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www.preface.ai Open in urlscan Pro
76.76.21.9  Public Scan

Go To Rescan Add Verdict Report
Submitted URL: http://www.preface.ai/
Effective URL: https://www.preface.ai/
Submission: On February 02 via manual from MO — Scanned from SG
 Behaviour Indicators
Similar DOM Content API
Verdicts

Summary

This website contacted 26 IPs in 4 countries across 19 domains to perform 129 HTTP transactions. The main IP is 76.76.21.9, located in Walnut, United States and belongs to AMAZON-02, US. The main domain is www.preface.ai.
TLS certificate: Issued by R3 on December 11th 2023. Valid for: 3 months.
This is the only time www.preface.ai was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
1 69 76.76.21.9 16509 (AMAZON-02)
15 2606:4700::68... 13335 (CLOUDFLAR...)
1 2606:4700::68... 13335 (CLOUDFLAR...)
3 13.227.254.56 16509 (AMAZON-02)
1 2600:9000:200... 16509 (AMAZON-02)
3 2620:1ec:bdf::59 8075 (MICROSOFT...)
2 2404:6800:400... 15169 (GOOGLE)
1 104.69.173.62 16625 (AKAMAI-AS)
4 2606:4700:303... 13335 (CLOUDFLAR...)
2 99.81.35.156 16509 (AMAZON-02)
4 2001:4860:480... 15169 (GOOGLE)
1 2404:6800:400... 15169 (GOOGLE)
1 2600:1413:1::... 20940 (AKAMAI-ASN1)
2 2a03:2880:f00... 32934 (FACEBOOK)
1 2001:4860:480... 15169 (GOOGLE)
2 2404:6800:400... 15169 (GOOGLE)
3 2404:6800:400... 15169 (GOOGLE)
2 2404:6800:400... 15169 (GOOGLE)
4 5 2620:1ec:21::14 8068 (MICROSOFT...)
1 13.107.42.14 8068 (MICROSOFT...)
3 52.152.143.207 8075 (MICROSOFT...)
1 2a03:2880:f10... 32934 (FACEBOOK)
1 2 20.205.115.81 8075 (MICROSOFT...)
1 1 2620:1ec:c11:... 8068 (MICROSOFT...)
3 54.186.23.98 16509 (AMAZON-02)
2 2600:9000:21b... 16509 (AMAZON-02)
1 34.215.148.109 16509 (AMAZON-02)
129 26
69    76.76.21.9 (Walnut, United States)

ASN16509 (AMAZON-02, US)
www.preface.ai
15    2606:4700::6813:a641 (United States)

ASN13335 (CLOUDFLARENET, US)
res.cloudinary.com
1    2606:4700::6811:180e (United States)

ASN13335 (CLOUDFLARENET, US)
cdnjs.cloudflare.com
3    13.227.254.56 (United States)

ASN16509 (AMAZON-02, US)
PTR: server-13-227-254-56.sin52.r.cloudfront.net
js.stripe.com
1    2600:9000:2003:8800:5:c5de:df80:93a1 (United States)

ASN16509 (AMAZON-02, US)
chat.sleekflow.io
3    2620:1ec:bdf::59 (United States)

ASN8075 (MICROSOFT-CORP-MSN-AS-BLOCK, US)
www.clarity.ms
2    2404:6800:4003:c1c::61 (Singapore, Singapore)

ASN15169 (GOOGLE, US)
www.googletagmanager.com
1    104.69.173.62 (Singapore, Singapore)

ASN16625 (AKAMAI-AS, US)
PTR: a104-69-173-62.deploy.static.akamaitechnologies.com
chimpstatic.com
4    2606:4700:3034::6815:40ca (United States)

ASN13335 (CLOUDFLARENET, US)
portal.preface.ai
2    99.81.35.156 (Dublin, Ireland)

ASN16509 (AMAZON-02, US)
PTR: ec2-99-81-35-156.eu-west-1.compute.amazonaws.com
vitals.vercel-insights.com
4    2001:4860:4802:32::178 (United States)

ASN15169 (GOOGLE, US)
www.google-analytics.com
1    2404:6800:4003:c1c::9a (Singapore, Singapore)

ASN15169 (GOOGLE, US)
googleads.g.doubleclick.net
1    2600:1413:1::17d3:8ca9 (Singapore, Singapore)

ASN20940 (AKAMAI-ASN1, NL)
snap.licdn.com
2    2a03:2880:f00c:212:face:b00c:0:3 (Singapore, Singapore)

