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Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
90
GRADE
A
FIX
0
REVIEW
4
PASS
5
INFO
0
Probed from Madrid, Spain
403 Forbidden
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: 1738 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 1738 B Sitemaps referenced 0 User-agents Amazonbot, Applebot-Extended, Bytespider, ClaudeBot, CloudflareBrowserRenderingCrawler, Google-Extended, meta-externalagent, *, CCBot, GPTBot Blocking No — crawling allowed
# As a condition of accessing this website, you agree to abide by the following
# content signals:

# (a)  If a Content-Signal = yes, you may collect content for the corresponding
#      use.
# (b)  If a Content-Signal = no, you may not collect content for the
#      corresponding use.
# (c)  If the website operator does not include a Content-Signal for a
#      corresponding use, the website operator neither grants nor restricts
#      permission via Content-Signal with respect to the corresponding use.

# The content signals and their meanings are:

# search:   building a search index and providing search results (e.g., returning
#           hyperlinks and short excerpts from your website's contents). Search does not
#           include providing AI-generated search summaries.
# ai-input: inputting content into one or more AI models (e.g., retrieval
#           augmented generation, grounding, or other real-time taking of content for
#           generative AI search answers).
# ai-train: training or fine-tuning AI models.

# ANY RESTRICTIONS EXPRESSED VIA CONTENT SIGNALS ARE EXPRESS RESERVATIONS OF
# RIGHTS UNDER ARTICLE 4 OF THE EUROPEAN UNION DIRECTIVE 2019/790 ON COPYRIGHT
# AND RELATED RIGHTS IN THE DIGITAL SINGLE MARKET.

# BEGIN Cloudflare Managed content

User-agent: *
Content-Signal: search=yes,ai-train=no
Allow: /

User-agent: Amazonbot
Disallow: /

User-agent: Applebot-Extended
Disallow: /

User-agent: Bytespider
Disallow: /

User-agent: CCBot
Disallow: /

User-agent: ClaudeBot
Disallow: /

User-agent: CloudflareBrowserRenderingCrawler
Disallow: /

User-agent: Google-Extended
Disallow: /

User-agent: GPTBot
Disallow: /

User-agent: meta-externalagent
Disallow: /

# END Cloudflare Managed Content


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 403 Expected: 301 redirect to HTTPS

www / non-www

403https://www.pubpub.org/
200https://pubpub.org/

HTTP → HTTPS

403http://pubpub.org/

HTTP version does not redirect to HTTPS

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

Certificate validity

78
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
B
CDN & Delivery
Cloudflare
REVIEW
Cloudflare
Info::
Site is served via Cloudflare CDN (edge: CDG)
Got: cf-ray: 9f0882ee4c96d0aa-CDG
CDN Detected: Cloudflare
Provider Cloudflare Evidence cf-ray: 9f0882ee4c96d0aa-CDG
A+
DNS Records
2 A records, 41 ms lookup
PASS
2 A records, 41 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 172.66.148.67, 104.20.27.198
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2606:4700:10::ac42:9443, 2606:4700:10::6814:1bc6
Info::
2 nameserver(s) configured
Got: vin.ns.cloudflare.com, val.ns.cloudflare.com
Info::
5 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::
No SPF record found in TXT records
SPF helps prevent email spoofing. Add a TXT record starting with 'v=spf1'.
Info::
DNS resolution time: 41 ms
Got: 41 ms
A172.66.148.67, 104.20.27.198
AAAA2606:4700:10::ac42:9443, 2606:4700:10::6814:1bc6
CNAME
NSvin.ns.cloudflare.com, val.ns.cloudflare.com
MX
1 aspmx.l.google.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com
10 aspmx3.googlemail.com
10 aspmx2.googlemail.com
TXT
google-site-verification=RsEAGVRr9eMWa-5-NWBm_YlvduM5SOb5Mx32MNDoG7A
google-site-verification=KG-P0O69fjw2OqxUWj2a1PotFxNMTph3BHvXSL8bjCk
CAALookup not available with standard resolver
Resolved in 41 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.

SPF helps prevent email spoofing. Add a TXT record starting with 'v=spf1'.

Why this matters

Without SPF, receiving servers can't validate sending IPs — your domain is easier to spoof in phishing.

Learn more

SPF complements DMARC. Both should be published. SPF records list authorized sending IPs (e.g., `v=spf1 include:_spf.google.com ~all` for Google Workspace). After publishing, verify in Google Postmaster Tools or mxtoolbox.

Source: RFC 7208 (SPF)

A
Redirect Chain
1 redirect(s), 184 ms total
PASS
1 redirect(s), 184 ms total
Info::
Single redirect
Got: https://pubpub.org → https://www.pubpub.org/ (301)
Info::
WWW normalization redirect

https://pubpub.org

59 ms · HTTP/1.1

301

https://www.pubpub.org/

125 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://pubpub.org30159 msHTTP/1.1cloudflare
2https://www.pubpub.org/403125 msHTTP/1.1cloudflare

See the visual redirect chain in the HTTP Probe tab →

A+
IPv6 Readiness
IPv6 reachable (16 ms)
PASS
IPv6 reachable (16 ms)
Info::
IPv6 is configured and reachable at 2606:4700:10::ac42:9443, 2606:4700:10::6814:1bc6
Got: 16 ms connect
IPv6 Ready
AAAA Records 2606:4700:10::ac42:9443, 2606:4700:10::6814:1bc6 Connection Reachable (16 ms)
A+
Domain Intelligence
pubpub.org — via Porkbun LLC, 11 years, 3 months old
PASS
pubpub.org — via Porkbun LLC, 11 years, 3 months old
Info::
Domain registered until Mar 20, 2030 (3 years, 11 months remaining)
Info::
DNSSEC is enabled
Info::
Registrar: Porkbun 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

1347 days

March 20, 2030

SSL certificate

78 days

Issued by Let's Encrypt

Domain age

11 years, 3 months

Registered March 20, 2015

DNSSEC

Enabled

Protects against DNS spoofing

Hosting

Unknown

2606:4700:10::ac42:9443

Registrar

Porkbun 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 Porkbun LLC
Created March 20, 2015 (11 years, 3 months ago)
Expires March 20, 2030 (3 years, 11 months)
Last Updated December 20, 2025
Name Servers val.ns.cloudflare.com, vin.ns.cloudflare.com
DNSSEC Enabled
Hosting
IP Address 2606:4700:10::ac42:9443
Data source: rdap (0.4s)

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 126 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
68 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.
21 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
127 ms
Total Time Total request time from DNS lookup through full response.
127 ms

Connection waterfall

DNS Lookup 68 ms TCP Connect 17 ms TLS Handshake 21 ms Server Processing 21 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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