront
x-amzn-waf-challenge-id
Root=1-6578bec4-3ec50efc46860ac92d1b6842
cache-control
no-cache, no-store, must-revalidate
content-length
972
x-amz-cf-id
FdwIN2MHFOiBMP1IGK0wKzO6MNRcx2L6Bor6j8aAAamxRWIJjFut9g==
expires
0
redhat-display-latin.v14.woff2
www.housing.wisc.edu/wp-content/themes/uw-theme/dist/fonts/uw-rh/
0
0

redhat-text-latin.v13.woff2
www.housing.wisc.edu/wp-content/themes/uw-theme/dist/fonts/uw-rh/
0
0

js
www.googletagmanager.com/gtag/
0
0

main.min.css
d9mfr5qxp4i37.cloudfront.net/wp-content/themes/uw-theme/dist/
0
0

2017-08-30-bucky-lakeshore-move-in-5.jpg
d9mfr5qxp4i37.cloudfront.net/wp-content/uploads/sites/132/2017/03/
0
0

2014-09-17-slichter-adams-carsons-1.jpg
d9mfr5qxp4i37.cloudfront.net/wp-content/uploads/sites/132/2017/03/
0
0

2013-10-12-campus-aerials-fall-14-e1509560842985-1600x500.jpg
d9mfr5qxp4i37.cloudfront.net/wp-content/uploads/sites/132/2017/08/
0
0

dining-locations-banner-updated-copy.jpg
d9mfr5qxp4i37.cloudfront.net/wp-content/uploads/sites/132/2020/10/
0
0

2016-10-13-campus-aerial-70.jpg
d9mfr5qxp4i37.cloudfront.net/wp-content/uploads/sites/132/2017/08/
0
0

Untitled-design-1.png
d9mfr5qxp4i37.cloudfront.net/wp-content/uploads/sites/132/2023/02/
0
0

widgets.js
platform.twitter.com/
0
0

uw-events.css
d9mfr5qxp4i37.cloudfront.net/wp-content/plugins/uw-events/styles/
0
0

jquery.min.js
d9mfr5qxp4i37.cloudfront.net/wp-content/themes/uw-theme/dist/js/jquery/
0
0

main.min.js
d9mfr5qxp4i37.cloudfront.net/wp-content/themes/uw-theme/dist/
0
0

jquery-migrate.min.js
d9mfr5qxp4i37.cloudfront.net/wp-content/themes/uw-theme/dist/js/jquery-migrate/
0
0

uwcookieconsent.min.js
cdn.wisc.cloud/cookie-consent/1.1.0/
0
0

slick.min.js
d9mfr5qxp4i37.cloudfront.net/wp-content/themes/uw-theme/dist/vendor/
0
0

Failed requests

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

Domain
www.housing.wisc.edu
URL
https://www.housing.wisc.edu/wp-content/themes/uw-theme/dist/fonts/uw-rh/redhat-display-latin.v14.woff2
Domain
www.housing.wisc.edu
URL
https://www.housing.wisc.edu/wp-content/themes/uw-theme/dist/fonts/uw-rh/redhat-text-latin.v13.woff2
Domain
www.googletagmanager.com
URL
https://www.googletagmanager.com/gtag/js?id=G-8N0WSPV9ZS
Domain
d9mfr5qxp4i37.cloudfront.net
URL
https://d9mfr5qxp4i37.cloudfront.net/wp-content/themes/uw-theme/dist/main.min.css?ver=1.28.0
Domain
d9mfr5qxp4i37.cloudfront.net
URL
https://d9mfr5qxp4i37.cloudfront.net/wp-content/uploads/sites/132/2017/03/2017-08-30-bucky-lakeshore-move-in-5.jpg
Domain
d9mfr5qxp4i37.cloudfront.net
URL
https://d9mfr5qxp4i37.cloudfront.net/wp-content/uploads/sites/132/2017/03/2014-09-17-slichter-adams-carsons-1.jpg
Domain
d9mfr5qxp4i37.cloudfront.net
URL
https://d9mfr5qxp4i37.cloudfront.net/wp-content/uploads/sites/132/2017/08/2013-10-12-campus-aerials-fall-14-e1509560842985-1600x500.jpg
Domain
d9mfr5qxp4i37.cloudfront.net
URL
https://d9mfr5qxp4i37.cloudfront.net/wp-content/uploads/sites/132/2020/10/dining-locations-banner-updated-copy.jpg
Domain
d9mfr5qxp4i37.cloudfront.net
URL
https://d9mfr5qxp4i37.cloudfront.net/wp-content/uploads/sites/132/2017/08/2016-10-13-campus-aerial-70.jpg
Domain
d9mfr5qxp4i37.cloudfront.net
URL
https://d9mfr5qxp4i37.cloudfront.net/wp-content/uploads/sites/132/2023/02/Untitled-design-1.png
Domain
platform.twitter.com
URL
https://platform.twitter.com/widgets.js
Domain
d9mfr5qxp4i37.cloudfront.net
URL
https://d9mfr5qxp4i37.cloudfront.net/wp-content/plugins/uw-events/styles/uw-events.css?ver=1.0.24
Domain
d9mfr5qxp4i37.cloudfront.net
URL
https://d9mfr5qxp4i37.cloudfront.net/wp-content/themes/uw-theme/dist/js/jquery/jquery.min.js?ver=3.6.0
Domain
d9mfr5qxp4i37.cloudfront.net
URL
https://d9mfr5qxp4i37.cloudfront.net/wp-content/themes/uw-theme/dist/main.min.js?ver=1.28.0
Domain
d9mfr5qxp4i37.cloudfront.net
URL
https://d9mfr5qxp4i37.cloudfront.net/wp-content/themes/uw-theme/dist/js/jquery-migrate/jquery-migrate.min.js?ver=3.4.0
Domain
cdn.wisc.cloud
URL
https://cdn.wisc.cloud/cookie-consent/1.1.0/uwcookieconsent.min.js?ver=1.1.0
Domain
d9mfr5qxp4i37.cloudfront.net
URL
https://d9mfr5qxp4i37.cloudfront.net/wp-content/themes/uw-theme/dist/vendor/slick.min.js?ver=1.6.0

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1 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| documentPictureInPicture

1 Cookies

Domain/Path Name / Value
.www.housing.wisc.edu/ Name: aws-waf-token
Value: 4cda674a-a0fe-4e9c-8568-6d3697c211de:EQoAarGMskweAAAA:p9Z3Wb1Vgvov0d+20QjDeCtpQ6NlPdMhsNzFW3BY3jkV07SRqNhYHithqVMirOOBt2HOkoycjHFHL0aa2hr6Q+0m0I0OZIgW+7+OEABEGPZ+3hRdHnLoiSwppDEBRA3Pjs1zsHTBSnLQGLrdyBwCEdLH6qc8dqZvkGo523wShGIiW6a+Oz/eaQsAhGNsjjoT1Soxzc9obt7VUzYpyMNv4AhRb+0d1MuNig6IMUeVPFci09hwB0o3ww9WD5UXPwSs6qFEs1uuQY7mjY5jYEW8oZllJQ5AvSU=

1 Console Messages

Source Level URL
Text
rendering error
Message:
Failed to set referrer policy: The value '' is not one of 'no-referrer', 'no-referrer-when-downgrade', 'origin', 'origin-when-cross-origin', 'same-origin', 'strict-origin', 'strict-origin-when-cross-origin', or 'unsafe-url'. The referrer policy has been left unchanged.