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https://clevelandclinic.org

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
93
GRADE
A
FIX
0
REVIEW
3
PASS
6
INFO
0
Probed from Madrid, Spain
302 Found
Checks
9
6 PASS 3 REVIEW
B
Redirect Chain
2 redirect(s), 532 ms total
REVIEW
2 redirect(s), 532 ms total
Warning::
2 redirects before reaching final URL
Each redirect adds latency. Try to minimize the chain to 1 hop.
Info::
WWW normalization redirect
Info::
Uses 302 (temporary) redirect
If permanent, use 301 instead.
Got: https://clevelandclinic.org
Info::
Redirect overhead: 532 ms total
Got: 532 ms
Info::
Cross-domain redirect detected

https://clevelandclinic.org

66 ms · HTTP/1.1

302

https://www.clevelandclinic.org/

113 ms · HTTP/1.1

302

https://my.clevelandclinic.org/

353 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://clevelandclinic.org30266 msHTTP/1.1cloudflare
2https://www.clevelandclinic.org/302113 msHTTP/1.1cloudflare
3https://my.clevelandclinic.org/200353 msHTTP/1.1cloudflare

See the visual redirect chain in the HTTP Probe tab →

Each redirect adds latency. Try to minimize the chain to 1 hop.

Why this matters

Redirect chain — each hop adds latency; combine into one redirect where possible.

Source: Google Search Central / web.dev

If permanent, use 301 instead.

Why this matters

302 (Found) is for genuinely temporary redirects — if this redirect is permanent, switch to 301 to preserve SEO equity.

Learn more

Search engines treat 302 as temporary, keeping the original URL indexed and not transferring full link equity to the destination. Use 301 (Moved Permanently) for permanent redirects (HTTP→HTTPS, www-vs-non-www, URL restructures).

Source: Google Search Central

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

Certificate validity

88
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
B
CDN & Delivery
Cloudflare
REVIEW
Cloudflare
Info::
Site is served via Cloudflare CDN (edge: CDG)
Got: cf-ray: 9efea7a16e26b868-CDG
CDN Detected: Cloudflare
Provider Cloudflare Evidence cf-ray: 9efea7a16e26b868-CDG
A+
DNS Records
2 A records, 61 ms lookup
PASS
2 A records, 61 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 104.18.32.216, 172.64.155.40
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2606:4700:4402::6812:20d8, 2a06:98c1:3103::ac40:9b28
Info::
2 nameserver(s) configured
Got: bob.ns.cloudflare.com, etta.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: 61 ms
Got: 61 ms
A104.18.32.216, 172.64.155.40
AAAA2606:4700:4402::6812:20d8, 2a06:98c1:3103::ac40:9b28
CNAME
NSbob.ns.cloudflare.com, etta.ns.cloudflare.com
MX
10 us-smtp-inbound-2.mimecast.com
10 us-smtp-inbound-1.mimecast.com
TXT
d365mktkey=3gwph51api0dfr21luukz4df7
google-site-verification=01A3wN51E8DU33ZpZlgHePSdKCPTXnwsLMFMkPzRg_I
d365mktkey=bdnrgug1lm2owwuuv3wofe3j
google-site-verification=jiByQXocollPQ2zxJrg_u2ViUjRcBsaxy8bc0-M8EWQ
google-site-verification=JbmfgQrxaJNkFtbuyBrETJRlUeAE8CB-XOn9L7N9Zig
google-site-verification=YAkTaotFYE_Y8NGl0OVXrzJtVwgIy83UPdnPvLDSupI
7f576db0-d122-4e47-8a99-2393581c66e5
MS=ms25572796
facebook-domain-verification=3lrbkbzm0s2x1t20o5zbm9e8tlaqd5
d365mktkey=69fhnrl1ynapps6shvxrngv3m
d365mktkey=6vnv94i0t2irkvtbnd7t9qlg5
vZDYsw8mvEaAKUOOQV0AiSUAKcumtLY8gnaetoVvFfDatRSItRpXDv8Tpnr7Zk9WAKdfMNfvvcMRUWA6...
Cyber Security. google-site-verification=JbmfgQrxaJNkFtbuyBrETJRlUeAE8CB-XOn9L7N...
SPF v=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com inc...
d365mktkey=28sa7bafpe2de8vpiioj7eyhf
CAALookup not available with standard resolver
Resolved in 61 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+
IPv6 Readiness
IPv6 reachable (17 ms)
PASS
IPv6 reachable (17 ms)
Info::
IPv6 is configured and reachable at 2606:4700:4402::6812:20d8, 2a06:98c1:3103::ac40:9b28
Got: 17 ms connect
IPv6 Ready
AAAA Records 2606:4700:4402::6812:20d8, 2a06:98c1:3103::ac40:9b28 Connection Reachable (17 ms)
A+
Crawlability
robots.txt present, sitemap with 2 URLs
PASS
robots.txt present, sitemap with 2 URLs
Info::
robots.txt is present
Got: 1064 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 2 entries
Info::
Sitemap index with 2 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 1064 B Sitemaps referenced 1 User-agents AmazonAdBot, * Blocking No — crawling allowed
# Robots.txt file CCF
# Updated 11/11/2025

