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Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
88
GRADE
B
FIX
0
REVIEW
4
PASS
5
INFO
0
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
5 PASS 4 REVIEW
B
Crawlability
robots.txt present, no sitemap
REVIEW
robots.txt present, no sitemap
Info::
robots.txt is present
Got: 66 bytes
Info::
No sitemap.xml found
A sitemap helps search engines discover and index your pages more efficiently.
Info::
robots.txt does not reference a sitemap
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

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

Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

Why this matters

robots.txt omits Sitemap: directive — crawlers must fetch /sitemap.xml by convention; reliable but missing the explicit hint.

Source: sitemaps.org

robots.txt 200 OK
Size 66 B Sitemaps referenced 0 User-agents * Blocking No — crawling allowed
user-agent: *
disallow: /*/newsletter/existing/
disallow: /*/etc/

sitemap.xml No sitemap found

No sitemap found

Adding a sitemap helps search engines discover your pages.

C
URL Variants
Action
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
Warning::
HTTP→HTTPS redirect uses 302 instead of 301
Got: 302 temporary redirect Expected: 301 permanent redirect

www / non-www

200https://www.mozilla.org/
200https://mozilla.org/

Inconsistent — duplicate content risk

HTTP → HTTPS

302http://mozilla.org/ https://mozilla.org:443/

Use 301 (permanent) instead of 302 (temporary)

B
TLS Certificate Expiry & Recommendations
77 days until leaf cert expires — 4 issues to address
REVIEW

Certificate validity

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

Recommended actions

  • Extend HSTS max-age to at least 31536000 (1 year) to meet the preload list criteria
  • Add the preload directive and submit to hstspreload.org once max-age + includeSubDomains are in place
  • 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
CDN & Delivery
Google Cloud CDN
REVIEW
Google Cloud CDN
Info::
Site is served via Google Cloud CDN CDN
Got: via: 1.1 google
CDN Detected: Google Cloud CDN
Provider Google Cloud CDN Evidence via: 1.1 google
A+
DNS Records
1 A records, 27 ms lookup
PASS
1 A records, 27 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 35.190.14.201
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
Has 1 IPv6 (AAAA) record(s)
Got: 2600:1901:0:c197::
Info::
4 nameserver(s) configured
Got: ns4-64.akam.net, ns1-240.akam.net, ns7-66.akam.net, ns5-65.akam.net
Info::
4 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: 27 ms
Got: 27 ms
A35.190.14.201
AAAA2600:1901:0:c197::
CNAME
NSns4-64.akam.net, ns1-240.akam.net, ns7-66.akam.net, ns5-65.akam.net
MX
1 aspmx.l.google.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com
10 aspmx3.googlemail.com
TXT
google-site-verification=mU3ta-ZJga-aCNg7IlaRaGYK9sDOMagHRNGVW1FSJGE
MS=ms14343235
bzbkzkxj2ws8gvtw6hpssfy7lv9kym88
openai-domain-verification=dv-J6NgbJamHFrHSyNqlhElIX5K
yandex-verification
google-site-verification=Brpe3hQpo9FlGIHMtK4ViKL60L0G8VM16nXopwVDoEU
google-site-verification=E1vBHtOW-D9IlAj-pbRM-8PrOSiPDT48lrwRlW82ysw
rz8t7zvjv5frpfbjs3y5n6g5tkw7gt2q
google-site-verification=Ep3NdzNxaf8Vl48dniNneaqm7JcWUiy3GjKS0wx5zQw
google-site-verification=S3M17z96OKfZJ2dq7mYqQDfRWsEVjy3hdxaSyB72YPc
_zojr3c56nq36tokzhnj9crit28tiqly
anthropic-domain-verification-w5rph5=bZ2V4N0ps4oFSU6yrv4DfD6nA
SPF v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email include:_spf.mozilla.com...
google-site-verification=z68pON7CWSaZu_sBqDQofmDL19OVp3krGEjaDl7cSaU
google-site-verification=Lo_B34AJAe70BQVNF1Fo1zGGJudPmw9bLTnP2C8lV-s
ZOOM_verify_lGxIzL49Id7PipUgDgTd9K
CAALookup not available with standard resolver
Resolved in 27 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
Redirect Chain
1 redirect(s), 455 ms total
PASS
1 redirect(s), 455 ms total
Info::
Single redirect
Got: https://mozilla.org → https://www.mozilla.org/ (301)
Info::
WWW normalization redirect

https://mozilla.org

196 ms · HTTP/1.1

301

https://www.mozilla.org/

259 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://mozilla.org301196 msHTTP/1.1nginx
2https://www.mozilla.org/200259 msHTTP/1.1granian

See the visual redirect chain in the HTTP Probe tab →

A+
IPv6 Readiness
IPv6 reachable (17 ms)
PASS
IPv6 reachable (17 ms)
Info::
IPv6 is configured and reachable at 2600:1901:0:c197::
Got: 17 ms connect
IPv6 Ready
AAAA Records 2600:1901:0:c197:: Connection Reachable (17 ms)
A+
Domain Intelligence
mozilla.org — via MarkMonitor Inc., 28 years, 7 months old
PASS
mozilla.org — via MarkMonitor Inc., 28 years, 7 months old
Info::
Domain registered until Jan 23, 2027 (9 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: MarkMonitor 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

194 days

January 23, 2027

SSL certificate

77 days

Issued by Google Trust Services

Domain age

28 years, 7 months

Registered January 24, 1998

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Unknown

2600:1901:0:c197::

Registrar

MarkMonitor Inc.

Unlocked 4 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 MarkMonitor Inc.
Created January 24, 1998 (28 years, 7 months ago)
Expires January 23, 2027 (9 months)
Last Updated December 27, 2024
Name Servers ns1-240.akam.net, ns4-64.akam.net, ns5-65.akam.net, ns7-66.akam.net
DNSSEC Not enabled
Hosting
IP Address 2600:1901:0:c197::
Data source: rdap (0.6s)

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 213 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
17 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.
24 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
213 ms
Total Time Total request time from DNS lookup through full response.
213 ms

Connection waterfall

DNS Lookup 17 ms TCP Connect 17 ms TLS Handshake 24 ms Server Processing 155 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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