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https://serenis.it

Infrastructure

· 17 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
87
GRADE
B
FIX
0
REVIEW
7
PASS
10
INFO
0
Probed from Santa Clara, United States
301 Moved Permanently
Checks
17
10 PASS 7 REVIEW
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 13.249.74.88 does not match any cert SAN: server-13-249-74-88.sfo53.r.cloudfront.net
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 13.249.74.126 does not match any cert SAN: server-13-249-74-126.sfo53.r.cloudfront.net
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 13.249.74.29 does not match any cert SAN: server-13-249-74-29.sfo53.r.cloudfront.net
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 13.249.74.67 does not match any cert SAN: server-13-249-74-67.sfo53.r.cloudfront.net
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.
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 redirects to HTTPS permanently
Got: HTTP 301

www / non-www

200https://www.serenis.it/
200https://serenis.it/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://serenis.it/ → https://serenis.it/

Consistent

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

Certificate validity

95
days left
0d 30d 60d 90d+

Recommended actions

  • Submit your domain to hstspreload.org to be added to the Chrome preload list
  • 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
4 A records, 22 ms lookup
PASS
4 A records, 22 ms lookup
Info::
Resolves to 4 IPv4 address(es)
Got: 13.249.74.88, 13.249.74.126, 13.249.74.29, 13.249.74.67
Info::
No IPv6 (AAAA) records
Info::
4 nameserver(s) configured
Got: ns-1065.awsdns-05.org, ns-1627.awsdns-11.co.uk, ns-175.awsdns-21.com, ns-942.awsdns-53.net
Info::
5 mail exchanger(s) configured
Info::
SPF record present in TXT
Info::
DNS resolution time: 22 ms
Got: 22 ms
A13.249.74.88, 13.249.74.126, 13.249.74.29, 13.249.74.67
AAAA—
CNAME—
NSns-1065.awsdns-05.org, ns-1627.awsdns-11.co.uk, ns-175.awsdns-21.com, ns-942.awsdns-53.net
MX
1 aspmx.l.google.com
5 alt2.aspmx.l.google.com
5 alt1.aspmx.l.google.com
10 alt3.aspmx.l.google.com
10 alt4.aspmx.l.google.com
TXT
cursor-domain-verification-0pwddy=Gs7HKKGyJr1Q56aQcBCIYiIeT
cuttly-verification-site-6afb6835f15c1c019b7823c18bd9ebbf52511dc7-149c0b3ee0
facebook-domain-verification=fk49ofy2vb894jsm1h7fqrp5nv7rrl
google-site-verification=0kVfi2OJL49d_CND76vF01tKiMEu3ZiF6UR323VcCzw
google-site-verification=B2mNvYb8_JOTBYObgHq7OQ4vt6tPGLxlZ9nML_MWMyg
google-site-verification=sGkCwrCVjnolEVe8qc3ppH2mfoQyA2sneL01k45_-Yg
google-site-verification=sMeow7_gMiu8GvaKaejjg-pxBAQHvIzxYVfLx3WXfCw
SPF v=spf1 include:emsd1.com include:_spf.google.com ~all
CAALookup not available with standard resolver
Resolved in 22 ms
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 12ms across 3 resolvers (spread 11ms)
PASS
Mean 12ms across 3 resolvers (spread 11ms)
Info::
Quad9: 6ms
Got: 6ms via 9.9.9.9:53
Info::
Google: 15ms
Got: 15ms via 8.8.8.8:53
Info::
Cloudflare: 17ms
Got: 17ms via 1.1.1.1:53
A
Redirect Chain
1 redirect(s), 611 ms total
PASS
1 redirect(s), 611 ms total
Info::
Single redirect
Got: https://serenis.it → https://www.serenis.it/ (301)
Info::
WWW normalization redirect
Info::
Redirect overhead: 611 ms total
Got: 611 ms

https://serenis.it

177 ms · HTTP/1.1

301

https://www.serenis.it/

434 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://serenis.it301177 msHTTP/1.1nginx/1.29.8
2https://www.serenis.it/200434 msHTTP/1.1nginx/1.29.8

See the visual redirect chain in the HTTP Probe tab →

A+
Crawlability
robots.txt present, sitemap with 90 URLs
PASS
robots.txt present, sitemap with 90 URLs
Info::
robots.txt is present
Got: 285 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 90 entries
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 285 B Sitemaps referenced 4 User-agents * Blocking No — crawling allowed
User-agent: *
Disallow: /argomenti
Disallow: /tag
Disallow: /wp
Allow: /wp-content

Sitemap: https://www.serenis.it/sitemap.xml
Sitemap: https://www.serenis.it/psicologo/sitemap.xml
Sitemap: https://www.serenis.it/blog-assets/sitemap.xml
Sitemap: https://www.serenis.it/pro/sitemap.xml
sitemap.xml 200 OK
Type URL Set URLs 90 entries Valid XML Yes
Sample URLs:
A+
Domain Intelligence
serenis.it — via GANDI-REG, 5 years, 5 months old, hosted on AWS
PASS
serenis.it — via GANDI-REG, 5 years, 5 months old, hosted on AWS
Info::
Domain registered until Mar 31, 2027 (7 months remaining)
Info::
Registrar: GANDI-REG
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: AWS
Got: AS16509
Domain expiry

216 days

March 31, 2027

SSL certificate

95 days

Issued by Amazon

Domain age

5 years, 5 months

Registered March 31, 2021

DNSSEC

Status unknown

Protects against DNS spoofing

Hosting

AWS

ASN AS16509

13.249.74.67

Registrar

GANDI-REG

Unlocked 4 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 GANDI-REG
Created March 31, 2021 (5 years, 5 months ago)
Expires March 31, 2027 (7 months)
Last Updated April 16, 2026
Name Servers ns-942.awsdns-53.net, ns-1627.awsdns-11.co.uk, ns-175.awsdns-21.com, ns-1065.awsdns-05.org
Registrant Serenis Health Srl
Hosting
IP Address 13.249.74.67
ASN AS16509 (AMAZON-02 - Amazon.com, Inc., US)
Provider AWS
Data source: whois (0.7s)

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

Connection waterfall

DNS Lookup 8 ms TCP Connect 3 ms TLS Handshake 7 ms Server Processing 324 ms Content Transfer 0 ms
A
CDN & Delivery
AWS CloudFront (Miss from cloudfront)
PASS
AWS CloudFront (Miss from cloudfront)
Info::
Site is served via AWS CloudFront CDN (edge: SFO53-P8)
Got: x-amz-cf-id: b_WJtio2FGW5MYesDURTGWunZ0wHDRfgGEMJtHnth_HIPkBUGHlh9A==
Info::
CDN cache status: Miss from cloudfront
CDN Detected: AWS CloudFront
Provider AWS CloudFront Cache Status Miss from cloudfront Evidence x-amz-cf-id: b_WJtio2FGW5MYesDURTGWunZ0wHDRfgGEMJtHnth_HIPkBUGHlh9A==
A+
CDN Cache Observability
Cache state: MISS
PASS
Cache state: MISS
Info::
CDN cache state observable via 1 header(s)
Got: x-cache=Miss from cloudfront
A+
Health Check Endpoint
Health endpoint at https://serenis.it/health (HTTP 200)
PASS
Health endpoint at https://serenis.it/health (HTTP 200)
Info::
Public health endpoint at https://serenis.it/health
Got: https://serenis.it/health
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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