ASN32934 (FACEBOOK, US)
connect.facebook.net
1    2001:4860:4802:36::181 (United States)

ASN15169 (GOOGLE, US)
analytics.google.com
2    2404:6800:4003:c01::9b (Singapore, Singapore)

ASN15169 (GOOGLE, US)
stats.g.doubleclick.net
3    2404:6800:4003:c1a::5e (Singapore, Singapore)

ASN15169 (GOOGLE, US)
www.google.com.sg
2    2404:6800:4003:c01::68 (Singapore, Singapore)

ASN15169 (GOOGLE, US)
www.google.com
5    2620:1ec:21::14 (United States)

ASN8068 (MICROSOFT-CORP-MSN-AS-BLOCK, US)
px.ads.linkedin.com
www.linkedin.com
1    13.107.42.14 (United States)

ASN8068 (MICROSOFT-CORP-MSN-AS-BLOCK, US)
px4.ads.linkedin.com
3    52.152.143.207 (Washington, United States)

ASN8075 (MICROSOFT-CORP-MSN-AS-BLOCK, US)
o.clarity.ms
1    2a03:2880:f10c:283:face:b00c:0:25de (Singapore, Singapore)

ASN32934 (FACEBOOK, US)
www.facebook.com
2    20.205.115.81 (Hong Kong, Hong Kong)

ASN8075 (MICROSOFT-CORP-MSN-AS-BLOCK, US)
c.clarity.ms
1    2620:1ec:c11::200 (United States)

ASN8068 (MICROSOFT-CORP-MSN-AS-BLOCK, US)
c.bing.com
3    54.186.23.98 (Boardman, United States)

ASN16509 (AMAZON-02, US)
PTR: ip-54-186-23-98.stripe.com
q.stripe.com
2    2600:9000:21b4:f200:19:7d10:bd80:93a1 (United States)

ASN16509 (AMAZON-02, US)
m.stripe.network
1    34.215.148.109 (Boardman, United States)

ASN16509 (AMAZON-02, US)
PTR: ec2-34-215-148-109.us-west-2.compute.amazonaws.com
m.stripe.com
Apex Domain
Subdomains		 Transfer
73 preface.ai
www.preface.ai
portal.preface.ai
1 MB
15 cloudinary.com
res.cloudinary.com — Cisco Umbrella Rank: 2467
3 MB
8 clarity.ms
www.clarity.ms — Cisco Umbrella Rank: 747
o.clarity.ms — Cisco Umbrella Rank: 7121
c.clarity.ms — Cisco Umbrella Rank: 1351
30 KB
7 stripe.com
js.stripe.com — Cisco Umbrella Rank: 1227
q.stripe.com — Cisco Umbrella Rank: 7010
m.stripe.com — Cisco Umbrella Rank: 1188
150 KB
6 linkedin.com
px.ads.linkedin.com — Cisco Umbrella Rank: 349
www.linkedin.com — Cisco Umbrella Rank: 632
px4.ads.linkedin.com — Cisco Umbrella Rank: 6550
3 KB
4 google-analytics.com
www.google-analytics.com — Cisco Umbrella Rank: 27
21 KB
3 google.com.sg
www.google.com.sg — Cisco Umbrella Rank: 13364
625 B
3 google.com
analytics.google.com — Cisco Umbrella Rank: 154
www.google.com — Cisco Umbrella Rank: 2
806 B
3 doubleclick.net
googleads.g.doubleclick.net — Cisco Umbrella Rank: 38
stats.g.doubleclick.net — Cisco Umbrella Rank: 79
2 KB
2 stripe.network
m.stripe.network — Cisco Umbrella Rank: 1315
18 KB
2 facebook.net
connect.facebook.net — Cisco Umbrella Rank: 174
71 KB
2 vercel-insights.com
vitals.vercel-insights.com — Cisco Umbrella Rank: 11262
331 B
2 googletagmanager.com
www.googletagmanager.com — Cisco Umbrella Rank: 37
205 KB
1 bing.com
c.bing.com — Cisco Umbrella Rank: 247
765 B
1 facebook.com
www.facebook.com — Cisco Umbrella Rank: 107
185 B
1 licdn.com
snap.licdn.com — Cisco Umbrella Rank: 783
16 KB
1 chimpstatic.com
chimpstatic.com — Cisco Umbrella Rank: 6033
1 KB
1 sleekflow.io
chat.sleekflow.io — Cisco Umbrella Rank: 505205
2 KB
1 cloudflare.com
cdnjs.cloudflare.com — Cisco Umbrella Rank: 225
1007 B
129 19
Domain Requested by
69 www.preface.ai 1 redirects www.preface.ai
15 res.cloudinary.com www.preface.ai
4 px.ads.linkedin.com 3 redirects snap.licdn.com
4 www.google-analytics.com www.googletagmanager.com
www.google-analytics.com
www.preface.ai
4 portal.preface.ai www.preface.ai
3 q.stripe.com www.preface.ai
3 o.clarity.ms www.clarity.ms
3 www.google.com.sg www.preface.ai
3 www.clarity.ms www.preface.ai
www.clarity.ms
3 js.stripe.com www.preface.ai
js.stripe.com
2 m.stripe.network js.stripe.com
m.stripe.network
2 c.clarity.ms 1 redirects
2 www.google.com www.preface.ai
2 stats.g.doubleclick.net www.googletagmanager.com
www.google-analytics.com
2 connect.facebook.net www.preface.ai
connect.facebook.net
2 vitals.vercel-insights.com www.preface.ai
2 www.googletagmanager.com www.preface.ai
www.googletagmanager.com
1 m.stripe.com m.stripe.network
1 c.bing.com 1 redirects
1 www.facebook.com www.preface.ai
1 px4.ads.linkedin.com www.preface.ai
1 www.linkedin.com 1 redirects
1 analytics.google.com www.googletagmanager.com
1 snap.licdn.com www.googletagmanager.com
1 googleads.g.doubleclick.net www.googletagmanager.com
1 chimpstatic.com www.preface.ai
1 chat.sleekflow.io www.preface.ai
1 cdnjs.cloudflare.com www.preface.ai
129 28

