95%
confidence
Evidence (1 signal)
Header
Server header contains "nginx"
nginx/1.28.3
Tech stack of FastBuild (fastbuildapp.com)
4Technologies
4Categories
200HTTP Status
1151msScan Time
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AI builder check
No AI builder evidence found
None of the 33 fingerprints we track for 9 AI app builders (Lovable, Bolt.new, v0, Replit, Base44, Manus, Anything, Emergent and YouWare) appear on this page. That is not proof the site was coded by hand: code written with AI assistants such as Cursor, Claude Code or GitHub Copilot leaves no public trace, and builder markers can be removed after an export.
This check names the builder platform from public evidence. It does not measure how much of the code was written by AI. How the check works and how accurate it is
Detected technologies (4)
90%
confidence
Evidence (1 signal)
DNS
Cloudflare nameservers
NS: darwin.ns.cloudflare.com
90%
confidence
Evidence (1 signal)
Html Pattern
Web app manifest link
<link rel="manifest"
80%
confidence
Evidence (1 signal)
Html Pattern
Tailwind variant-prefixed utility classes
class="flex justify-between items-center px-6 md:px-margin-desktop py-4 max-w-container-max mx-auto"
Website details
Network & TLS
IP address89.167.16.241
Reverse DNSmail.fastbuildapp.com
ProtocolHTTP/1.1
TLS issuerLet's Encrypt
Cert. expires
Dec 19, 2026 62 days
DNS records
Nameserversdarwin.ns.cloudflare.com
nia.ns.cloudflare.com
Mail serversmail.fastbuildapp.com
Security headers 3/6
strict-transport-securityPresent
content-security-policyMissing
x-content-type-optionsPresent
x-frame-optionsMissing
referrer-policyPresent
permissions-policyMissing
Page insights
LanguageEN
HTML size48 KB (gzip)
Resources6 scripts · 1 stylesheets · 8 images
Open GraphPresent
Raw HTTP Headers
server
nginx/1.28.3 (Ubuntu)
date
Sat, 17 Oct 2026 14:29:19 GMT
content-type
text/html
last-modified
Thu, 15 Oct 2026 17:44:37 GMT
transfer-encoding
chunked
connection
keep-alive
etag
W/"6ad11105-c18f"
strict-transport-security
max-age=31536000
x-content-type-options
nosniff
referrer-policy
strict-origin-when-cross-origin
content-encoding
gzip