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https://corporatefinanceinstitute.com

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
100
GRADE
A+
FIX
0
REVIEW
1
PASS
8
INFO
0
Probed from Madrid, Spain
200 OK
Checks
9
8 PASS 1 REVIEW
B
TLS Certificate Expiry & Recommendations
37 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

37
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 DNSSEC on your domain for DNS spoofing protection
  • Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A+
DNS Records
2 A records, 32 ms lookup
PASS
2 A records, 32 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 104.20.16.201, 172.66.153.22
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2606:4700:10::ac42:9916, 2606:4700:10::6814:10c9
Info::
2 nameserver(s) configured
Got: deb.ns.cloudflare.com, chuck.ns.cloudflare.com
Info::
5 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: 32 ms
Got: 32 ms
A104.20.16.201, 172.66.153.22
AAAA2606:4700:10::ac42:9916, 2606:4700:10::6814:10c9
CNAME—
NSdeb.ns.cloudflare.com, chuck.ns.cloudflare.com
MX
10 aspmx.l.google.com
20 alt1.aspmx.l.google.com
30 alt2.aspmx.l.google.com
40 aspmx2.googlemail.com
50 aspmx3.googlemail.com
TXT
MS=B69212C676437B6B93ADC4A7588AB27978246033
google-site-verification=5bzb2z4vggXJWZJKOBZsHb6GdbMj0yNDjTsMVeA_75I
openai-domain-verification=dv-nFyLRFLmecY3xaFIznIgaiTF
facebook-domain-verification=98d4b183a0tf432ahz55l4bcrev02s
google-site-verification=03LFG2S1iweo2AUjS8Onn79dKpDbmknebmEHqCloq4E
google-site-verification=mkgGWDZPIn0oxifQJryGcYQqXHr6SCAAGon3hUCL6EM
TAILSCALE-Mpvb5hZ9ku1KJxL4MXVv
status-page-domain-verification=6v4pdfzrsxkk
SPF v=spf1 include:_spf.mlsend.com include:_spf.google.com include:mail.zendesk.com ...
apple-domain-verification=VdtA6bMysbwsqKNO
asv=b1219f672a4ea295aa46b14d39c37289
ca3-11a7f044d90d4f09834919eb30e978fe
MS=ms77797894
klaviyo-site-verification=TsKLPy
CAALookup not available with standard resolver
Resolved in 32 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://corporatefinanceinstitute.com

https://corporatefinanceinstitute.com

717 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://corporatefinanceinstitute.com200717 msHTTP/1.1cloudflare
A+
IPv6 Readiness
IPv6 reachable (17 ms)
PASS
IPv6 reachable (17 ms)
Info::
IPv6 is configured and reachable at 2606:4700:10::ac42:9916, 2606:4700:10::6814:10c9
Got: 17 ms connect
IPv6 Ready
AAAA Records 2606:4700:10::ac42:9916, 2606:4700:10::6814:10c9 Connection Reachable (17 ms)
A+
Crawlability
robots.txt present, sitemap with 13 URLs
PASS
robots.txt present, sitemap with 13 URLs
Info::
robots.txt is present
Got: 465 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 13 entries
Info::
Sitemap index with 13 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 465 B Sitemaps referenced 1 User-agents * Blocking No — crawling allowed
User-agent: *
Disallow: /wp-admin/
Disallow: /wp-login.php
Disallow: /cdn-cgi/
Disallow: /cfi-for-teams-old/
Disallow: /course-planner/
Disallow: /feed/
Disallow: /getting-started-instructions/
Disallow: /integrations/
Disallow: /login/
Disallow: /topic/$
Disallow: /topic/page/
Disallow: /whats-your-finance-personality/
Disallow: /courses/take
Disallow: /search/*
Disallow: /wp-admin/admin-ajax.php
Sitemap: https://corporatefinanceinstitute.com/sitemap_index.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 13 entries Valid XML Yes
Child Sitemaps:
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)
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

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

Preferred variant: non-www

HTTP → HTTPS

301http://corporatefinanceinstitute.com/ → https://corporatefinanceinstitute.com/

Consistent

A+
Domain Intelligence
corporatefinanceinstitute.com — via NameCheap, Inc., 10 years, 7 months old
PASS
corporatefinanceinstitute.com — via NameCheap, Inc., 10 years, 7 months old
Info::
Domain registered until Oct 29, 2032 (6 years, 7 months remaining)
Info::
DNSSEC is not enabled
DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.
Info::
Registrar: NameCheap, Inc.
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.
Domain expiry

2327 days

October 29, 2032

SSL certificate

37 days

Issued by Google Trust Services

Domain age

10 years, 7 months

Registered October 29, 2015

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Unknown

2606:4700:10::ac42:9916

Registrar

NameCheap, Inc.

Unlocked 2 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
  • Enable DNSSEC to protect visitors from DNS spoofing
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar NameCheap, Inc.
Created October 29, 2015 (10 years, 7 months ago)
Expires October 29, 2032 (6 years, 7 months)
Last Updated July 11, 2023
Name Servers chuck.ns.cloudflare.com, deb.ns.cloudflare.com
DNSSEC Not enabled
Hosting
IP Address 2606:4700:10::ac42:9916
Data source: rdap (0.1s)

DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.

Why this matters

Without DNSSEC, an attacker who can poison your DNS can hijack your domain — and SSL certs alone don't stop them.

Learn more ▾

DNSSEC adds cryptographic signatures to DNS records, preventing forged responses from poisoning resolver caches. Without it, an attacker who controls the network path can redirect your domain to a malicious server before any HTTPS handshake happens. Most modern registrars (Cloudflare, Google Domains, Route 53) enable it with one toggle.

Source: ICANN / RFC 4033

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 593 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
31 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.
22 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
443 ms
Total Time Total request time from DNS lookup through full response.
593 ms

Connection waterfall

DNS Lookup 31 ms TCP Connect 17 ms TLS Handshake 22 ms Server Processing 374 ms Content Transfer 150 ms
A
CDN & Delivery
Cloudflare (DYNAMIC)
PASS
Cloudflare (DYNAMIC)
Info::
Site is served via Cloudflare CDN (edge: CDG)
Got: cf-ray: 9f0099faabb8e887-CDG
Info::
CDN cache status: DYNAMIC
CDN Detected: Cloudflare
Provider Cloudflare Cache Status DYNAMIC Evidence cf-ray: 9f0099faabb8e887-CDG
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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