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

Domain
app.preface.ai
calendly.com
wa.me
www.facebook.com
www.instagram.com
www.linkedin.com
Subject Issuer Validity Valid
www.preface.ai
R3		 2023-12-11 -
2024-03-10		 3 months crt.sh
*.cloudinary.com
Go Daddy Secure Certificate Authority - G2		 2023-12-14 -
2024-06-22		 6 months crt.sh
sni.cloudflaressl.com
Cloudflare Inc ECC CA-3		 2023-07-03 -
2024-07-02		 a year crt.sh
a.stripecdn.com
DigiCert SHA2 Extended Validation Server CA		 2024-01-02 -
2024-04-04		 3 months crt.sh
chat.sleekflow.io
Amazon RSA 2048 M02		 2023-07-07 -
2024-08-04		 a year crt.sh
www.clarity.ms
DigiCert TLS RSA SHA256 2020 CA1		 2023-12-07 -
2024-12-07		 a year crt.sh
*.google-analytics.com
GTS CA 1C3		 2024-01-09 -
2024-04-02		 3 months crt.sh
wildcardsan.us15.list-manage.com
DigiCert TLS RSA SHA256 2020 CA1		 2023-09-17 -
2024-09-17		 a year crt.sh
preface.ai
E1		 2023-12-21 -
2024-03-20		 3 months crt.sh
vercel-insights.com
Amazon RSA 2048 M03		 2023-08-23 -
2024-09-19		 a year crt.sh
*.g.doubleclick.net
GTS CA 1C3		 2024-01-09 -
2024-04-02		 3 months crt.sh
snap.licdn.com
DigiCert SHA2 Secure Server CA		 2023-12-13 -
2024-12-12		 a year crt.sh
*.facebook.com
DigiCert SHA2 High Assurance Server CA		 2023-11-11 -
2024-02-09		 3 months crt.sh
*.google.com
GTS CA 1C3		 2024-01-09 -
2024-04-02		 3 months crt.sh
*.google.com.sg
GTS CA 1C3		 2024-01-09 -
2024-04-02		 3 months crt.sh
www.google.com
GTS CA 1C3		 2024-01-09 -
2024-04-02		 3 months crt.sh
a.clarity.ms
Microsoft Azure TLS Issuing CA 01		 2024-01-14 -
2024-06-27		 5 months crt.sh
www.linkedin.com
DigiCert SHA2 Secure Server CA		 2024-01-30 -
2024-07-30		 6 months crt.sh
*.stripe.com
DigiCert TLS Hybrid ECC SHA384 2020 CA1		 2023-12-20 -
2024-03-21		 3 months crt.sh
m.stripe.com
DigiCert TLS RSA SHA256 2020 CA1		 2023-12-22 -
2024-03-21		 3 months crt.sh

This page contains 3 frames:

Primary Page: https://www.preface.ai/
Frame ID: 409C1A9AE686D31CE38CBD97E5AD01DD
Requests: 121 HTTP requests in this frame