User-agent: AmazonAdBot
# Only allow crawling of areas where we show advertisements
Allow: /health/
Allow: /watch/

Disallow: /
 
# --- Default directives for all other crawlers ---
User-agent: *
Disallow:
Crawl-delay: 10

Disallow: /Search
Disallow: /search
Disallow: /*/Search
Disallow: /*/search

Disallow: /*?date=*
Disallow: /*?q=*
Disallow: /*?view=*

Disallow: /ccf/media/files/*guide.pdf
Disallow: /cache/clearcache/
Disallow: /atoz/healthinformationletterstatus/
Disallow: /atoz/healthinformationpages/
Disallow: /atoz/healthinformationribbonlinkvisibility/
Disallow: /atoz/institutesdepartmentsletterstatus/
Disallow: /atoz/institutesdepartmentspages/
Disallow: /ribbon/locationspecialtylists/
Disallow: /provider/physicianratings/
Disallow: /provider/image/
Disallow: /video/panel/
Disallow: /clinicaltrial/jsonresults/
Disallow: /patientstory/jsonresults/
Disallow: /patientstory/forsearchindex/
Disallow: /location/waittimes/
Disallow: /treatment-guides/

Sitemap: https://my.clevelandclinic.org/sitemap.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 2 entries Valid XML Yes
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

302https://www.clevelandclinic.org/
200https://clevelandclinic.org/

Preferred variant: non-www

HTTP → HTTPS

302http://clevelandclinic.org/ https://www.clevelandclinic.org/

Use 301 (permanent) instead of 302 (temporary)

A+
Domain Intelligence
clevelandclinic.org — via GoDaddy Corporate Domains, LLC, 28 years, 8 months old
PASS
clevelandclinic.org — via GoDaddy Corporate Domains, LLC, 28 years, 8 months old
Info::
Domain registered until Jan 7, 2027 (8 months remaining)
Info::
DNSSEC is enabled
Info::
Registrar: GoDaddy Corporate Domains, 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.
Domain expiry

205 days

January 7, 2027

SSL certificate

88 days

Issued by Google Trust Services

Domain age

28 years, 8 months

Registered January 8, 1998

DNSSEC

Enabled

Protects against DNS spoofing

Hosting

Unknown

2606:4700:4402::6812:20d8

Registrar

GoDaddy Corporate Domains, LLC

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 GoDaddy Corporate Domains, LLC
Created January 8, 1998 (28 years, 8 months ago)
Expires January 7, 2027 (8 months)
Last Updated December 13, 2025
Name Servers bob.ns.cloudflare.com, etta.ns.cloudflare.com
DNSSEC Enabled
Hosting
IP Address 2606:4700:4402::6812:20d8
Data source: rdap (0.6s)

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 107 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
45 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.
23 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
107 ms
Total Time Total request time from DNS lookup through full response.
107 ms

Connection waterfall

DNS Lookup 45 ms TCP Connect 17 ms TLS Handshake 23 ms Server Processing 23 ms Content Transfer 0 ms
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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