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172.67.69.3  Public Scan

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URL: https://doi.org/10.1021/acs.energyfuels.1c04272.
Submission: On December 26 via api from HK — Scanned from DE
 Behaviour Indicators
Similar DOM Content API
Verdicts

Summary

This website contacted 6 IPs in 2 countries across 5 domains to perform 14 HTTP transactions. The main IP is 172.67.69.3, located in United States and belongs to CLOUDFLARENET, US. The main domain is doi.org. The Cisco Umbrella rank of the primary domain is 30122.
TLS certificate: Issued by WE1 on December 4th 2024. Valid for: 3 months.
This is the only time doi.org was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
6 172.67.69.3 13335 (CLOUDFLAR...)
2 2606:4700::68... 13335 (CLOUDFLAR...)
1 2606:4700:440... 13335 (CLOUDFLAR...)
1 2a00:1450:400... 15169 (GOOGLE)
3 2a02:26f0:780... 20940 (AKAMAI-AS...)
1 2a02:26f0:350... 20940 (AKAMAI-AS...)
14 6
6    172.67.69.3 (United States)

ASN13335 (CLOUDFLARENET, US)
doi.org
2    2606:4700::6812:ba1f (United States)

ASN13335 (CLOUDFLARENET, US)
cdn.jsdelivr.net
1    2606:4700:4400::6812:2844 (United States)

ASN13335 (CLOUDFLARENET, US)
kit.fontawesome.com
1    2a00:1450:4001:827::200a (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)
fonts.googleapis.com
3    2a02:26f0:780::210:a45b (Frankfurt am Main, Germany)

ASN20940 (AKAMAI-ASN1 Akamai International B.V., NL)
use.typekit.net
1    2a02:26f0:3500:16::215:1491 (Frankfurt am Main, Germany)

ASN20940 (AKAMAI-ASN1 Akamai International B.V., NL)
p.typekit.net
Apex Domain
Subdomains		 Transfer
6 doi.org
doi.org — Cisco Umbrella Rank: 30122
21 KB
4 typekit.net
use.typekit.net — Cisco Umbrella Rank: 460
p.typekit.net — Cisco Umbrella Rank: 571
91 KB
2 jsdelivr.net
cdn.jsdelivr.net — Cisco Umbrella Rank: 318
42 KB
1 googleapis.com
fonts.googleapis.com — Cisco Umbrella Rank: 29
1 KB
1 fontawesome.com
kit.fontawesome.com — Cisco Umbrella Rank: 2020
14 5
Domain Requested by
6 doi.org doi.org
3 use.typekit.net doi.org
use.typekit.net
2 cdn.jsdelivr.net doi.org
1 p.typekit.net use.typekit.net
1 fonts.googleapis.com doi.org
1 kit.fontawesome.com doi.org
14 6

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

Domain
www.doi.org
creativecommons.org
twitter.com
www.linkedin.com
Subject Issuer Validity Valid
doi.org
WE1		 2024-12-04 -
2025-03-04		 3 months crt.sh
*.jsdelivr.net
Sectigo RSA Domain Validation Secure Server CA		 2024-05-04 -
2025-05-04		 a year crt.sh
*.fontawesome.com
DigiCert Global G2 TLS RSA SHA256 2020 CA1		 2024-07-30 -
2025-01-27		 6 months crt.sh
upload.video.google.com
WR2		 2024-12-02 -
2025-02-24		 3 months crt.sh
use.typekit.net
DigiCert Global G2 TLS RSA SHA256 2020 CA1		 2024-12-10 -
2026-01-10		 a year crt.sh

This page contains 1 frames:

Primary Page: https://doi.org/10.1021/acs.energyfuels.1c04272.
Frame ID: 44A40E854229F38D370B0A3490487827
Requests: 14 HTTP requests in this frame

Screenshot
Live screenshot
Full Image

Page Title

Error: DOI Not Found

Detected technologies

Overall confidence: 100%
Detected patterns
  • <link[^>]* href=[^>]*?bootstrap(?:[^>]*?([0-9a-fA-F]{7,40}|[\d]+(?:.[\d]+(?:.[\d]+)?)?)|)[^>]*?(?:\.min)?\.css
  • bootstrap(?:[^>]*?([0-9a-fA-F]{7,40}|[\d]+(?:.[\d]+(?:.[\d]+)?)?)|)[^>]*?(?:\.min)?\.js
Overall confidence: 100%
Detected patterns
  • (?:F|f)o(?:n|r)t-?(?:A|a)wesome(?:.*?([0-9a-fA-F]{7,40}|[\d]+(?:.[\d]+(?:.[\d]+)?)?)|)
  • kit\.fontawesome\.com/([0-9a-z]+).js
Overall confidence: 100%
Detected patterns
  • <link [^>]*?href="?[a-zA-Z]*?:?//cdn\.jsdelivr\.net/
  • //cdn\.jsdelivr\.net/