Frame: https://js.stripe.com/v3/m-outer-3437aaddcdf6922d623e172c2d6f9278.html
Frame ID: 0796D5171E09712D668B899C177C449F
Requests: 4 HTTP requests in this frame

Frame: https://m.stripe.network/inner.html
Frame ID: C84C661B61BFBF2D0070DB22DF481787
Requests: 4 HTTP requests in this frame

Screenshot
Live screenshot
Full Image

Page Title

Redesign the notion of classroom | Preface | Preface

Page URL History Show full URLs

  1. http://www.preface.ai/ HTTP 308
    https://www.preface.ai/ Page URL

Detected technologies

Overall confidence: 100%
Detected patterns
  • js\.stripe\.com
Overall confidence: 100%
Detected patterns
  • //connect\.facebook\.([a-z]+)/[^/]*/[a-z]*\.js
Overall confidence: 100%
Detected patterns
  • google-analytics\.com/(?:ga|urchin|analytics)\.js
Overall confidence: 100%
Detected patterns
  • <link[^>]* href=[^>]+fonts\.(?:googleapis|google)\.com
Overall confidence: 100%
Detected patterns
  • googletagmanager\.com/gtm\.js
  • googletagmanager\.com/gtag/js
Overall confidence: 100%
Detected patterns
  • snap\.licdn\.com/li\.lms-analytics/insight\.min\.js
Overall confidence: 100%
Detected patterns
  • chimpstatic\.com/mcjs-connected

Page Statistics

129
Requests

98 %
HTTPS

67 %
IPv6

19
Domains

28
Subdomains

26
IPs

4
Countries

4335 kB
Transfer

7825 kB
Size

27
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.preface.ai/ HTTP 308
    https://www.preface.ai/ Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

Request Chain 91
  • https://px.ads.linkedin.com/collect?v=2&fmt=js&pid=797875&time=1706837944901&url=https%3A%2F%2Fwww.preface.ai%2F HTTP 302
  • https://px.ads.linkedin.com/collect?v=2&fmt=js&pid=797875&time=1706837944901&url=https%3A%2F%2Fwww.preface.ai%2F&cookiesTest=true HTTP 302
  • https://www.linkedin.com/px/li_sync?redirect=https%3A%2F%2Fpx.ads.linkedin.com%2Fcollect%3Fv%3D2%26fmt%3Djs%26pid%3D797875%26time%3D1706837944901%26url%3Dhttps%253A%252F%252Fwww.preface.ai%252F%26cookiesTest%3Dtrue%26liSync%3Dtrue HTTP 302
  • https://px.ads.linkedin.com/collect?v=2&fmt=js&pid=797875&time=1706837944901&url=https%3A%2F%2Fwww.preface.ai%2F&cookiesTest=true&liSync=true HTTP 302
  • https://px4.ads.linkedin.com/collect?v=2&fmt=js&pid=797875&time=1706837944901&url=https%3A%2F%2Fwww.preface.ai%2F&cookiesTest=true&liSync=true&e_ipv6=AQKE3ruZvERiXwAAAY1neC3J9oYTZb2qBbBr3PD2Sv-n6GupFn9S-D3u7ieeBqNBHT-Urn8fGH39
Request Chain 107
  • https://c.clarity.ms/c.gif HTTP 302
  • https://c.bing.com/c.gif?ctsa=mr&CtsSyncId=654E9A7367D14753B5893E1DF8E7350A&RedC=c.clarity.ms&MXFR=22BAA18E59606F861751B5975D60619E HTTP 302
  • https://c.clarity.ms/c.gif?ctsa=mr&CtsSyncId=654E9A7367D14753B5893E1DF8E7350A&MUID=3B79D27A989D669F09B7C663999C67F5

129 HTTP transactions

Resource
Path		 Size
x-fer		 Type
MIME-Type
Primary Request /
www.preface.ai/
Redirect Chain
  • http://www.preface.ai/
  • https://www.preface.ai/
225 KB
30 KB 		Document
General
Check archive.org
Download Go to
Full URL
https://www.preface.ai/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.9 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
8afdbff3cadc96d43dc6845b7bf8b57e808609323ffe2044c5175fed1085ad77
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.139 Safari/537.36
accept-language
zh-SG,zh;q=0.9

Response headers

access-control-allow-origin
*
age
59571
cache-control
public, max-age=0, must-revalidate
content-disposition
inline
content-encoding
br
content-type
text/html; charset=utf-8
date
Fri, 02 Feb 2024 01:39:03 GMT
etag
W/"91d4ec2755fb6f0883fcd1c06c80c0b5"
server
Vercel
strict-transport-security
max-age=63072000
x-matched-path
/
x-vercel-cache
HIT
x-vercel-id
sin1::c9frx-1706837943904-aa16a0fcf614

