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Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
93
GRADE
A
FIX
0
REVIEW
4
PASS
5
INFO
0
Probed from Singapore, Singapore
200 OK
Checks
9
5 PASS 4 REVIEW
C
Crawlability
Action
robots.txt present, sitemap with 2761 URLs
REVIEW
robots.txt present, sitemap with 2761 URLs
Info::
robots.txt is present
Got: 1683 bytes
Critical::
robots.txt blocks all crawlers
Disallow: / for all user-agents prevents search engines from indexing any page. This will remove the site from search results.
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 2761 entries
Info::
Sitemap index with 2761 child sitemaps
Info::
robots.txt references sitemap

Disallow: / for all user-agents prevents search engines from indexing any page. This will remove the site from search results.

Why this matters

Disallow: / in robots.txt blocks every search crawler — the site becomes invisible in organic search.

Learn more ▾

Common deployment mistake: a staging robots.txt with `User-agent: * / Disallow: /` ships to prod. The site falls out of search results within days. Verify your robots.txt is the production-intended version. If this is intentional (private site), no action needed.

Source: Google Search Central

robots.txt 200 OK
Size 1683 B Sitemaps referenced 1 User-agents meta-externalagent, Perplexity-User, Applebot-extended, DuckDuckBot, facebot, Timpibot, Claude-Web, anthropic-ai, Googlebot, Baiduspider, iaskspider, Twitterbot, Mediapartners-Google, AdsBot-Google-Mobile, Bytespider, Amazonbot, ia_archiver, Qwantify, PerplexityBot, DuckAssistBot, ClaudeBot, GPTBot, ChatGPT-User, Ai2Bot-Dolma, FacebookBot, *, AdsBot, CCBot, cohere-ai, bingbot, Slurp, OAI-SearchBot, omgili, Diffbot, YouBot, meta-externalfetcher, Yandex Blocking Yes — all crawlers blocked
User-Agent: *
Allow: /ads.txt
Disallow: /search/?q=*
Disallow: /

User-agent: Googlebot
Allow: /
Disallow: /search/?q=*

User-agent: Yandex
Allow: /
Disallow: /search/?q=*

User-agent: bingbot
Allow: /
Disallow: /search/?q=*

User-agent: Slurp
Allow: /
Disallow: /search/?q=*

User-agent: DuckDuckBot
Allow: /
Disallow: /search/?q=*

User-agent: Baiduspider
Allow: /
Disallow: /search/?q=*

User-agent: facebot
Allow: /
Disallow: /search/?q=*

User-agent: ia_archiver
Allow: /
Disallow: /search/?q=*

User-agent: iaskspider
Allow: /
Disallow: /search/?q=*

User-agent: Twitterbot
Allow: /
Disallow: /search/?q=*

User-agent: Mediapartners-Google
Allow: /
Disallow: /search/?q=*

User-agent: AdsBot-Google-Mobile
Allow: /
Disallow: /search/?q=*

User-agent: AdsBot
Allow: /
Disallow: /search/?q=*

User-agent: Qwantify
Allow: /
Disallow: /search/?q=*

# Newly added AI / crawler user-agents
User-agent: GPTBot
Allow: /

User-agent: ChatGPT-User
Allow: /

User-agent: OAI-SearchBot
Allow: /

User-agent: meta-externalagent
Allow: /

User-agent: Bytespider
Allow: /

User-agent: Amazonbot
Allow: /

User-agent: PerplexityBot
Allow: /

User-agent: Timpibot
Allow: /

User-agent: DuckAssistBot
Allow: /

User-agent: Perplexity-User
Allow: /

User-agent: CCBot
Allow: /

User-agent: Ai2Bot-Dolma
Allow: /

User-agent: ClaudeBot
Allow: /

User-agent: Claude-Web
Allow: /

User-agent: omgili
Allow: /

User-agent: FacebookBot
Allow: /

User-agent: anthropic-ai
Allow: /

User-agent: Diffbot
Allow: /

User-agent: YouBot
Allow: /

User-agent: cohere-ai
Allow: /

User-agent: Applebot-extended
Allow: /

User-agent: meta-externalfetcher
Allow: /

Sitemap: https://downdetector.com/sitemap.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 2761 entries Valid XML Yes
Child Sitemaps:
C
HTTP Probe Timing
Action
Total 1588 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
REVIEW
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
3 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
1 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
7 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
864 ms
Total Time Total request time from DNS lookup through full response.
1.59 s

Connection waterfall

DNS Lookup 3 ms TCP Connect 1 ms TLS Handshake 7 ms Server Processing 853 ms Content Transfer 725 ms
B
TLS Certificate Expiry & Recommendations
87 days until leaf cert expires — 4 issues to address
REVIEW

