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https://opencollective.com

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
96
GRADE
A
FIX
0
REVIEW
3
PASS
6
INFO
0
Probed from New York, United Stated
200 OK
Checks
9
6 PASS 3 REVIEW
B
Crawlability
robots.txt present, no sitemap
REVIEW
robots.txt present, no sitemap
Info::
robots.txt is present
Got: 371 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 371 B Sitemaps referenced 0 User-agents SemrushBot, SemrushBot-SA, SemrushBot-SI, SemrushBot-SWA, SemrushBot-CT, BLEXBot, SemrushBot-BA, SemrushBot-BM, MJ12bot, AhrefsBot Blocking No — crawling allowed
User-agent: SemrushBot
Disallow: /

User-agent: SemrushBot-SA
Disallow: /

User-agent: SemrushBot-BA
Disallow: /

User-agent: SemrushBot-SI
Disallow: /

User-agent: SemrushBot-SWA
Disallow: /

User-agent: SemrushBot-CT
Disallow: /

User-agent: SemrushBot-BM
Disallow: /

User-agent: MJ12bot
Disallow: /

User-agent: AhrefsBot
Disallow: /

User-agent: BLEXBot
Disallow: /
sitemap.xml No sitemap found

No sitemap found

Adding a sitemap helps search engines discover your pages.

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

Certificate validity

46
days left
0d 30d 60d 90d+

Recommended actions

  • Add the preload directive and submit to hstspreload.org once max-age + includeSubDomains are in place
  • Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
B
CDN & Delivery
Cloudflare (EXPIRED)
REVIEW
Cloudflare (EXPIRED)
Info::
Site is served via Cloudflare CDN (edge: EWR)
Got: cf-ray: 9f00a043e8e61512-EWR
Info::
CDN cache status: EXPIRED
CDN Detected: Cloudflare
Provider Cloudflare Cache Status EXPIRED Evidence cf-ray: 9f00a043e8e61512-EWR
A+
DNS Records
3 A records, 7 ms lookup
PASS
3 A records, 7 ms lookup
Info::
Resolves to 3 IPv4 address(es)
Got: 104.26.12.145, 104.26.13.145, 172.67.71.29
Info::
Has 3 IPv6 (AAAA) record(s)
Got: 2606:4700:20::681a:c91, 2606:4700:20::681a:d91, 2606:4700:20::ac43:471d
Info::
2 nameserver(s) configured
Got: roxy.ns.cloudflare.com, pablo.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::
SPF record present in TXT
Info::
DNS resolution time: 7 ms
Got: 7 ms
A104.26.12.145, 104.26.13.145, 172.67.71.29
AAAA2606:4700:20::681a:c91, 2606:4700:20::681a:d91, 2606:4700:20::ac43:471d
CNAME—
NSroxy.ns.cloudflare.com, pablo.ns.cloudflare.com
MX
1 aspmx.l.google.com
5 alt2.aspmx.l.google.com
5 alt1.aspmx.l.google.com
10 alt3.aspmx.l.google.com
10 alt4.aspmx.l.google.com
TXT
SPF v=spf1 include:mailgun.org include:_spf.google.com ~all
google-site-verification=_UymNBodbgtmLPT63pJYFvyw1zO3bzLZEY-cLEVEGhs
google-site-verification=fW3mBFuNe4Az29d7aTmyeWfPtQqHwCgtV5PwsBxNHLw
google-site-verification=skhhgLqcdidjeO39qmJ0PIjb7wGY4LlUoNnpSVLf2bk
CAALookup not available with standard resolver
Resolved in 7 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 redirects — direct access
PASS
No redirects — direct access
Info::
No redirects — direct access
Got: https://opencollective.com

https://opencollective.com

47 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://opencollective.com20047 msHTTP/1.1cloudflare
A+
IPv6 Readiness
IPv6 reachable (2 ms)
PASS
IPv6 reachable (2 ms)
Info::
IPv6 is configured and reachable at 2606:4700:20::681a:c91, 2606:4700:20::681a:d91, 2606:4700:20::ac43:471d
Got: 2 ms connect
IPv6 Ready
AAAA Records 2606:4700:20::681a:c91, 2606:4700:20::681a:d91, 2606:4700:20::ac43:471d Connection Reachable (2 ms)
A+
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
PASS
www/non-www, trailing slash, HTTP→HTTPS
Info::
www/non-www redirect configured correctly (preferred: non-www)
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

301https://www.opencollective.com/
200https://opencollective.com/

Preferred variant: non-www

HTTP → HTTPS

301http://opencollective.com/ → https://opencollective.com/

Consistent

A+
Domain Intelligence
opencollective.com — via Cloudflare, Inc., 23 years, 9 months old
PASS
opencollective.com — via Cloudflare, Inc., 23 years, 9 months old
Info::
Domain registered until Nov 4, 2026 (6 months remaining)
Info::
DNSSEC is enabled
Info::
Registrar: Cloudflare, 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

144 days

November 4, 2026

SSL certificate

46 days

Issued by Google Trust Services

Domain age

23 years, 9 months

Registered November 4, 2002

DNSSEC

Enabled

Protects against DNS spoofing

Hosting

Unknown

2606:4700:20::ac43:471d

Registrar

Cloudflare, Inc.

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 Cloudflare, Inc.
Created November 4, 2002 (23 years, 9 months ago)
Expires November 4, 2026 (6 months)
Last Updated October 5, 2025
Name Servers pablo.ns.cloudflare.com, roxy.ns.cloudflare.com
DNSSEC Enabled
Hosting
IP Address 2606:4700:20::ac43:471d
Data source: rdap (0.1s)

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 123 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
5 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
2 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
10 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
122 ms
Total Time Total request time from DNS lookup through full response.
124 ms

Connection waterfall

DNS Lookup 5 ms TCP Connect 2 ms TLS Handshake 10 ms Server Processing 105 ms Content Transfer 2 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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