Redirect headers

Content-Type
text/plain
Location
https://www.preface.ai/
Refresh
0;url=https://www.preface.ai/
server
Vercel
/
www.preface.ai/_next/image/ 		11 KB
12 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://www.preface.ai/_next/image/?url=https%3A%2F%2Fres.cloudinary.com%2Fpreface%2Fimage%2Fupload%2Fw_1024%2Cc_limit%2Cf_auto%2Fv1633826301%2Fr2021%2F%2Fassets%2Fimages%2Fhome%2Fhero%2FLogo1.png&w=640&q=75
Requested by
Host: www.preface.ai
URL: https://www.preface.ai/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.9 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
b798239ea32f8b53be9f71100e4a37617bc2ed939003412d39fb96f899f26d13
Security Headers
Name Value
Content-Security-Policy script-src 'none'; frame-src 'none'; sandbox;
Strict-Transport-Security max-age=63072000

Request headers

accept-language
zh-SG,zh;q=0.9
Referer
https://www.preface.ai/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.139 Safari/537.36

Response headers

content-security-policy
script-src 'none'; frame-src 'none'; sandbox;
date
Sat, 13 Jan 2024 08:39:18 GMT
strict-transport-security
max-age=63072000
age
1702786
cross-origin-resource-policy
cross-origin
content-disposition
inline; filename="Logo1.webp"
content-length
11518
last-modified
Sat, 13 Jan 2024 08:39:18 GMT
server
Vercel
x-vercel-id
sin1::ttwnq-1706837943936-c263416c54d8
x-vercel-cache
HIT
vary
Accept
content-type
image/webp
access-control-allow-origin
*
cache-control
public, max-age=2592000, must-revalidate
accept-ranges
bytes
timing-allow-origin
*
3b10157bf98ed1ef.css
www.preface.ai/_next/static/css/ 		306 KB
46 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://www.preface.ai/_next/static/css/3b10157bf98ed1ef.css
Requested by
Host: www.preface.ai
URL: https://www.preface.ai/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.9 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
194586c210a3d259f1b3bd1c8185c8e7d2e0aab6999c66463f9cd25316ae640a
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

accept-language
zh-SG,zh;q=0.9
Referer
https://www.preface.ai/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.139 Safari/537.36

Response headers

date
Fri, 02 Feb 2024 01:39:03 GMT
content-encoding
br
strict-transport-security
max-age=63072000
server
Vercel
x-vercel-id
sin1::5t9wj-1706837943935-561825dc0080
age
59570
x-matched-path
/_next/static/css/3b10157bf98ed1ef.css
etag
W/"be34e6d648416bc4437c9cdac3d6cc95"
x-vercel-cache
HIT
content-type
text/css; charset=utf-8
access-control-allow-origin
*
cache-control
public,max-age=31536000,immutable
content-disposition
inline; filename="3b10157bf98ed1ef.css"
7b233cd83a8cff1c.css
www.preface.ai/_next/static/css/ 		22 KB
4 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://www.preface.ai/_next/static/css/7b233cd83a8cff1c.css
Requested by
Host: www.preface.ai
URL: https://www.preface.ai/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.9 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
7eda2d3f69cd76593b0e8888f4551b594b577bafd719d1580f5595681b14dfff
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

accept-language
zh-SG,zh;q=0.9
Referer
https://www.preface.ai/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.139 Safari/537.36

Response headers

date
Fri, 02 Feb 2024 01:39:03 GMT
content-encoding
br
strict-transport-security
max-age=63072000
server
Vercel
x-vercel-id
sin1::sftbz-1706837943935-cc96355a128a
age
59261
x-matched-path
/_next/static/css/7b233cd83a8cff1c.css
etag
W/"2dc1cced657a036f81629181da85b296"
x-vercel-cache
HIT
content-type
text/css; charset=utf-8
access-control-allow-origin
*
cache-control
public,max-age=31536000,immutable
content-disposition
inline; filename="7b233cd83a8cff1c.css"
5c4a7a941e10412f.css
www.preface.ai/_next/static/css/ 		779 B
949 B 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://www.preface.ai/_next/static/css/5c4a7a941e10412f.css
Requested by
Host: www.preface.ai
URL: https://www.preface.ai/
Protocol
H2
Security
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TLS 1.3, , AES_128_GCM
Server
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Software
cafe /
Resource Hash
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Name Value
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Request headers

