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https://prinstudio-test.sanchai4245.workers.dev

Infrastructure

· 17 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
84
GRADE
B
FIX
0
REVIEW
8
PASS
8
INFO
1
Probed from Madrid, Spain
200 OK
Checks
17
8 PASS 8 REVIEW
B
DNSSEC
Unsigned (DNSSEC not deployed)
REVIEW
Unsigned (DNSSEC not deployed)
Info::
DNSSEC is not deployed
The zone is not DNSSEC-signed. Users on validating resolvers (Cloudflare 1.1.1.1, Quad9 9.9.9.9, growing default in mobile resolvers) get no protection against DNS spoofing for this domain. Most registrars now offer DNSSEC at a single click; consider enabling it for sites where authenticity matters (banking, healthcare, government).
B
CAA Records
No CAA records (any CA may issue certificates)
REVIEW
No CAA records (any CA may issue certificates)
Info::
No CAA records published
Without CAA records, any publicly-trusted CA can issue certificates for this domain. Adding a CAA record (`yourdomain. IN CAA 0 issue "letsencrypt.org"`) restricts issuance to CAs you authorize. Required by CAB Forum baseline since 2017; the default of 'any CA' is widely supported but is the broader attack surface for issuance fraud.
C
Reverse DNS
Action
0/4 IPs match cert SAN
REVIEW
0/4 IPs match cert SAN
Info::
PTR lookup failed for 172.67.161.104: lookup 172.67.161.104: no such host
No reverse DNS record set for this IP. Common on bare cloud-VM IPs without provider-side PTR; not a security issue.
Info::
PTR lookup failed for 104.21.90.210: lookup 104.21.90.210: no such host
No reverse DNS record set for this IP. Common on bare cloud-VM IPs without provider-side PTR; not a security issue.
Info::
PTR lookup failed for 2606:4700:3033::6815:5ad2: lookup 2606:4700:3033::6815:5ad2: no such host
No reverse DNS record set for this IP. Common on bare cloud-VM IPs without provider-side PTR; not a security issue.
Info::
PTR lookup failed for 2606:4700:3034::ac43:a168: lookup 2606:4700:3034::ac43:a168: no such host
No reverse DNS record set for this IP. Common on bare cloud-VM IPs without provider-side PTR; not a security issue.
C
Crawlability
Action
robots.txt present, sitemap with 12 URLs
REVIEW
robots.txt present, sitemap with 12 URLs
Info::
robots.txt is present
Got: 26 bytes
Critical::
robots.txt blocks all crawlers
Disallow: / for all user-agents prevents search engines from indexing any page. This will remove the site from search results.
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 12 entries
Info::
robots.txt does not reference a sitemap
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

Disallow: / for all user-agents prevents search engines from indexing any page. This will remove the site from search results.

Why this matters

Disallow: / in robots.txt blocks every search crawler — the site becomes invisible in organic search.

Learn more ▾

Common deployment mistake: a staging robots.txt with `User-agent: * / Disallow: /` ships to prod. The site falls out of search results within days. Verify your robots.txt is the production-intended version. If this is intentional (private site), no action needed.

Source: Google Search Central

Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

Why this matters

robots.txt omits Sitemap: directive — crawlers must fetch /sitemap.xml by convention; reliable but missing the explicit hint.

Source: sitemaps.org

robots.txt 200 OK
Size 26 B Sitemaps referenced 0 User-agents * Blocking Yes — all crawlers blocked
User-agent: *
Disallow: /
sitemap.xml 200 OK
Type URL Set URLs 12 entries Valid XML Yes
Sample URLs:
B
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
REVIEW
www/non-www, trailing slash, HTTP→HTTPS
Critical::
HTTP version does not redirect to HTTPS
Got: HTTP 200 Expected: 301 redirect to HTTPS

www / non-www

https://www.prinstudio-test.sanchai4245.workers.dev/
200https://prinstudio-test.sanchai4245.workers.dev/

HTTP → HTTPS

200http://prinstudio-test.sanchai4245.workers.dev/

HTTP version does not redirect to HTTPS

B
TLS Certificate Expiry & Recommendations
43 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