Page Statistics

14
Requests

100 %
HTTPS

83 %
IPv6

5
Domains

6
Subdomains

6
IPs

2
Countries

155 kB
Transfer

396 kB
Size

0
Cookies

Redirected requests

There were HTTP redirect chains for the following requests:

14 HTTP transactions

Resource
Path		 Size
x-fer		 Type
MIME-Type
Primary Request acs.energyfuels.1c04272.
doi.org/10.1021/ 		10 KB
4 KB 		Document
General
Check archive.org
Download Go to
Full URL
https://doi.org/10.1021/acs.energyfuels.1c04272.
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
172.67.69.3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
9e41abfdf9afe6da883cc03323e58eb601005998f5af503de8ca2c9e6abd4096
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload

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

alt-svc
h3=":443"; ma=86400
cf-cache-status
DYNAMIC
cf-ray
8f7f8b497c9b4d2e-FRA
content-encoding
gzip
content-type
text/html;charset=utf-8
date
Thu, 26 Dec 2024 08:01:38 GMT
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
priority
u=0,i
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=9YMRAZR8U3p8C%2FVBRNXGVZXvxwyb5dKeW28Fzn7qJMTcqb4nrkS0Vmjh8WNmp%2BO3ygFEE3ngapAfHxdk3XYXkJXYZQu4x63ncVWFOUkMRvnCxvMwr%2BjJHgs%3D"}],"group":"cf-nel","max_age":604800}
server
cloudflare
server-timing
cfL4;desc="?proto=QUIC&rtt=6755&min_rtt=6420&rtt_var=1304&sent=11&recv=10&lost=0&retrans=0&sent_bytes=4202&recv_bytes=4502&delivery_rate=882&cwnd=12000&unsent_bytes=0&cid=24a282165f07f400&ts=195&x=1" cfExtPri cfHdrFlush;dur=0
strict-transport-security
max-age=31536000; includeSubDomains; preload
vary
Origin
bootstrap.min.css
cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/ 		152 KB
20 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css
Requested by
Host: doi.org
URL: https://doi.org/10.1021/acs.energyfuels.1c04272.
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6812:ba1f , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
7633b7c0c97d19e682feee8afa2738523fcb2a14544a550572caeecd2eefe66b
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload
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
Origin
https://doi.org
Referer
https://doi.org/

Response headers

access-control-expose-headers
*
content-encoding
br
cf-cache-status
HIT
etag
W/"260c5-fByeBXPlzqi603M74vxjqoxo6o0"
age
1993455
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=dPoVRQTSumbebHbiMvk29rr5loJLnmXDsnMUOEbiPV6N5MhGTnUhV48IF%2FOVD0TP5NfxUD3vqVW6srkGGVGWqfn43lCTxQcZUutUsLVrCqFrU06inKR572TX7Shith7SkA9f3%2F%2FBhF5P8NHJHqg%3D"}],"group":"cf-nel","max_age":604800}
x-content-type-options
nosniff
x-jsd-version-type
version
alt-svc
h3=":443"; ma=86400
x-cache
HIT, HIT
date
Thu, 26 Dec 2024 08:01:39 GMT
content-type
text/css; charset=utf-8
x-served-by
cache-fra-eddf8230097-FRA, cache-lga21947-LGA
vary
Accept-Encoding
strict-transport-security
max-age=31536000; includeSubDomains; preload
cache-control
public, max-age=31536000, s-maxage=31536000, immutable
timing-allow-origin
*
nel
{"success_fraction":0.01,"report_to":"cf-nel","max_age":604800}
cross-origin-resource-policy
cross-origin
cf-ray
8f7f8b4aebb939c4-FRA
accept-ranges
bytes
access-control-allow-origin
*
content-length
20016
server
cloudflare
x-jsd-version
5.0.2
bootstrap.bundle.min.js
cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/ 		77 KB
22 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js
Requested by
Host: doi.org
URL: https://doi.org/10.1021/acs.energyfuels.1c04272.
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700::6812:ba1f , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
7e1f1503df765cca5e099891b94e318a2ef95081ba2af1eb6d417cc884bfdbfe
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload
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
Origin
https://doi.org
Referer
https://doi.org/