accept-language
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User-Agent
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Response headers

pragma
no-cache
date
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x-content-type-options
nosniff
server
cafe
content-type
image/gif
p3p
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/
www.google.com/pagead/1p-user-list/853422368/ 		42 B
455 B 		Image
General
Check archive.org
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Full URL
https://www.google.com/pagead/1p-user-list/853422368/?random=1706837944699&cv=11&fst=1706835600000&bg=ffffff&guid=ON&async=1&gtm=45He41v0v810835184za200&u_w=1600&u_h=1200&url=https%3A%2F%2Fwww.preface.ai%2F&frm=0&tiba=Redesign%20the%20notion%20of%20classroom%20%7C%20Preface%20%7C%20Preface&npa=0&fmt=3&is_vtc=1&cid=CAQSGwAvHhf_-mn1wOiRAjym7vS5SZ49R4GGTkhCzQ&random=3056290592&rmt_tld=0&ipr=y
Requested by
Host: www.preface.ai
URL: https://www.preface.ai/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2404:6800:4003:c01::68 Singapore, Singapore, ASN15169 (GOOGLE, US),
Reverse DNS
Software
cafe /
Resource Hash
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Security Headers
Name Value
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Request headers

accept-language
zh-SG,zh;q=0.9
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https://www.preface.ai/
User-Agent
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Response headers

pragma
no-cache
date
Fri, 02 Feb 2024 01:39:04 GMT
content-security-policy
script-src 'none'; object-src 'none'
x-content-type-options
nosniff
server
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p3p
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cross-origin
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*
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x-xss-protection
0
expires
Fri, 01 Jan 1990 00:00:00 GMT
/
www.google.com.sg/pagead/1p-user-list/853422368/ 		42 B
154 B 		Image
General
Check archive.org
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Full URL
https://www.google.com.sg/pagead/1p-user-list/853422368/?random=1706837944699&cv=11&fst=1706835600000&bg=ffffff&guid=ON&async=1&gtm=45He41v0v810835184za200&u_w=1600&u_h=1200&url=https%3A%2F%2Fwww.preface.ai%2F&frm=0&tiba=Redesign%20the%20notion%20of%20classroom%20%7C%20Preface%20%7C%20Preface&npa=0&fmt=3&is_vtc=1&cid=CAQSGwAvHhf_-mn1wOiRAjym7vS5SZ49R4GGTkhCzQ&random=3056290592&rmt_tld=1&ipr=y
Requested by
Host: www.preface.ai
URL: https://www.preface.ai/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2404:6800:4003:c1a::5e Singapore, Singapore, ASN15169 (GOOGLE, US),
Reverse DNS
Software
cafe /
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Security Headers
Name Value
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Request headers

accept-language
zh-SG,zh;q=0.9
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https://www.preface.ai/
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Response headers

pragma
no-cache
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content-security-policy
script-src 'none'; object-src 'none'
x-content-type-options
nosniff
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expires
Fri, 01 Jan 1990 00:00:00 GMT
collect
px4.ads.linkedin.com/
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  • https://www.linkedin.com/px/li_sync?redirect=https%3A%2F%2Fpx.ads.linkedin.com%2Fcollect%3Fv%3D2%26fmt%3Djs%26pid%3D797875%26time%3D1706837944901%26url%3Dhttps%253A%252F%252Fwww.preface.ai%252F%26c...
  • https://px.ads.linkedin.com/collect?v=2&fmt=js&pid=797875&time=1706837944901&url=https%3A%2F%2Fwww.preface.ai%2F&cookiesTest=true&liSync=true
  • https://px4.ads.linkedin.com/collect?v=2&fmt=js&pid=797875&time=1706837944901&url=https%3A%2F%2Fwww.preface.ai%2F&cookiesTest=true&liSync=true&e_ipv6=AQKE3ruZvERiXwAAAY1neC3J9oYTZb2qBbBr3PD2Sv-n6Gu...
0
487 B 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://px4.ads.linkedin.com/collect?v=2&fmt=js&pid=797875&time=1706837944901&url=https%3A%2F%2Fwww.preface.ai%2F&cookiesTest=true&liSync=true&e_ipv6=AQKE3ruZvERiXwAAAY1neC3J9oYTZb2qBbBr3PD2Sv-n6GupFn9S-D3u7ieeBqNBHT-Urn8fGH39
Requested by
Host: www.preface.ai
URL: https://www.preface.ai/
Protocol
H2
Server
13.107.42.14 , United States, ASN8068 (MICROSOFT-CORP-MSN-AS-BLOCK, US),
Reverse DNS
Software
/
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Request headers

accept-language
zh-SG,zh;q=0.9
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User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.139 Safari/537.36

