Skip to content
https://oclc.org

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
81
GRADE
B
FIX
0
REVIEW
4
PASS
4
INFO
1
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
4 PASS 4 REVIEW
B
Redirect Chain
1 redirect(s), 1105 ms total
REVIEW
1 redirect(s), 1105 ms total
Info::
Single redirect
Got: https://oclc.org → https://www.oclc.org/ (301)
Info::
WWW normalization redirect
Warning::
Redirect overhead: 1105 ms total
Got: 1105 ms

https://oclc.org

586 ms · HTTP/1.1

301

https://www.oclc.org/

518 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://oclc.org301586 msHTTP/1.1cloudflare
2https://www.oclc.org/200518 msHTTP/1.1cloudflare

See the visual redirect chain in the HTTP Probe tab →

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.oclc.org/
200https://oclc.org/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://oclc.org/ → https://www.oclc.org/

Consistent

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

Certificate validity

38
days left
0d 30d 60d 90d+

Recommended actions

  • Add includeSubDomains to the HSTS directive
  • 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
2 A records, 92 ms lookup
PASS
2 A records, 92 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 172.64.151.47, 104.18.36.209
Info::
No IPv6 (AAAA) records
Info::
2 nameserver(s) configured
Got: cfns2.oclc.org, cfns1.oclc.org
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: 92 ms
Got: 92 ms
A172.64.151.47, 104.18.36.209
AAAA—
CNAME—
NScfns2.oclc.org, cfns1.oclc.org
MX
0 oclc-org.mail.protection.outlook.com
TXT
kxzjkp2gpp4m9ksc3g2w93zncfmxrqqc
cursor-domain-verification-74mxzc=2BdrOniX4aVBEAO5kUqUQJEro
_wa1wnqkn9294zs45fp9ae3di78ur99s
MS=ms14172445
cisco-ci-domain-verification=193d59d1fcf26c225826064def316702ae84c39a46f9e8c72e7...
facebook-domain-verification=affk3o8bfh6le9cvvx7xwmswo0e5mr
jamf-site-verification=8coQPxUyg9bKD0K0pFC7rg
google-site-verification=bABoFwlSxS-DeLT6Yy1LF0Tj-DMp1HYl7NDjedawKkk
4256995c8966449983294ebad4a2b9a3
kqj6x382gt09g0br7nt188s63t6547cd
vmware-cloud-verification-2edc48b8-3355-413a-ae8d-5abb4ed797b1
google-site-verification=9ez_4y1HH-bpcW7MI7Ghldcrz-aKbIJt2zVtAWtdwdg
_gm8xalcyzdgxc17m2f9m313bhwzrzs8
pardot862361=00087ad84bbb7b1dae43c8a316056463d78d44b0f7c9d8bb804cdb22d63ad7a5
flqjbrrnz36dcmsl573bw7379vjk4c8j
miro-verification=bee7f227c122212780382f43c836cfc0076ca9a4
XWSh/LUnGSIwEcBGVq4pEcnhRMHmp8pU+dK5gZTTliCaD+pVsQ6KkqmrX6/GkgQ8xi1d3TZBMiTYY4fy...
docker-verification=be2395ce-cb32-4493-9400-7fcc1f89449e
onetrust-domain-verification=a65e9af06f9b46a4b2ef5f739794e0ee
SPF v=spf1 redirect=oclc.org.hosted.spf-report.com
pardot_47682_*=be35e87f6f3563f2dc8256002f92ffeaecefd1ee3bb91c605e2d153f221184ac
cursor-domain-verification-etw3hq=48COaAkQIcy7hfIr1ApQ30VKF
canva-site-verification=8s_lRxEJWmxVPVPTmf6IBA
bw=CukLOkJTGnAJpc0fVvMnBTwuvnuaLbTalKy9voQKmqMh
google-site-verification=ZmWQInmTpJ3pK6F-k10owgaWJJR7MnN6FV8KRyL4qY0
google-site-verification=xAm4mIb2wXpsCbgdZnl_3zhyFOkKAZDbDwPciDCO7WM
apple-domain-verification=H6LhgWxQqeBhzPJA
CAALookup not available with standard resolver
Resolved in 92 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+
Crawlability
robots.txt present, sitemap with 25 URLs
PASS
robots.txt present, sitemap with 25 URLs
Info::
robots.txt is present
Got: 424 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 25 entries
Info::
Sitemap index with 25 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 424 B Sitemaps referenced 1 User-agents *, one Blocking No — crawling allowed
User-agent: *
Crawl-Delay: 5
Disallow: */contacts/all-contacts.*.html$
Disallow: */contacts/all-contacts/us-sales.*.html$
Disallow: */member-stories.*.html$
Disallow: */services/a-z.*.html$
Disallow: */services/a-z/*
Disallow: */developer/gallery.*.en.html$
Disallow: */developer/news.*.en.html$
Disallow: */developer/develop/web-services.*.en.html$

User-agent: one
Disallow: /

SITEMAP: https://www.oclc.org/sitemap.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 25 entries Valid XML Yes
Child Sitemaps:
A
HTTP Probe Timing
Total 519 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
32 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
16 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
22 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
519 ms
Total Time Total request time from DNS lookup through full response.
519 ms

Connection waterfall

DNS Lookup 32 ms TCP Connect 16 ms TLS Handshake 22 ms Server Processing 449 ms Content Transfer 0 ms
A
CDN & Delivery
Cloudflare (DYNAMIC)
PASS
Cloudflare (DYNAMIC)
Info::
Site is served via Cloudflare CDN (edge: CDG)
Got: cf-ray: 9effa562efe822a6-CDG
Info::
CDN cache status: DYNAMIC
CDN Detected: Cloudflare
Provider Cloudflare Cache Status DYNAMIC Evidence cf-ray: 9effa562efe822a6-CDG
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.

Send Feedback