Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.CIPv6 ReadinessActionNo IPv6 supportREVIEW
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.
Source: Google IPv6 stats
BURL Variantswww/non-www, trailing slash, HTTP→HTTPSREVIEW
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
Consistent
BTLS Certificate Expiry & Recommendations322 days until leaf cert expires — 3 issues to addressREVIEW
Certificate validity
Recommended actions
- Submit your domain to hstspreload.org to be added to the Chrome preload list
- 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 Records4 A records, 12 ms lookupPASS
| A | 108.156.60.114, 108.156.60.27, 108.156.60.25, 108.156.60.121 |
| AAAA | — |
| CNAME | — |
| NS | ns-1515.awsdns-61.org, ns-1622.awsdns-10.co.uk, ns-260.awsdns-32.com, ns-728.awsdns-27.net |
| MX | 1 aspmx.l.google.com 5 alt2.aspmx.l.google.com 5 alt1.aspmx.l.google.com 10 alt4.aspmx.l.google.com 10 alt3.aspmx.l.google.com |
| TXT | _globalsign-domain-verification=TklsnSRQiJbWQJg-Kc_PZ2FYxD1A6qIp22n4WWUgix apple-domain-verification=W733KfoQ8suR0rC0 atlassian-domain-verification=oM7NI2ZbJ8/zyUaXCau48OIuhJU1hgESJXolvpIPG8bniL30Kk... cloudflare_dashboard_sso=8be8b6a6dbf61e2f126590896c701a17 facebook-domain-verification=5be3t83l1ahoe4yxhkjzn5jmyrxgls google-site-verification=7MNbW901xGei25ROWe3ACvV0E_8mH9GxWuErePoC4rk google-site-verification=898sEXF0Bvdhlq4kl6rngYeUiE1nE0ri74Qce4_p3gg google-site-verification=FRcHeHdo_eXiQD4u_0zYHt7DoTFHmmPjT31w7l7p_FI google-site-verification=TmMJrNZw9Rw9ALLk57Zz17xPR-WiVOPeMPTskcpmGCk google-site-verification=X7NQGtfSumtBbPwHQSrSeX526HTUAGeWf9u2ZoREijI google-site-verification=mNLCvbJ9yFfT0yu7QWKm-NC39XEsObLKuynvnA7vPjc linear-domain-verification=xvd7fzfjjyb8 miro-verification=746435b104d648f9283c56a62b5d57a277ec7aba mixpanel-domain-verify=fbf1c107-7636-4ab9-bde4-7b747f6eb045 o3rsdr6u50bcdibpc91vab3jk sympla.com.br=6r3idmhd1fps57h6kmr38irh0v SPF v=spf1 include:_spf.google.com include:_spf1.sympla.com.br include:_spf.rdstatio... |
| CAA | Lookup not available with standard resolver |
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.
ARedirect Chain1 redirect(s), 152 ms totalPASS
https://sympla.com.br
105 ms · HTTP/1.1
https://www.sympla.com.br/
47 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://sympla.com.br | 301 | 105 ms | HTTP/1.1 | AmazonS3 |
| 2 | https://www.sympla.com.br/ | 200 | 47 ms | HTTP/1.1 | cloudflare |
See the visual redirect chain in the HTTP Probe tab →
A+Crawlabilityrobots.txt present, sitemap with 4 URLsPASS
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.
robots.txt omits Sitemap: directive — crawlers must fetch /sitemap.xml by convention; reliable but missing the explicit hint.
Source: sitemaps.org
User-agent: *
Allow: /
A+Domain Intelligencesympla.com.br — 15 years, 4 months old, hosted on AWSPASS
973 days
March 11, 2029
322 days
Issued by Amazon
15 years, 4 months
Registered March 11, 2011
Not enabled
Protects against DNS spoofing
AWS
ASN AS16509
108.156.60.121
Registrar unknown
Expiry timeline
Recommended actions
- Enable DNSSEC to protect visitors from DNS spoofing
- Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.
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.
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