Response headers

date
Fri, 02 Feb 2024 01:39:05 GMT
x-li-pop
afd-prod-lva1-x
x-msedge-ref
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linkedin-action
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CONFIG_NOCACHE
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x-li-fabric
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x-li-proto
http/2
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Redirect headers

date
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x-li-pop
afd-prod-lva1-x
x-msedge-ref
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linkedin-action
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x-cache
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x-li-fabric
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x-li-proto
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collect
www.google-analytics.com/j/ 		4 B
208 B 		XHR
General
Check archive.org
Download Go to
Full URL
https://www.google-analytics.com/j/collect?v=1&_v=j101&a=1932541441&t=pageview&_s=1&dl=https%3A%2F%2Fwww.preface.ai%2F&ul=en-us&de=UTF-8&dt=Redesign%20the%20notion%20of%20classroom%20%7C%20Preface%20%7C%20Preface&sd=24-bit&sr=1600x1200&vp=1600x1200&je=0&_u=YADAAAABAAAAAC~&jid=1395748167&gjid=868920103&cid=1693460729.1706837945&tid=UA-132581314-1&_gid=220105773.1706837945&_r=1&_slc=1&gtm=45He41v0n81T5JTPW2v810835184za200&gcd=11l1l1l1l1&dma=0&z=76348208
Requested by
Host: www.google-analytics.com
URL: https://www.google-analytics.com/analytics.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
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2001:4860:4802:32::178 , United States, ASN15169 (GOOGLE, US),
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Resource Hash
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Security Headers
Name Value
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Referer
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accept-language
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User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.139 Safari/537.36
Content-Type
text/plain

Response headers

pragma
no-cache
date
Fri, 02 Feb 2024 01:39:04 GMT
x-content-type-options
nosniff
last-modified
Sun, 17 May 1998 03:00:00 GMT
server
Golfe2
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cache-control
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cross-origin
alt-svc
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content-length
4
expires
Fri, 01 Jan 1990 00:00:00 GMT
collect
www.google-analytics.com/ 		35 B
132 B 		Image
General
Check archive.org
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Full URL
https://www.google-analytics.com/collect?v=1&_v=j101&a=1932541441&t=event&ni=1&_s=2&dl=https%3A%2F%2Fwww.preface.ai%2F&ul=en-us&de=UTF-8&dt=Redesign%20the%20notion%20of%20classroom%20%7C%20Preface%20%7C%20Preface&sd=24-bit&sr=1600x1200&vp=1600x1200&je=0&ec=Clarity&ea=2lbn01&_u=YDDAAAABAAAAAC~&jid=&gjid=&cid=1693460729.1706837945&tid=UA-132581314-1&_gid=220105773.1706837945&gtm=45He41v0n81T5JTPW2v810835184za200&gcd=11l1l1l1l1&dma=0&cd1=https%3A%2F%2Fclarity.microsoft.com%2Fga%2Fh4pz6ij4l3%2F1qs9d7j%2F2lbn01&z=2146309898
Requested by
Host: www.preface.ai
URL: https://www.preface.ai/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2001:4860:4802:32::178 , United States, ASN15169 (GOOGLE, US),
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Software
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Name Value
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Request headers

accept-language
zh-SG,zh;q=0.9
Referer
https://www.preface.ai/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.139 Safari/537.36

Response headers

pragma
no-cache
date
Thu, 01 Feb 2024 20:45:27 GMT
x-content-type-options
nosniff
last-modified
Sun, 17 May 1998 03:00:00 GMT
server
Golfe2
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17617
content-type
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content-length
35
expires
Mon, 01 Jan 1990 00:00:00 GMT
362308901357720
connect.facebook.net/signals/config/ 		68 KB
14 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://connect.facebook.net/signals/config/362308901357720?v=2.9.144&r=stable&domain=www.preface.ai&hme=44ba03e7b4a66084f0064fdada9e7a7b89f6f2cf807a204d10c6509aeae35209&ex_m=62%2C105%2C93%2C97%2C53%2C3%2C88%2C61%2C14%2C86%2C79%2C44%2C46%2C148%2C151%2C162%2C158%2C159%2C161%2C25%2C89%2C45%2C68%2C160%2C143%2C146%2C155%2C156%2C163%2C114%2C13%2C43%2C167%2C166%2C116%2C16%2C29%2C32%2C1%2C36%2C57%2C58%2C59%2C63%2C83%2C15%2C12%2C85%2C82%2C81%2C94%2C96%2C31%2C95%2C26%2C22%2C144%2C147%2C123%2C24%2C9%2C10%2C11%2C5%2C6%2C21%2C19%2C20%2C49%2C54%2C56%2C66%2C90%2C23%2C67%2C8%2C7%2C71%2C41%2C18%2C91%2C17%2C4%2C73%2C80%2C72%2C78%2C40%2C39%2C77%2C33%2C35%2C76%2C48%2C74%2C28%2C37%2C65%2C0%2C84%2C75%2C2%2C30%2C55%2C34%2C92%2C38%2C70%2C60%2C98%2C52%2C51%2C27%2C87%2C50%2C47%2C42%2C69%2C64%2C99
Requested by
Host: connect.facebook.net
URL: https://connect.facebook.net/en_US/fbevents.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
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Reverse DNS
Software
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Security Headers
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Request headers

