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Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
86
GRADE
B
FIX
1
REVIEW
1
PASS
7
INFO
0
Probed from Santa Clara, United States
200 OK
Checks
9
7 PASS 1 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: 2606:4700:4404::ac40:9419, 2606:4700:4407::6812:27e7
Info::
IPv6 connection error
Got: dial tcp6 [2606:4700:4404::ac40:9419]:443: connect: network is unreachable
IPv6 Misconfigured
AAAA Records 2606:4700:4404::ac40:9419, 2606:4700:4407::6812:27e7 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
TLS Certificate Expiry & Recommendations
59 days until leaf cert expires — 2 issues to address
REVIEW

Certificate validity

59
days left
0d 30d 60d 90d+

Recommended actions

  • Extend HSTS max-age to at least 31536000 (1 year) to meet the preload list criteria
  • Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A+
DNS Records
2 A records, 8 ms lookup
PASS
2 A records, 8 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 104.18.39.231, 172.64.148.25
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2606:4700:4404::ac40:9419, 2606:4700:4407::6812:27e7
Info::
2 nameserver(s) configured
Got: ns1.ubmdns.com, ns2.ubmdns.com
Info::
2 mail exchanger(s) configured
Info::
CAA records not checked
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Info::
SPF record present in TXT
Info::
DNS resolution time: 8 ms
Got: 8 ms
A104.18.39.231, 172.64.148.25
AAAA2606:4700:4404::ac40:9419, 2606:4700:4407::6812:27e7
CNAME—
NSns1.ubmdns.com, ns2.ubmdns.com
MX
0 smtp.secureserver.net
10 mailstore1.secureserver.net
TXT
google-site-verification=Ptswr-5L0wXw4e_OrTe2hmDQ5wj_IqiEYUtHiz4K050
SPF v=spf1 a ip4:35.224.70.159 ip4:67.227.230.43/32 include:_spf.google.com include:...
CAALookup not available with standard resolver
Resolved in 8 ms

CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.

Why this matters

Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.

A+
Redirect Chain
No redirects — direct access
PASS
No redirects — direct access
Info::
No redirects — direct access
Got: https://contentmarketinginstitute.com

https://contentmarketinginstitute.com

75 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://contentmarketinginstitute.com20075 msHTTP/1.1cloudflare
A+
Crawlability
robots.txt present, sitemap with 41 URLs
PASS
robots.txt present, sitemap with 41 URLs
Info::
robots.txt is present
Got: 1470 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 41 entries
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 1470 B Sitemaps referenced 11 User-agents Magpie-crawler, Omgilibot, PanguBot, Peer39_crawler/1.0, Bytespider, Claude-Web, Peer39_crawler, Webzio-Extended, *, AwarioSmartBot, ClaudeBot, Meta-ExternalAgent, Omgili, Amazonbot, Cohere-ai, Diffbot, FacebookBot, GPTBot, ImagesiftBot, Timpibot, Anthropic-ai, Applebot-Extended, AwarioRssBot, CCBot Blocking No — crawling allowed
User-agent: *
Sitemap: https://contentmarketinginstitute.com/sitemap.xml
Sitemap: https://contentmarketinginstitute.com/googlenews.xml
Sitemap: https://contentmarketinginstitute.com/contributors.xml
Sitemap: https://contentmarketinginstitute.com/generic-content.xml
Sitemap: https://contentmarketinginstitute.com/image-archive-index.xml
Sitemap: https://contentmarketinginstitute.com/news-archive-index.xml
Sitemap: https://contentmarketinginstitute.com/document-archive-index.xml
Sitemap: https://contentmarketinginstitute.com/videos-archive-index.xml
Sitemap: https://contentmarketinginstitute.com/articles-archive-index.xml
Sitemap: https://contentmarketinginstitute.com/webinar-archive-index.xml
Sitemap: https://contentmarketinginstitute.com/sitemap-index.xml
Disallow: /search
Disallow: /recipe-portal/search
Disallow: /api/health
Disallow: /cdn-cgi/
Disallow: /live-preview/
Disallow: /my-purchases/
User-agent: Amazonbot
User-agent: Anthropic-ai
User-agent: Applebot-Extended
User-agent: AwarioRssBot
User-agent: AwarioSmartBot
User-agent: Bytespider
User-agent: CCBot
User-agent: ClaudeBot
User-agent: Claude-Web
User-agent: Cohere-ai
User-agent: Diffbot
User-agent: FacebookBot
User-agent: GPTBot
User-agent: ImagesiftBot
User-agent: Magpie-crawler
User-agent: Meta-ExternalAgent
User-agent: Omgili
User-agent: Omgilibot
User-agent: PanguBot
User-agent: Peer39_crawler
User-agent: Peer39_crawler/1.0
User-agent: Timpibot
User-agent: Webzio-Extended
Disallow: /
sitemap.xml 200 OK
Type URL Set URLs 41 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::
www/non-www redirect configured correctly (preferred: non-www)
Warning::
HTTP→HTTPS redirect uses 302 instead of 301
Got: 302 temporary redirect Expected: 301 permanent redirect

