DomainCat

Monitor SSL certificates (including the origin cert behind Cloudflare), domain expiry dates, DNS records, WHOIS data, and email security for all your domains. Get alerts before anything expires.

Developer Tools Added 7 Nov 2026 Analysed 7 Nov 2026 via

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What we found

Analytics set tracking cookies before any opt-in, and we found no consent manager.
Built with React, the site is served through Cloudflare, with a domain registered 8 months before launch.
Only 45 launches we've crawled run Microsoft Entra ID.

Built with: 19 technologies

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For light pages

<a href="https://firstsited.com/launch/wlht8zm1/domaincat"><img src="https://firstsited.com/badge/wlht8zm1/stack.svg" alt="DomainCat tech stack on FirstSited" height="28"></a>

For dark pages

<a href="https://firstsited.com/launch/wlht8zm1/domaincat"><img src="https://firstsited.com/badge/wlht8zm1/stack.svg?theme=dark" alt="DomainCat tech stack on FirstSited" height="28"></a>

Technology	Type
Infrastructure
Cloudflare	CDN
Cloudflare DNS	DNS
HTTP/3	Protocol
HSTS	Security
Email
Resend	Transactional email
Build & Framework
Auth0	Auth
Google Sign-In	Auth
Microsoft Entra ID	Auth
PagerDuty	Developer tools
Vite	Developer tools
Google Fonts	Font
React	Framework
Analytics & Marketing
Cloudflare Web Analytics (3)	Analytics
Google Analytics (5)	Analytics
Bing Webmaster	SEO
Google Search Console (2)	SEO
Google Tag Manager (3)	Tag management
Commerce & Payments
Stripe	Payments
Business Tools
Zapier	Productivity

Each technology links to its own page: which other new sites launched with it.

Site checks

Page basicsHow we check
	Custom title and meta description
	Open Graph tags (title, image, description)
	Twitter card meta tags
	Canonical URL declared
	Responsive viewport meta tag
	Favicon present
	Semantic HTML (nav, main, article)
	Meta description is 194 characters Google only shows about 155–160 characters of the description in desktop search results (less on mobile); anything past that won't appear.

Security headersHow we check
	Referrer-Policy
	X-Frame-Options
	Permissions-Policy experimental
	X-Content-Type-Options
	Content-Security-Policy blocks 1 of the site's own resource
	Strict-Transport-Security
	X-XSS-Protection deprecated, not counted

Legal pages
	Privacy policy /privacy
	Terms of service /terms
	Consent manager not detected; analytics set tracking cookies on our visit with no opt-in step

Mentions: Do Not Sell

Crawl files
	robots.txt
	sitemap.xml 14 URLs
	security.txt
	llms.txt optional
	ads.txt only for ad-funded sites
	humans.txt optional

AI crawlers No stanceHow we check
	llms.txt published not published
	No AI bots blocked in robots.txt
	Content-Signal none declared
	Link headers none advertised

Email

Record	Status	What it does
SPF -all	Strict (-all)	Lists the servers allowed to send email for the domain.
DMARC p=reject	Reject (strict)	Tells receivers what to do with email that fails SPF or DKIM.
DKIM	Found	Signs outgoing email. We check common selectors only, so a provider may use another.
MTA-STS	Not deployed	Stops email to the domain being downgraded to plain text in transit.
TLS-RPT	Not configured	Sends the owner reports of failed encrypted deliveries.

Hosting and network

Network	CLOUDFLARENET - Cloudflare, Inc., US AS13335, US
DNS	Cloudflare DNS authoritative nameservers
DNSSEC	Not enabled DNS answers are unsigned
Certificate	Let's Encrypt valid 1 Nov 2026 to 30 Jan 2027, as captured
Domain age	8 months registered Mar 2026, Namecheap Inc.
Green hosting	Yes per The Green Web Foundation
Page build	4 JS files, 2 CSS files 6 third-party domains, code splitting
App manifest	DomainCat display standalone; 2 icons; productivity, utilities
Brand colours

Storage: 3 items

Cookies 2
Name	Lifetime	Set by
_ga	1y	Google Analytics
_ga_FD7V471NKB	1y	Google Analytics

Local storage 1
Key	Size	Set by
dc-theme	4 B	-

Performance

Measure	This site	Reading
Server response	545 ms	fair, faster than 27% of sites
Largest contentful paint	1,284 ms	good
Layout shift	0.00	good
Page weight	736 KB	light
Image weight	0 KB	light
Third-party domains	6
Console errors	0	none
Failed requests	0	none

From a single automated render of the home page. A quick guide, not a substitute for Lighthouse or field data. How we measure

Notes

Looks AI-built: few AI signals. How much the site looks AI-generated. It is a pattern match shown for interest, not a verdict.

Which signals fired

Signal	Points
AI copy signals	+5
AI writing signals	+5
AI iconography signals	+3
AI styling signals	+10

Analytics set tracking cookies on our visit and no consent manager was detected. UK and EU GDPR require opt-in before tracking runs, and more than 20 US states require honouring opt-out requests.
Performance comes from one render on 7 November 2026 and will vary between visits.

How we know

FirstSited records what new websites are built with, usually within a day of going live. Most we find ourselves, by watching public internet infrastructure for brand-new sites; the rest come from Product Hunt, Hacker News and PeerPush. We checked this one in full: its tech stack, DNS, security headers and page basics. This page is what we saw on 7 November 2026; the live site may have changed since.

Every technology below links to its own page: which other new sites launched with it. Watch any of them and get every new site that uses it as it goes live, from £15 a month.

Spot a mistake? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.