Response headers

access-control-expose-headers
*
content-encoding
br
cf-cache-status
HIT
etag
W/"13397-kBFpUnUH/55mLPZNjjYfNZMIlw0"
age
109461
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=CQ4VsaHurgDF5J3D2Y6I3Bxm%2B6FK%2BCxBVgrCkg8wY74ihIRN1DaMWkAHU%2FxMnw3oD6kDMlGAb%2FEHUW47B1VaguVgH5SNbczISrU26jl0%2Bb8Okf1lwfWCmZQkkFlLdjRCCryyppBMvgefII6KsaY%3D"}],"group":"cf-nel","max_age":604800}
x-content-type-options
nosniff
x-jsd-version-type
version
alt-svc
h3=":443"; ma=86400
x-cache
HIT, HIT
date
Thu, 26 Dec 2024 08:01:39 GMT
content-type
application/javascript; charset=utf-8
x-served-by
cache-fra-eddf8230080-FRA, cache-lga21939-LGA
vary
Accept-Encoding
strict-transport-security
max-age=31536000; includeSubDomains; preload
cache-control
public, max-age=31536000, s-maxage=31536000, immutable
timing-allow-origin
*
nel
{"success_fraction":0.01,"report_to":"cf-nel","max_age":604800}
cross-origin-resource-policy
cross-origin
cf-ray
8f7f8b4aebba39c4-FRA
accept-ranges
bytes
access-control-allow-origin
*
content-length
21528
server
cloudflare
x-jsd-version
5.0.2
731b8140c4.js
kit.fontawesome.com/ 		0
0 		Script
General
Check archive.org
Download Go to
Full URL
https://kit.fontawesome.com/731b8140c4.js
Requested by
Host: doi.org
URL: https://doi.org/10.1021/acs.energyfuels.1c04272.
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2606:4700:4400::6812:2844 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash

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://doi.org
Referer
https://doi.org/

Response headers

access-control-max-age
3000
x-request-id
GBSrS_CGtyJxEndwuVkh
cache-control
max-age=0, private, must-revalidate
cf-cache-status
MISS
access-control-allow-methods
GET, OPTIONS
cf-ray
8f7f8b4aeb0e6add-FRA
access-control-allow-origin
*
content-length
9
date
Thu, 26 Dec 2024 08:01:39 GMT
vary
Accept-Encoding
server
cloudflare
access-control-allow-headers
accept, accept-langauge, content-language, content-type, fa-kit-token
style.css
doi.org/static/css/ 		41 KB
8 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://doi.org/static/css/style.css
Requested by
Host: doi.org
URL: https://doi.org/10.1021/acs.energyfuels.1c04272.
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
172.67.69.3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
68e7556827b63417f5066eac7fe8bbdfca6cf32b978da8354de046c37e4753e4
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload

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://doi.org/10.1021/acs.energyfuels.1c04272.

Response headers

content-encoding
gzip
cf-cache-status
HIT
etag
W/"42098-1724428278000"
age
13450
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=xqzL7fud4ng9KwNJutUZPxXNqmeIl8dLg8tKvRnC02EmDeoKlXZB23Ru5PJbn5c8Q3i0qEVy%2B7fTX2Jqo7rmSa3JfUzxouEIFwGpklovpBuQMzW3q%2FYFxLc%3D"}],"group":"cf-nel","max_age":604800}
alt-svc
h3=":443"; ma=86400
server-timing
cfL4;desc="?proto=QUIC&rtt=6908&min_rtt=6420&rtt_var=1020&sent=16&recv=15&lost=0&retrans=0&sent_bytes=8102&recv_bytes=5651&delivery_rate=547970&cwnd=12000&unsent_bytes=0&cid=24a282165f07f400&ts=223&x=1", cfExtPri, cfHdrFlush;dur=0
date
Thu, 26 Dec 2024 08:01:39 GMT
content-type
text/css
vary
Origin, Accept-Encoding
last-modified
Fri, 23 Aug 2024 15:51:18 GMT
priority
u=0,i=?0
strict-transport-security
max-age=31536000; includeSubDomains; preload
cache-control
max-age=14400
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
cf-ray
8f7f8b4abd884d2e-FRA
permissions-policy
interest-cohort=(),browsing-topics=()
server
cloudflare
css2
fonts.googleapis.com/ 		5 KB
1 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://fonts.googleapis.com/css2?family=Roboto+Mono&family=Roboto:wght@100&display=swap
Requested by
Host: doi.org
URL: https://doi.org/10.1021/acs.energyfuels.1c04272.
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:827::200a Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software
ESF /
Resource Hash
8878fc867befbb96962bb468fbe25bd56827b6d77743dd66d4e4579bd6e85a14
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/131.0.0.0 Safari/537.36
Referer
https://doi.org/