www / non-www

301https://www.contentmarketinginstitute.com/
200https://contentmarketinginstitute.com/

Preferred variant: non-www

HTTP → HTTPS

308http://contentmarketinginstitute.com/ → https://contentmarketinginstitute.com/

Use 301 (permanent) instead of 302 (temporary)

A+
Domain Intelligence
contentmarketinginstitute.com — via SafeNames Ltd., 16 years, 7 months old, hosted on Cloudflare
PASS
contentmarketinginstitute.com — via SafeNames Ltd., 16 years, 7 months old, hosted on Cloudflare
Info::
Domain registered until Nov 24, 2026 (7 months remaining)
Info::
DNSSEC is enabled
Info::
Registrar: SafeNames Ltd.
Warning::
Registrar lock is NOT enabled
The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.
Info::
Hosting: Cloudflare
Got: AS13335
Domain expiry

164 days

November 24, 2026

SSL certificate

59 days

Issued by Google Trust Services

Domain age

16 years, 7 months

Registered November 24, 2009

DNSSEC

Enabled

Protects against DNS spoofing

Hosting

Cloudflare

ASN AS13335

104.18.39.231

Registrar

SafeNames Ltd.

Unlocked 2 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar SafeNames Ltd.
Created November 24, 2009 (16 years, 7 months ago)
Expires November 24, 2026 (7 months)
Last Updated November 25, 2025
Name Servers ns1.ubmdns.com, ns2.ubmdns.com
DNSSEC Enabled
Hosting
IP Address 104.18.39.231
ASN AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
Provider Cloudflare
Data source: rdap (0.2s)

The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.

Why this matters

Without registrar lock, an attacker who phishes your registrar credentials can transfer the domain in minutes — total brand hijack.

Learn more ▾

Registrar lock (clientTransferProhibited, clientUpdateProhibited, clientDeleteProhibited) requires extra verification before any transfer/update/delete. Every major registrar offers it free. Combined with 2FA on your registrar account, it's the strongest defense against domain hijacking.

Source: ICANN / domain-security best practice

A+
HTTP Probe Timing
Total 74 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.
2 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.
70 ms
Total Time Total request time from DNS lookup through full response.
74 ms

Connection waterfall

DNS Lookup 7 ms TCP Connect 2 ms TLS Handshake 9 ms Server Processing 52 ms Content Transfer 4 ms
A+
CDN & Delivery
Cloudflare (HIT)
PASS
Cloudflare (HIT)
Info::
Site is served via Cloudflare CDN (edge: SJC)
Got: cf-ray: 9f007c041fc467d7-SJC
Info::
CDN cache status: HIT
CDN Detected: Cloudflare
Provider Cloudflare Cache Status HIT Evidence cf-ray: 9f007c041fc467d7-SJC
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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