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https://6ac73823ac8ed6f14f8bd948--playful-druid-09ba17.netlify.app

Infrastructure

· 17 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
85
GRADE
B
FIX
1
REVIEW
5
PASS
10
INFO
1
Probed from New York, United Stated
200 OK
Checks
17
10 PASS 5 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: 2600:1f18:16e:df01::259, 2600:1f18:16e:df01::258
Info::
IPv6 connection error
Got: dial tcp6 [2600:1f18:16e:df01::259]:443: connect: no route to host
IPv6 Misconfigured
AAAA Records 2600:1f18:16e:df01::259, 2600:1f18:16e:df01::258 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 98.84.224.111 does not match any cert SAN: ec2-98-84-224-111.compute-1.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 18.208.88.157 does not match any cert SAN: ec2-18-208-88-157.compute-1.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 2600:1f18:16e:df01::259: lookup 2600:1f18:16e:df01::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.
Info::
PTR lookup failed for 2600:1f18:16e:df01::258: lookup 2600:1f18:16e:df01::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.
B
TLS Certificate Expiry & Recommendations
162 days until leaf cert expires — 2 issues to address
REVIEW

Certificate validity

162
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
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, 15 ms lookup
PASS
2 A records, 15 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 98.84.224.111, 18.208.88.157
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2600:1f18:16e:df01::259, 2600:1f18:16e:df01::258
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: 15 ms
Got: 15 ms
A98.84.224.111, 18.208.88.157
AAAA2600:1f18:16e:df01::259, 2600:1f18:16e:df01::258
CNAME—
NS—
MX—
TXT—
CAALookup not available with standard resolver
Resolved in 15 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 9ms across 3 resolvers (spread 21ms)
PASS
Mean 9ms across 3 resolvers (spread 21ms)
Info::
Quad9: 2ms
Got: 2ms via 9.9.9.9:53
Info::
Cloudflare: 4ms
Got: 4ms via 1.1.1.1:53
Info::
Google: 23ms
Got: 23ms via 8.8.8.8:53
A+
Redirect Chain
No redirects — direct access
PASS
No redirects — direct access
Info::
No redirects — direct access
Got: https://6ac73823ac8ed6f14f8bd948--playful-druid-09ba17.netlify.app

https://6ac73823ac8ed6f14f8bd948--playfu...

84 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://6ac73823ac8ed6f14f8bd948--playfu...20084 msHTTP/1.1Netlify
A+
Crawlability
robots.txt present, sitemap with 84 URLs
PASS
robots.txt present, sitemap with 84 URLs
Info::
robots.txt is present
Got: 1182 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 84 entries
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 1182 B Sitemaps referenced 1 User-agents ClaudeBot, CCBot, Bytespider, *, Googlebot, Bingbot, DuckDuckBot, Applebot, OAI-SearchBot, ChatGPT-User, PerplexityBot, Google-Extended, Applebot-Extended, GPTBot Blocking No — crawling allowed
# All Tax & Books — public search/AI discovery policy
# Public pages are crawlable. Internal API routes are excluded.

User-agent: *
Allow: /
Disallow: /api/

# Google Search
User-agent: Googlebot
Allow: /
Disallow: /api/

# Google Gemini / Vertex AI controls
User-agent: Google-Extended
Allow: /
Disallow: /api/

# Microsoft Bing / Copilot ecosystem
User-agent: Bingbot
Allow: /
Disallow: /api/

# DuckDuckGo
User-agent: DuckDuckBot
Allow: /
Disallow: /api/

# Apple Search / Siri / Spotlight / Safari
User-agent: Applebot
Allow: /
Disallow: /api/

# Apple generative-AI data-use control
User-agent: Applebot-Extended
Allow: /
Disallow: /api/

# OpenAI Search / ChatGPT Search
User-agent: OAI-SearchBot
Allow: /
Disallow: /api/

# OpenAI model-training crawler
User-agent: GPTBot
Allow: /
Disallow: /api/

# OpenAI user-triggered fetches
User-agent: ChatGPT-User
Allow: /
Disallow: /api/

# Anthropic
User-agent: ClaudeBot
Allow: /
Disallow: /api/

# Perplexity
User-agent: PerplexityBot
Allow: /
Disallow: /api/

# Common Crawl
User-agent: CCBot
Allow: /
Disallow: /api/

# ByteDance
User-agent: Bytespider
Allow: /
Disallow: /api/

Sitemap: https://alltaxbooks.com/sitemap.xml
sitemap.xml 200 OK
Type URL Set URLs 84 entries Valid XML Yes
Sample URLs:
A+
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
PASS
www/non-www, trailing slash, HTTP→HTTPS
Info::
HTTP correctly redirects to HTTPS permanently
Got: HTTP 301

www / non-www

https://www.6ac73823ac8ed6f14f8bd948--playful-druid-09ba17.netlify.app/
200https://6ac73823ac8ed6f14f8bd948--playful-druid-09ba17.netlify.app/

HTTP → HTTPS

301http://6ac73823ac8ed6f14f8bd948--playful-druid-09ba17.netlify.app/ → https://6ac73823ac8ed6f14f8bd948--playful-druid-09ba17.netlify.app/

Consistent

A+
HTTP Probe Timing
Total 207 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
7 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
8 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
10 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
206 ms
Total Time Total request time from DNS lookup through full response.
207 ms

Connection waterfall

DNS Lookup 7 ms TCP Connect 8 ms TLS Handshake 10 ms Server Processing 182 ms Content Transfer 1 ms
A
CDN & Delivery
Netlify ("Netlify Edge"; fwd=miss; fwd-status=200; stored)
PASS
Netlify ("Netlify Edge"; fwd=miss; fwd-status=200; stored)
Info::
Document is served via Netlify CDN
Got: delegation 6ac73823ac8ed6f14f8bd948--playful-druid-09ba17.netlify.app
Info::
CDN cache status: "Netlify Edge"; fwd=miss; fwd-status=200; stored
Document served via CDN: Netlify
Provider Netlify Cache Status "Netlify Edge"; fwd=miss; fwd-status=200; stored Evidence delegation 6ac73823ac8ed6f14f8bd948--playful-druid-09ba17.netlify.app
A+
CDN Cache Observability
Cache state: Age=1s
PASS
Cache state: Age=1s
Info::
CDN cache state observable via 1 header(s)
Got: age=1
A+
Health Check Endpoint
Health endpoint at https://6ac73823ac8ed6f14f8bd948--playful-druid-09ba17.netlify.app/health (HTTP 200)
PASS
Health endpoint at https://6ac73823ac8ed6f14f8bd948--playful-druid-09ba17.netlify.app/health (HTTP 200)
Info::
Public health endpoint at https://6ac73823ac8ed6f14f8bd948--playful-druid-09ba17.netlify.app/health
Got: https://6ac73823ac8ed6f14f8bd948--playful-druid-09ba17.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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