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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
1
REVIEW
3
PASS
4
INFO
1
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
4 PASS 3 REVIEW 1 FIX
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
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 301-redirects to HTTPS

www / non-www

200https://www.poetryfoundation.org/
200https://poetryfoundation.org/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://poetryfoundation.org/ → https://www.poetryfoundation.org:443/

Consistent

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

Certificate validity

51
days left
0d 30d 60d 90d+

Recommended actions

  • Enable HSTS: Strict-Transport-Security: max-age=31536000; includeSubDomains
  • 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
A+
DNS Records
3 A records, 38 ms lookup
PASS
3 A records, 38 ms lookup
Info::
Resolves to 3 IPv4 address(es)
Got: 18.188.81.99, 3.136.61.148, 3.128.238.151
Info::
No IPv6 (AAAA) records
Info::
4 nameserver(s) configured
Got: ns-1321.awsdns-37.org, ns-824.awsdns-39.net, ns-165.awsdns-20.com, ns-1755.awsdns-27.co.uk
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::
SPF record present in TXT
Info::
DNS resolution time: 38 ms
Got: 38 ms
A18.188.81.99, 3.136.61.148, 3.128.238.151
AAAA—
CNAME—
NSns-1321.awsdns-37.org, ns-824.awsdns-39.net, ns-165.awsdns-20.com, ns-1755.awsdns-27.co.uk
MX
1 aspmx.l.google.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com
10 alt4.aspmx.l.google.com
10 alt3.aspmx.l.google.com
TXT
google-site-verification=olQtGIpSFT1Y5GdAxgSXi_p3l1RH2L9qfYmxFTbdWls
google-site-verification=4xFMdUDqRnAFruznet6_KIrelXUko-ciSliz09zOOsg
SPF v=spf1 include:_spf.google.com include:mailgun.org include:servers.mcsv.net -all
bw=j6Kd57nORwxoXMWVvcMgMSKzv7ziiu7TXppCAuaR6FeO
asv=98955e3c11a7baa9d0e6c14305c8c69a
facebook-domain-verification=i9rzaba80zh4tl9c9h9v09z9v1w9or
CAALookup not available with standard resolver
Resolved in 38 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
1 redirect(s), 526 ms total
PASS
1 redirect(s), 526 ms total
Info::
Single redirect
Got: https://poetryfoundation.org → https://www.poetryfoundation.org:443/ (301)
Info::
WWW normalization redirect
Info::
Redirect overhead: 526 ms total
Got: 526 ms

https://poetryfoundation.org

357 ms · HTTP/1.1

301

https://www.poetryfoundation.org:443/

169 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://poetryfoundation.org301357 msHTTP/1.1awselb/2.0
2https://www.poetryfoundation.org:443/200169 msHTTP/1.1cloudflare

See the visual redirect chain in the HTTP Probe tab →

A+
Crawlability
robots.txt present, sitemap with 40 URLs
PASS
robots.txt present, sitemap with 40 URLs
Info::
robots.txt is present
Got: 223 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 40 entries
Info::
Sitemap index with 40 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 223 B Sitemaps referenced 1 User-agents * Blocking No — crawling allowed
sitemap: https://www.poetryfoundation.org/sitemap_index.xml
Crawl-delay: 5

User-agent: *
Disallow: /cpresources/
Disallow: /vendor/
Disallow: /.env
Disallow: /_nuxt/
Disallow: /proxy/
Disallow: /search
Disallow: /*/browse
sitemap.xml 200 OK
Type Sitemap Index URLs 40 entries Valid XML Yes
Child Sitemaps:
A+
HTTP Probe Timing
Total 374 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
27 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
115 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
117 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
375 ms
Total Time Total request time from DNS lookup through full response.
375 ms

Connection waterfall

DNS Lookup 27 ms TCP Connect 115 ms TLS Handshake 117 ms Server Processing 115 ms Content Transfer 0 ms
Domain Intelligence
Domain intelligence data not available
INFO
Domain intelligence data not available

RDAP and WHOIS lookup both failed

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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