Certificate validity

87
days left
0d 30d 60d 90d+

Recommended actions

  • Add includeSubDomains to the HSTS directive
  • 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
Cloudflare (BYPASS)
REVIEW
Cloudflare (BYPASS)
Info::
Site is served via Cloudflare CDN (edge: SIN)
Got: cf-ray: 9f0833411f096494-SIN
Info::
CDN cache status: BYPASS
CDN Detected: Cloudflare
Provider Cloudflare Cache Status BYPASS Evidence cf-ray: 9f0833411f096494-SIN
A+
DNS Records
2 A records, 13 ms lookup
PASS
2 A records, 13 ms lookup
Info::
Resolves to 2 IPv4 address(es)
Got: 104.18.23.179, 104.18.22.179
Info::
Has 2 IPv6 (AAAA) record(s)
Got: 2606:4700::6812:16b3, 2606:4700::6812:17b3
Info::
2 nameserver(s) configured
Got: jean.ns.cloudflare.com, pete.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: 13 ms
Got: 13 ms
A104.18.23.179, 104.18.22.179
AAAA2606:4700::6812:16b3, 2606:4700::6812:17b3
CNAME—
NSjean.ns.cloudflare.com, pete.ns.cloudflare.com
MX
10 aspmx.l.google.com
20 alt2.aspmx.l.google.com
20 alt1.aspmx.l.google.com
30 aspmx2.googlemail.com
30 aspmx3.googlemail.com
TXT
amazonses:grnf/WuZRZj2o7wFywoALPZx93I+BQELQu6CoR/Kvus=
atlassian-domain-verification=x79tygDs8mtVq3GwAxabq/DeA2ot/bQMQMIURqG699Xx2zuyja...
google-site-verification=-AjZiaavokKTGQ_Gx2003ftlcs7i-QB4VJUMhU_qJqM
google-site-verification=08IY08nQkYWxxkxdZrFsz2lz9AbKQbpURt8Fywx5kgk
google-site-verification=KDc3klA6zhHcqZMoYE81JDXCXzmID_1DwQKEGgtUAL0
google-site-verification=LkDdkIyQD5tKpSUMZr5oG_4rAyr7ddg7rYu6hPy9t7k
google-site-verification=MSF98lJ9Wx14fb7CyMvxxFGw7g7jB7SEC6HFCIUhrRQ
google-site-verification=N1LsYtBdsqU_0hQ4fbi_UCG28zNJVifJ0cZkrJvSA-E
google-site-verification=O0hy3vOEjoB21QtniawiGaZTmuxh0ugtmT0KawjjRZA
google-site-verification=RW8w1V3zqvaF0X5LK09aSAm3RCINxvZz5H1PpAB7AO4
google-site-verification=Rob8HVaRvHQbIpOJOA3bdUT6RI3NffPC9kLUjBsRALU
google-site-verification=S7IRTmjuAikwQCtd08biKrDr_ZDH9QLc9gGIDJAcJCM
google-site-verification=V9RRB9UJYWxE6x8KtnYEyzk0wY9pVCxcCDKeJ1PQtfU
google-site-verification=XVyIzQwTHd0l4PQDmFjYKCk8zfHkBI9qJPOi6weCWiQ
google-site-verification=X_cbm0Ck9eiqd9IeMDdCl0MohC1ApMTlKUXZiROI1e4
google-site-verification=ZL5wMtLbFL_R4AJFwvWcIivsAtrKhcZASyHnfhS3-xM
google-site-verification=ZQkVz9V6B1fV6u3zGx4QLnb6Qw25ktp8iLXANHjR2mw
google-site-verification=bX18kdA6BaN362N4XG22KkcYEY5InmdCUrclss_d1Vk
google-site-verification=o7FY7MmWdlCH2hzt9ip62aM7rvMWxdPt2-mgRGTzMo0
google-site-verification=tSmf1FKQZhS2bNGPXrL9iSN-ITHss9S4MarZeUfpYyE
sending_domain1111933=9493681dd77d590ba3747346cbe35acdcf131a551d519ca59ccbc414c7...
SPF v=spf1 include:_spf.google.com include:spf.mandrillapp.com include:servers.mcsv....
yandex-verification: 6ee252174612a6e8
CAALookup not available with standard resolver
Resolved in 13 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://downdetector.com

https://downdetector.com

934 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://downdetector.com200934 msHTTP/1.1cloudflare
A+
IPv6 Readiness
IPv6 reachable (1 ms)
PASS
IPv6 reachable (1 ms)
Info::
IPv6 is configured and reachable at 2606:4700::6812:16b3, 2606:4700::6812:17b3
Got: 1 ms connect
IPv6 Ready
AAAA Records 2606:4700::6812:16b3, 2606:4700::6812:17b3 Connection Reachable (1 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.downdetector.com/
200https://downdetector.com/

Preferred variant: non-www

HTTP → HTTPS

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

Consistent

A+
Domain Intelligence
downdetector.com — via CSC Corporate Domains, Inc., 13 years, 4 months old
PASS
downdetector.com — via CSC Corporate Domains, Inc., 13 years, 4 months old
Info::
Domain registered until Feb 18, 2028 (1 years, 10 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: CSC Corporate Domains, 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

585 days

February 18, 2028

SSL certificate

87 days

Issued by Google Trust Services

Domain age

13 years, 4 months

Registered February 18, 2013

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Unknown

2606:4700::6812:16b3

Registrar

CSC Corporate Domains, Inc.

Unlocked 2 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 CSC Corporate Domains, Inc.
Created February 18, 2013 (13 years, 4 months ago)
Expires February 18, 2028 (1 years, 10 months)
Last Updated August 17, 2022
Name Servers jean.ns.cloudflare.com, pete.ns.cloudflare.com
DNSSEC Not enabled
Hosting
IP Address 2606:4700::6812:16b3
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

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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