Response headers

content-encoding
gzip
x-content-type-options
nosniff
expires
Thu, 26 Dec 2024 08:01:39 GMT
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
date
Thu, 26 Dec 2024 08:01:39 GMT
content-type
text/css; charset=utf-8
vary
Sec-Fetch-Dest, Sec-Fetch-Mode, Sec-Fetch-Site
last-modified
Thu, 26 Dec 2024 08:01:39 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
header_logo_cropped.svg
doi.org/static/images/logos/ 		8 KB
3 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://doi.org/static/images/logos/header_logo_cropped.svg
Requested by
Host: doi.org
URL: https://doi.org/10.1021/acs.energyfuels.1c04272.
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
172.67.69.3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
9fc95263e0bf9961044b4cb81e3e218dd259e4755e2d4dd8da5f1b877486de41
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload

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://doi.org/10.1021/acs.energyfuels.1c04272.

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"8182-1724428278000"
age
7714
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=uPlKDeLAOGogtN8B%2F2VavE0MHw25lWFamKql8PV9ReTPh%2FuWcT1Iai8GtDfL5dzoRL6m0RGvTCE%2F6syY9kQ61BcxrSzgxmSOAsG8fbWTDct7Tly1dd3rSO8%3D"}],"group":"cf-nel","max_age":604800}
alt-svc
h3=":443"; ma=86400
server-timing
cfL4;desc="?proto=QUIC&rtt=6878&min_rtt=6420&rtt_var=510&sent=25&recv=18&lost=0&retrans=0&sent_bytes=17864&recv_bytes=5780&delivery_rate=438174&cwnd=12000&unsent_bytes=0&cid=24a282165f07f400&ts=231&x=1", cfExtPri, cfHdrFlush;dur=0
date
Thu, 26 Dec 2024 08:01:39 GMT
content-type
image/svg+xml
vary
Origin, Accept-Encoding
last-modified
Fri, 23 Aug 2024 15:51:18 GMT
priority
u=2,i
strict-transport-security
max-age=31536000; includeSubDomains; preload
cache-control
max-age=14400
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
cf-ray
8f7f8b4abd8a4d2e-FRA
permissions-policy
interest-cohort=(),browsing-topics=()
server
cloudflare
exclamation.svg
doi.org/static/images/ 		2 KB
1 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://doi.org/static/images/exclamation.svg
Requested by
Host: doi.org
URL: https://doi.org/10.1021/acs.energyfuels.1c04272.
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
172.67.69.3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
03dd812f51c2ca958e969981f83d61cdfe32dce2c79f9193569cb560cf842a2d
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload

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://doi.org/10.1021/acs.energyfuels.1c04272.

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"1661-1724428278000"
age
9159
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=Elvn%2B4cWiTccKwOLG5NKy8XXTEbdxXRZuRpEH0443v%2BbHthzxYCVZsT2yWyM91R9yWb3wqI88K0%2FVDASoqbMiKMWl5OdbShKfJks8GMOTMJwyoKUlDaaqzI%3D"}],"group":"cf-nel","max_age":604800}
alt-svc
h3=":443"; ma=86400
server-timing
cfL4;desc="?proto=QUIC&rtt=6908&min_rtt=6420&rtt_var=1020&sent=23&recv=15&lost=0&retrans=0&sent_bytes=16333&recv_bytes=5651&delivery_rate=547970&cwnd=12000&unsent_bytes=0&cid=24a282165f07f400&ts=226&x=1", cfExtPri, cfHdrFlush;dur=0
date
Thu, 26 Dec 2024 08:01:39 GMT
content-type
image/svg+xml
vary
Origin, Accept-Encoding
last-modified
Fri, 23 Aug 2024 15:51:18 GMT
priority
u=2,i
strict-transport-security
max-age=31536000; includeSubDomains; preload
cache-control
max-age=14400
nel
{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
cf-ray
8f7f8b4abd8c4d2e-FRA
permissions-policy
interest-cohort=(),browsing-topics=()
server
cloudflare
footer_logo_cropped.svg
doi.org/static/images/logos/ 		8 KB
3 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://doi.org/static/images/logos/footer_logo_cropped.svg
Requested by
Host: doi.org
URL: https://doi.org/10.1021/acs.energyfuels.1c04272.
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
172.67.69.3 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Verdicts & Comments Add Verdict or Comment

5 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.

number| uidEvent object| bootstrap function| submitDoiNotFound function| validateEmail function| validateDoi

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2 Console Messages

Source Level URL
Text
network error URL: https://doi.org/10.1021/acs.energyfuels.1c04272.
Message:
Failed to load resource: the server responded with a status of 404 ()
network error URL: https://kit.fontawesome.com/731b8140c4.js
Message:
Failed to load resource: the server responded with a status of 403 ()

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=31536000; includeSubDomains; preload