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Security Analysis Results

1letter.pl

Comprehensive domain security and infrastructure analysis

Live Website Preview

website screenshot of https://1letter.pl/

No Security Risks Detected

This domain appears to be safe and secure

100%
Score

Disclaimer: This assessment is based on automated analysis of publicly available information. Results are for informational purposes only. For critical applications, consult security professionals.

Scan Information

Last checked:February 23, 2026 19:43:32
Target URL:https://1letter.pl/
Scan Complete

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Page Information

Target URL
https://1letter.pl/
Page Title
OneLetter - Twój AI Newsletter z YouTube
1letter.pl faviconSite Favicon
Status
Active

Host Information

Domain
1letter.pl
Server
cloudflare
Country
United States
IP Address
104.21.47.160
ASN Information
13335
CLOUDFLARENET

Technologies

Node.js logo
Node.js
Programming languages
React logo
React
JavaScript frameworks
Next.js logo
Next.js
JavaScript frameworks
Facebook Pixel logo
Facebook Pixel
Analytics
Cloudflare Browser Insights logo
Cloudflare Browser Insights
Analytics
Cloudflare logo
Cloudflare
CDN
+2 more technologies detected

SSL Certificate

HTTPS Enabled
Secure
Certificate Issuer
WE1
Valid From
2026-02-16 19:27:17
Valid Until
2026-05-17 19:20:39
Subject Name
1letter.pl

Performance Statistics

50
Total Requests
7
Domains
7
IP Addresses
454.58 KB
Transfer Size
Content Size1.38 MB

HTTP Headers

alt-svc
h3=":443"; ma=86400
cache-control
private, no-cache, no-store, max-age=0, must-revalidate
cf-cache-status
DYNAMIC
cf-ray
9d2936aa3e84398e-LAX
content-encoding
zstd
content-type
text/html; charset=utf-8
date
Mon, 23 Feb 2026 19:43:41 GMT
link
</_next/static/media/1b99372b3eaef0c8-s.p.758e15a8.woff2>; rel=preload; as="font"; crossorigin=""; type="font/woff2", </_next/static/chunks/a65171cdbd764622.css>; rel=preload; as="style"
nel
{"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
report-to
{"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=pJdG%2F9sSbOsVQ523q98YkO7RBvr6MJtF%2FuYV0nD9tfeFgsvbP2ceiMU5348ENnaVZwmMmUtn%2Bgmi4Ei3HY4khUH3hlozeeH0X4UZMjYHCB%2BjI8vGs1I%3D"}]}
server
cloudflare
server-timing
cfCacheStatus;desc="DYNAMIC" cfEdge;dur=8,cfOrigin;dur=336
vary
rsc,next-router-state-tree,next-router-prefetch,next-router-segment-prefetch,Accept-Encoding
x-powered-by
Next.js
14 headers detected

Technology Stack Analysis

Node.js

Node.js

Programming languages

Node.js is an open-source, cross-platform, JavaScript runtime environment that executes JavaScript code outside a web browser.

React

React

JavaScript frameworks

React is an open-source JavaScript library for building user interfaces or UI components.

Next.js

Next.js

JavaScript frameworksWeb frameworks

Next.js is a React framework for developing single page Javascript applications.

Facebook Pixel

Facebook Pixel

Analytics

Facebook pixel is an analytics tool that allows you to measure the effectiveness of your advertising.

Cloudflare Browser Insights

Cloudflare Browser Insights

AnalyticsRUM

Cloudflare Browser Insights is a tool that measures the performance of websites from the perspective of users.

Cloudflare

Cloudflare

CDN

Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.

Webpack

Webpack

Miscellaneous

Webpack is an open-source JavaScript module bundler.

HTTP/3

HTTP/3

Miscellaneous

HTTP/3 is the third major version of the Hypertext Transfer Protocol used to exchange information on the World Wide Web.

Website Cookies 3

_fbp

.1letter.pl

Lax
Value
fb.1.1771875823864.29276618206333050
Expires:5/24/2026

__Host-next-auth.csrf-token

1letter.pl

HttpOnly Secure Lax
Value
[__Host-next-auth.csrf-token redacted]
Expires:Session

__Secure-next-auth.callback-url

1letter.pl

HttpOnly Secure Lax
Value
[__Secure-next-auth.callback-url redacted]
Expires:Session

External Links 5

Zobacz na YouTube

www.youtube.com

Analyze
Target URL
https://www.youtube.com/watch?v=3JH9ebavj4Y

Zobacz na YouTube

www.youtube.com

Analyze
Target URL
https://www.youtube.com/watch?v=3cKA4WbFohA

Zobacz na YouTube

www.youtube.com

Analyze
Target URL
https://www.youtube.com/watch?v=4YaaXT-v4ko

Zobacz na YouTube

www.youtube.com

Analyze
Target URL
https://www.youtube.com/watch?v=nIQnDFAh9nI

Zobacz na YouTube

www.youtube.com

Analyze
Target URL
https://www.youtube.com/watch?v=8II03jdYiIA

Requested Domains 7

1letter.pl

Apex domain
No category information available

connect.facebook.net

Unknown Type
No category information available

fonts.googleapis.com

Unknown Type
No category information available

fonts.gstatic.com

Unknown Type
No category information available

static.cloudflareinsights.com

Unknown Type
No category information available

www.facebook.com

Unknown Type
No category information available

yt3.ggpht.com

Unknown Type
No category information available
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