43
days left
0d 30d 60d 90d+

Recommended actions

  • Enable HSTS: Strict-Transport-Security: max-age=31536000; includeSubDomains
  • Enable DNSSEC on your domain for DNS spoofing protection
  • Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
B
Operational Status Page
No status page link detected
REVIEW
No status page link detected
Info::
No operational status page link detected
Status pages communicate planned maintenance and incidents to users -- a hallmark of operationally-mature services. Most SaaS teams publish one via Atlassian Statuspage, Instatus, BetterUptime, or a self-hosted Cachet. Smaller sites legitimately don't need one; flagged as Info, not a failure.
B
Health Check Endpoint
No conventional health endpoint found
REVIEW
No conventional health endpoint found
Info::
No conventional health endpoint found
Health endpoints (/health, /healthz, /status, /ping, /api/health) let uptime monitors, load balancers, and orchestration systems (Kubernetes, ECS, Fly.io) verify the service is alive. Marketing sites and small services often skip them legitimately; flagged as Info, not a failure. Probe results: /api/health: 404, /health: 404, /healthz: 404, /ping: 404, /status: 404.
A
DNS Records
2 A records, 43 ms lookup
PASS
2 A records, 43 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 172.67.161.104, 104.21.90.210
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2606:4700:3033::6815:5ad2, 2606:4700:3034::ac43:a168
Info::
No NS records found
Info::
No MX records — email not configured via DNS
Info::
No SPF record found in TXT records
SPF helps prevent email spoofing. Add a TXT record starting with 'v=spf1'.
Info::
DNS resolution time: 43 ms
Got: 43 ms
A172.67.161.104, 104.21.90.210
AAAA2606:4700:3033::6815:5ad2, 2606:4700:3034::ac43:a168
CNAME—
NS—
MX—
TXT—
CAALookup not available with standard resolver
Resolved in 43 ms

SPF helps prevent email spoofing. Add a TXT record starting with 'v=spf1'.

Why this matters

Without SPF, receiving servers can't validate sending IPs — your domain is easier to spoof in phishing.

Learn more ▾

SPF complements DMARC. Both should be published. SPF records list authorized sending IPs (e.g., `v=spf1 include:_spf.google.com ~all` for Google Workspace). After publishing, verify in Google Postmaster Tools or mxtoolbox.

Source: RFC 7208 (SPF)

A+
Subdomain Takeover
No subdomain takeover risk detected
PASS
No subdomain takeover risk detected
Info::
No CNAME record present
A+
Multi-Resolver DNS Speed
Mean 18ms across 3 resolvers (spread 10ms)
PASS
Mean 18ms across 3 resolvers (spread 10ms)
Info::
Quad9: 15ms
Got: 15ms via 9.9.9.9:53
Info::
Google: 16ms
Got: 16ms via 8.8.8.8:53
Info::
Cloudflare: 25ms
Got: 25ms via 1.1.1.1:53
A+
Redirect Chain
No redirects — direct access
PASS
No redirects — direct access
Info::
No redirects — direct access
Got: https://prinstudio-test.sanchai4245.workers.dev

https://prinstudio-test.sanchai4245.work...

110 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://prinstudio-test.sanchai4245.work...200110 msHTTP/1.1cloudflare
A+
IPv6 Readiness
IPv6 reachable (17 ms)
PASS
IPv6 reachable (17 ms)
Info::
IPv6 is configured and reachable at 2606:4700:3033::6815:5ad2, 2606:4700:3034::ac43:a168
Got: 17 ms connect
IPv6 Ready
AAAA Records 2606:4700:3033::6815:5ad2, 2606:4700:3034::ac43:a168 Connection Reachable (17 ms)
A+
HTTP Probe Timing
Total 237 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
40 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
17 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
26 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
233 ms
Total Time Total request time from DNS lookup through full response.
237 ms

Connection waterfall

DNS Lookup 40 ms TCP Connect 17 ms TLS Handshake 26 ms Server Processing 150 ms Content Transfer 5 ms
A+
CDN & Delivery
Cloudflare Workers (HIT)
PASS
Cloudflare Workers (HIT)
Info::
Document is served via Cloudflare Workers CDN
Got: delegation prinstudio-test.sanchai4245.workers.dev
Info::
CDN cache status: HIT
Document served via CDN: Cloudflare Workers
Provider Cloudflare Workers Cache Status HIT Evidence delegation prinstudio-test.sanchai4245.workers.dev
A+
CDN Cache Observability
Cache state: HIT
PASS
Cache state: HIT
Info::
CDN cache state observable via 1 header(s)
Got: cf-cache-status=HIT
Domain Intelligence
Domain intelligence data not available
INFO
Domain intelligence data not available

RDAP and WHOIS lookup both failed

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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