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Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
85
GRADE
B
FIX
2
REVIEW
4
PASS
3
INFO
0
Probed from Madrid, Spain
200 OK
Checks
9
3 PASS 4 REVIEW 2 FIX
F
HTTP Probe Timing
Action
Total 10406 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
FIX
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
70 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
110 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
114 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
10.41 s
Total Time Total request time from DNS lookup through full response.
10.41 s

Connection waterfall

DNS Lookup 70 ms TCP Connect 110 ms TLS Handshake 114 ms Server Processing 10.11 s Content Transfer 0 ms
D
CDN & Delivery
Action
No CDN detected
FIX
No CDN detected
Warning::
No CDN detected
A CDN can significantly improve load times for users around the world by caching content at edge nodes closer to them.
No CDN detected

Consider using a CDN to improve global delivery speed and reduce origin load.

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
Crawlability
no robots.txt, no sitemap
REVIEW
no robots.txt, no sitemap
Info::
No robots.txt found
robots.txt is optional but recommended. It tells search engine crawlers which pages to index.
Info::
No sitemap.xml found
A sitemap helps search engines discover and index your pages more efficiently.

robots.txt is optional but recommended. It tells search engine crawlers which pages to index.

Why this matters

No robots.txt — crawlers fetch /robots.txt and get 404; not breaking but means default crawl behavior with no directives or sitemap reference.

Learn more ▾

A minimal robots.txt with `User-agent: * / Allow: / / Sitemap: https://example.com/sitemap.xml` covers the basics. Without it, crawlers behave fine but lose the sitemap signal and can't be selectively blocked from crawl-traps.

Source: robotstxt.org

A sitemap helps search engines discover and index your pages more efficiently.

Why this matters

No sitemap.xml — Google relies on crawl-graph discovery alone, slowing indexing of deep or fresh URLs.

Learn more ▾

A sitemap accelerates Google's discovery of new and updated content. Most CMSes auto-generate one; static-site frameworks need a build-step plugin. Reference it from robots.txt and submit in Search Console to confirm Google can fetch it.

Source: sitemaps.org / Google Search Central

robots.txt No robots.txt found

No robots.txt found

This is fine for most sites — a missing robots.txt allows all crawling by default.

sitemap.xml No sitemap found

No sitemap found

Adding a sitemap helps search engines discover your pages.

B
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
REVIEW
www/non-www, trailing slash, HTTP→HTTPS
Critical::
HTTP version does not redirect to HTTPS
Got: HTTP 0 Expected: 301 redirect to HTTPS

www / non-www

https://www.tldp.org/
200https://tldp.org/

HTTP → HTTPS

http://tldp.org/

HTTP version does not redirect to HTTPS

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

Certificate validity

77
days left
0d 30d 60d 90d+

Recommended actions

  • Enable HSTS: Strict-Transport-Security: max-age=31536000; includeSubDomains
  • Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A+
DNS Records
2 A records, 73 ms lookup
PASS
2 A records, 73 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 37.27.115.158, 152.19.134.160
Info::
No IPv6 (AAAA) records
Info::
3 nameserver(s) configured
Got: b.ns.random.re, a.ns.random.re, c.ns.random.re
Info::
1 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: 73 ms
Got: 73 ms
A37.27.115.158, 152.19.134.160
AAAA—
CNAME—
NSb.ns.random.re, a.ns.random.re, c.ns.random.re
MX
1337 a.mx.it-zone.org
TXT
google-site-verification=TzJHmLwr-OQ5SzHZVFemmWrJOXtiVPvMAdqwrziVSmU
SPF v=spf1 v=spf1 mx a:a.mx.tldp.net ~all
CAALookup not available with standard resolver
Resolved in 73 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 redirect data available
PASS
No redirect data available
Info::
No redirect data captured
A+
Domain Intelligence
tldp.org — via NameSilo, LLC, 24 years, 5 months old, hosted on Hetzner
PASS
tldp.org — via NameSilo, LLC, 24 years, 5 months old, hosted on Hetzner
Info::
Domain registered until Mar 7, 2028 (1 years, 10 months remaining)
Info::
DNSSEC is enabled
Info::
Registrar: NameSilo, 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: Hetzner
Got: AS24940
Domain expiry

630 days

March 7, 2028

SSL certificate

77 days

Issued by Google Trust Services

Domain age

24 years, 5 months

Registered March 7, 2002

DNSSEC

Enabled

Protects against DNS spoofing

Hosting

Hetzner

ASN AS24940

37.27.115.158

Registrar

NameSilo, LLC

Unlocked 3 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 NameSilo, LLC
Created March 7, 2002 (24 years, 5 months ago)
Expires March 7, 2028 (1 years, 10 months)
Last Updated January 29, 2026
Name Servers c.ns.random.re, a.ns.random.re, b.ns.random.re
DNSSEC Enabled
Hosting
IP Address 37.27.115.158
ASN AS24940 (HETZNER-AS, DE)
Provider Hetzner
Data source: rdap (3.9s)

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

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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