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https://thinkific.com

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
83
GRADE
B
FIX
0
REVIEW
4
PASS
5
INFO
0
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
5 PASS 4 REVIEW
B
Redirect Chain
1 redirect(s), 1183 ms total
REVIEW
1 redirect(s), 1183 ms total
Info::
Single redirect
Got: https://thinkific.com → https://www.thinkific.com/ (301)
Info::
WWW normalization redirect
Warning::
Redirect overhead: 1183 ms total
Got: 1183 ms

https://thinkific.com

364 ms · HTTP/1.1

301

https://www.thinkific.com/

820 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://thinkific.com301364 msHTTP/1.1cloudflare
2https://www.thinkific.com/200820 msHTTP/1.1cloudflare

See the visual redirect chain in the HTTP Probe tab →

C
IPv6 Readiness
Action
No IPv6 support
REVIEW
No IPv6 support
Info::
No IPv6 (AAAA) records found
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No IPv6 Support
About 40% of internet users have IPv6. Consider adding AAAA records.

IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.

Why this matters

No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.

Source: Google IPv6 stats

B
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
REVIEW
www/non-www, trailing slash, HTTP→HTTPS
Critical::
Both www and non-www versions serve content
Got: Both variants return 200 Expected: One variant 301-redirects to the other
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

200https://www.thinkific.com/
200https://thinkific.com/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://thinkific.com/ https://www.thinkific.com/

Consistent

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

Certificate validity

69
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
A+
DNS Records
1 A records, 105 ms lookup
PASS
1 A records, 105 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 162.159.135.42
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
No IPv6 (AAAA) records
Info::
2 nameserver(s) configured
Got: memphis.ns.cloudflare.com, lindsey.ns.cloudflare.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: 105 ms
Got: 105 ms
A162.159.135.42
AAAA
CNAME
NSmemphis.ns.cloudflare.com, lindsey.ns.cloudflare.com
MX
10 ca-smtp-inbound-1.mimecast.com
10 ca-smtp-inbound-2.mimecast.com
TXT
mixpanel-domain-verify=e9dc93b0-6e8f-4058-8c43-255293eb1899
stripe-verification=94c6002c6d4819229e4de2528d648697c77f43c66541cd17ef08ea2c8dd4...
stripe-verification=7969af30dfd7e3a69636c0d8d08d5011ebf05e6fd9eee6dfa07f75eff5a1...
google-site-verification=-zqXGL4Yw98i4ge0wVccJ41dhqR4ncEEGfpjCIDWq-Q
stripe-verification=0f591eccfda72124590e2f0f0c9b6bd8dc37ce03a7f16fb614070c10b80a...
google-site-verification=HCggDgFBKaL7EhlCeS8cSPQHTisFgLlm0mvBR-BLqYs
anthropic-domain-verification-1kww8r=IMnB8N42ytLbj11TImbx31DZl
zapier-domain-verification-challenge=cd11c05c-5fe2-4aaf-8105-5c3b8f293cba
hubspot-developer-verification=MTA2NmFkZTUtMzNhMC00NjEyLWE0YjctZTY3YjdmNGVhZjM0
mgverify=0cbc0ee2f375425b8a226a122700192eb2aa5862e20c2c8a6e83b41acf167910
stripe-verification=79573935b1e7e55f563d2b379b864af4247c6ea1b484d45cd9a15e8e0a03...
cursor-domain-verification-pjpycz=oLOdsiCSINcnOpSzNE0HAMVos
slack-domain-verification=cmLZ5KSyBuLhjg0eIxkL5MEecyQrK5xk9UU46ZNY
google-site-verification=Vj64GOHOBgmOVYc7l_L121VvUQISualj_3NOGzU4734
ca3-892e52761ee2442aacf648e45ba02cec
stripe-verification=3912b974376d420e276be1769b4a4afc86910e8c24890a8dca330993c227...
ca3-0e79582e49c341f6a7c6c518c02e4f92
apple-domain-verification=wNPvGBCj02VaUYS0
google-site-verification=_Nb74SvlYZiQUH3kXBu54BdDQtli7SDY0Jspdbr-UrI
ZOOM_verify_ZbY5QZ4YbOrmWJ6lq1VuPg
SPF v=spf1 a mx include:_spf.google.com include:mail.zendesk.com include:kinsta-flat...
stripe-verification=d347622ec3730d985a205573247029988811abe0db484444a7058ccc632f...
stripe-verification=fccf8ad5b37c0810c0b5e474b9e6b766cdb332fd4f6ee70304026c9cc4a9...
google-site-verification=a-g6ytqiblxcBDwroQVNy4o4cEwrPkLnyuiSynZ1Upc
miro-verification=f9b8fc18ef07dde4b6aad3c864454a1121693a13
atlassian-domain-verification=nIhkyfCe6slV5C/WasRqHuAP0mukWzBMOKwwzZauCMUwnDo8Rt...
ca3-60fcf7d4fca2430b96e7615542fdf9bc
onetrust-domain-verification=886468f9f6de4ce1a841cc21ecbbcc8c
stripe-verification=a06bb9be52c15fd5cb25eae3f04d2500574575899382dab6dc317d240503...
status-page-domain-verification=pyctf37sgc01
MS=78777F3F398BF16F86EE7A11109611A320E95E0F
CAALookup not available with standard resolver
Resolved in 105 ms

