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https://tangerine-gnome-a0d2e8.netlify.app

Infrastructure

· 17 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
83
GRADE
B
FIX
1
REVIEW
8
PASS
7
INFO
1
Probed from Amsterdam, Netherlands
401 Unauthorized
Checks
17
7 PASS 8 REVIEW 1 FIX
F
IPv6 Readiness
Action
IPv6 records exist but unreachable
FIX
IPv6 records exist but unreachable
Warning::
IPv6 DNS records exist but server is not reachable
Having AAAA records but an unreachable server is worse than no AAAA — clients may experience delays before falling back to IPv4.
Got: 2a05:d014:58f:6200::258, 2a05:d014:58f:6200::259
Info::
IPv6 connection error
Got: dial tcp6 [2a05:d014:58f:6200::258]:443: connect: no route to host
IPv6 Misconfigured
AAAA Records 2a05:d014:58f:6200::258, 2a05:d014:58f:6200::259 Connection UNREACHABLE

Having AAAA records but an unreachable server is worse than no AAAA — clients may experience delays before falling back to IPv4.

Why this matters

Advertising IPv6 (AAAA records) without a reachable server means IPv6-preferring clients silently fail every connection.

Learn more ▾

Modern browsers prefer IPv6 if AAAA exists (Happy Eyeballs algorithm). If the IPv6 server isn't reachable, browsers fall back to IPv4 — but with seconds of added latency per request. Either fix IPv6 reachability or remove the AAAA records.

Source: RFC 8305 (Happy Eyeballs)

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.
B
Reverse DNS
0/4 IPs match cert SAN
REVIEW
0/4 IPs match cert SAN
Info::
PTR for 35.157.26.135 does not match any cert SAN: ec2-35-157-26-135.eu-central-1.compute.amazonaws.com
Common when behind a CDN or shared hosting (PTR points at the provider's hostname). Mismatch can also affect mail deliverability if this IP sends email -- many MTAs reject mail when forward+reverse DNS disagree.
Info::
PTR for 63.176.8.218 does not match any cert SAN: ec2-63-176-8-218.eu-central-1.compute.amazonaws.com
Common when behind a CDN or shared hosting (PTR points at the provider's hostname). Mismatch can also affect mail deliverability if this IP sends email -- many MTAs reject mail when forward+reverse DNS disagree.
Info::
PTR lookup failed for 2a05:d014:58f:6200::258: lookup 2a05:d014:58f:6200::258: 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 2a05:d014:58f:6200::259: lookup 2a05:d014:58f:6200::259: 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.
B
Crawlability
no robots.txt, no sitemap
REVIEW
no robots.txt, no sitemap
Info::
No robots.txt found
robots.txt is optional but recommended. It tells search engine crawlers which pages to index.
Info::
No sitemap.xml found
A sitemap helps search engines discover and index your pages more efficiently.

robots.txt is optional but recommended. It tells search engine crawlers which pages to index.

Why this matters

No robots.txt — crawlers fetch /robots.txt and get 404; not breaking but means default crawl behavior with no directives or sitemap reference.

Learn more ▾

A minimal robots.txt with `User-agent: * / Allow: / / Sitemap: https://example.com/sitemap.xml` covers the basics. Without it, crawlers behave fine but lose the sitemap signal and can't be selectively blocked from crawl-traps.

Source: robotstxt.org

A sitemap helps search engines discover and index your pages more efficiently.

Why this matters

No sitemap.xml — Google relies on crawl-graph discovery alone, slowing indexing of deep or fresh URLs.

Learn more ▾

A sitemap accelerates Google's discovery of new and updated content. Most CMSes auto-generate one; static-site frameworks need a build-step plugin. Reference it from robots.txt and submit in Search Console to confirm Google can fetch it.

Source: sitemaps.org / Google Search Central

robots.txt No robots.txt found

No robots.txt found

This is fine for most sites — a missing robots.txt allows all crawling by default.

sitemap.xml No sitemap found

No sitemap found

Adding a sitemap helps search engines discover your pages.

B
TLS Certificate Expiry & Recommendations
213 days until leaf cert expires — 2 issues to address
REVIEW

Certificate validity

213
days left
0d 30d 60d 90d+

Recommended actions

  • 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
CDN & Delivery
Netlify
REVIEW
Netlify
Info::
Site is served via Netlify CDN
Got: x-nf-request-id: 01M0BH1EW658GCKBSG6FF1F2T7
CDN Detected: Netlify
Provider Netlify Evidence x-nf-request-id: 01M0BH1EW658GCKBSG6FF1F2T7
B
CDN Cache Observability
No CDN cache-status headers in the response
REVIEW
No CDN cache-status headers in the response
Info::
No CDN cache-status headers in the response
Without an X-Cache / CF-Cache-Status / X-Vercel-Cache / Age header, you can't tell from outside whether a request hit the cache or went to origin. Operationally important: enables debugging stale-content reports and verifying cache rules. Most managed CDN platforms emit at least one of these by default; absence often means the platform's diagnostic headers are stripped at an upstream proxy.
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.
A
DNS Records
2 A records, 11 ms lookup
PASS
2 A records, 11 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 35.157.26.135, 63.176.8.218
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2a05:d014:58f:6200::258, 2a05:d014:58f:6200::259
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: 11 ms
Got: 11 ms
A35.157.26.135, 63.176.8.218
AAAA2a05:d014:58f:6200::258, 2a05:d014:58f:6200::259
CNAME—
NS—
MX—
TXT—
CAALookup not available with standard resolver
Resolved in 11 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 5ms across 3 resolvers (spread 8ms)
PASS
Mean 5ms across 3 resolvers (spread 8ms)
Info::
Cloudflare: 2ms
Got: 2ms via 1.1.1.1:53
Info::
Quad9: 3ms
Got: 3ms via 9.9.9.9:53
Info::
Google: 10ms
Got: 10ms via 8.8.8.8:53
A+
Redirect Chain
0 redirect(s), 32 ms total
PASS
0 redirect(s), 32 ms total

https://tangerine-gnome-a0d2e8.netlify.a...

32 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://tangerine-gnome-a0d2e8.netlify.a...40132 msHTTP/1.1Netlify
A+
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
PASS
www/non-www, trailing slash, HTTP→HTTPS
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

https://www.tangerine-gnome-a0d2e8.netlify.app/
200https://tangerine-gnome-a0d2e8.netlify.app/

HTTP → HTTPS

301http://tangerine-gnome-a0d2e8.netlify.app/ → https://tangerine-gnome-a0d2e8.netlify.app/

Consistent

A+
HTTP Probe Timing
Total 166 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
5 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
9 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
9 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
167 ms
Total Time Total request time from DNS lookup through full response.
167 ms

Connection waterfall

DNS Lookup 5 ms TCP Connect 9 ms TLS Handshake 9 ms Server Processing 143 ms Content Transfer 0 ms
A+
Health Check Endpoint
Auth-protected health endpoint at https://tangerine-gnome-a0d2e8.netlify.app/health (HTTP 401)
PASS
Auth-protected health endpoint at https://tangerine-gnome-a0d2e8.netlify.app/health (HTTP 401)
Info::
Auth-protected health endpoint exposed at https://tangerine-gnome-a0d2e8.netlify.app/health
Got: https://tangerine-gnome-a0d2e8.netlify.app/health
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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