accept-language
zh-SG,zh;q=0.9
Referer
https://www.preface.ai/
User-Agent
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Response headers

permissions-policy-report-only
autoplay=(), clipboard-read=(), clipboard-write=(), display-capture=(), encrypted-media=(), fullscreen=(), picture-in-picture=(), xr-spatial-tracking=()
content-security-policy
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content-encoding
gzip
x-content-type-options
nosniff
strict-transport-security
max-age=31536000; preload; includeSubDomains
date
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document-policy
force-load-at-top
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cross-origin
alt-svc
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x-xss-protection
0
reporting-endpoints
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pragma
public
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vary
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content-type
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x-frame-options
DENY
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permissions-policy
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timing-allow-origin
*
expires
Sat, 01 Jan 2000 00:00:00 GMT
collect
stats.g.doubleclick.net/j/ 		8 B
155 B 		XHR
General
Check archive.org
Download Go to
Full URL
https://stats.g.doubleclick.net/j/collect?t=dc&aip=1&_r=3&v=1&_v=j101&tid=UA-132581314-1&cid=1693460729.1706837945&jid=1395748167&gjid=868920103&_gid=220105773.1706837945&_u=YADAAAAAAAAAAC~&z=1491377776
Requested by
Host: www.google-analytics.com
URL: https://www.google-analytics.com/analytics.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
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2404:6800:4003:c01::9b Singapore, Singapore, ASN15169 (GOOGLE, US),
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Software
Golfe2 /
Resource Hash
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Security Headers
Name Value
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Request headers

Referer
https://www.preface.ai/
accept-language
zh-SG,zh;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.6167.139 Safari/537.36
Content-Type
text/plain

Response headers

pragma
no-cache
strict-transport-security
max-age=10886400; includeSubDomains; preload
date
Fri, 02 Feb 2024 01:39:04 GMT
x-content-type-options
nosniff
last-modified
Sun, 17 May 1998 03:00:00 GMT
server
Golfe2
content-type
text/plain
access-control-allow-origin
https://www.preface.ai
cache-control
no-cache, no-store, must-revalidate
access-control-allow-credentials
true
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
8
expires
Fri, 01 Jan 1990 00:00:00 GMT
collect
www.google-analytics.com/ 		35 B
55 B 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://www.google-analytics.com/collect?v=1&_v=j101&a=1932541441&t=event&ni=1&_s=3&dl=https%3A%2F%2Fwww.preface.ai%2F&ul=en-us&de=UTF-8&dt=Redesign%20the%20notion%20of%20classroom%20%7C%20Preface%20%7C%20Preface&sd=24-bit&sr=1600x1200&vp=1600x1200&je=0&ec=Clarity&ea=2lbn01&_u=aDDAAAABAAAAAC~&jid=&gjid=&cid=1693460729.1706837945&tid=UA-132581314-1&_gid=220105773.1706837945&gtm=45He41v0n81T5JTPW2v810835184za200&gcd=11l1l1l1l1&dma=0&cd1=https%3A%2F%2Fclarity.microsoft.com%2Fga%2Fh4pz6ij4l3%2F1qs9d7j%2F2lbn01&z=940586635
Requested by
Host: www.preface.ai
URL: https://www.preface.ai/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
2001:4860:4802:32::178 , United States, ASN15169 (GOOGLE, US),
Reverse DNS
Software
Golfe2 /
Resource Hash
8337212354871836e6763a41e615916c89bac5b3f1f0adf60ba43c7c806e1015
Security Headers
Name Value
X-Content-Type-Options nosniff

Request headers

accept-language
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35 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.

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