Multiple A records provide failover if one server goes down.

Why this matters

Single A record means a single point of failure — if that IP goes down, your site is unreachable until DNS TTL expires.

Learn more

Add multiple A records for round-robin failover, or use a managed DNS provider with health-checked failover (Route 53, Cloudflare, NS1). Short TTL (60-300s) lets clients recover faster on outages.

Source: SRE practice / DNS architecture

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+
Crawlability
robots.txt present, sitemap with 9 URLs
PASS
robots.txt present, sitemap with 9 URLs
Info::
robots.txt is present
Got: 283 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 9 entries
Info::
Sitemap index with 9 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 283 B Sitemaps referenced 1 User-agents * Blocking No — crawling allowed
# START YOAST BLOCK

# ---------------------------

User-agent: *

Disallow: /?s=

Disallow: /page/*/?s=

Disallow: /search/

Disallow: /wp-json/

Disallow: /?rest_route=


Sitemap: http://newthinkific.kinsta.cloud/sitemap_index.xml

# ---------------------------

# END YOAST BLOCK
A+
Domain Intelligence
thinkific.com — via GoDaddy.com, LLC, 14 years, 3 months old, hosted on Cloudflare
PASS
thinkific.com — via GoDaddy.com, LLC, 14 years, 3 months old, hosted on Cloudflare
Info::
Domain registered until Mar 30, 2027 (11 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: GoDaddy.com, LLC
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

256 days

March 30, 2027

SSL certificate

69 days

Issued by Let's Encrypt

Domain age

14 years, 3 months

Registered March 30, 2012

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Cloudflare

ASN AS13335

162.159.135.42

Registrar

GoDaddy.com, LLC

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 GoDaddy.com, LLC
Created March 30, 2012 (14 years, 3 months ago)
Expires March 30, 2027 (11 months)
Last Updated March 31, 2026
Name Servers lindsey.ns.cloudflare.com, memphis.ns.cloudflare.com
DNSSEC Not enabled
Hosting
IP Address 162.159.135.42
ASN AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
Provider Cloudflare
Data source: rdap (0.2s)

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 396 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
30 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.
396 ms
Total Time Total request time from DNS lookup through full response.
396 ms

Connection waterfall

DNS Lookup 30 ms TCP Connect 17 ms TLS Handshake 22 ms Server Processing 327 ms Content Transfer 0 ms
A
CDN & Delivery
Cloudflare (DYNAMIC)
PASS
Cloudflare (DYNAMIC)
Info::
Site is served via Cloudflare CDN (edge: CDG)
Got: cf-ray: 9effbad96d77d0ac-CDG
Info::
CDN cache status: DYNAMIC
CDN Detected: Cloudflare
Provider Cloudflare Cache Status DYNAMIC Evidence cf-ray: 9effbad96d77d0ac-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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