Infrastructure
· 17 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.BDNSSECUnsigned (DNSSEC not deployed)REVIEW
BCAA RecordsNo CAA records (any CA may issue certificates)REVIEW
CReverse DNSAction0/6 IPs match cert SANREVIEW
BCrawlabilityrobots.txt present, sitemap with 0 URLsREVIEW
Search engines may not be able to parse the sitemap. Fix XML validation errors.
An unparseable sitemap is silently ignored by Google — the URLs it advertises are never queued for crawl.
Learn more ▾ ▴
Google's sitemap parser is strict about XML validity. A single unescaped `&` or unclosed tag invalidates the whole file. Run your sitemap through a validator (Search Console's Sitemaps report flags it) and fix the offending entry. Most generators escape correctly; mistakes usually come from manually-written entries.
Source: sitemaps.org / Google Search Central
An empty sitemap provides no value. Add <url> entries for your pages.
An empty sitemap signals 'no content to index' to Google — actively harmful versus having no sitemap at all.
Learn more ▾ ▴
Google compares URLs in the sitemap against URLs it has crawled. An empty sitemap on a site with thousands of pages signals abandonment. Either populate it correctly (most CMSes auto-generate) or delete the file and let Google crawl normally.
Source: Google Search Central / sitemaps.org
User-agent: *
Allow: /
Sitemap: https://vipoftalmologia.com.br/sitemap.xml
BHTTP Probe TimingTotal 846 ms — DNS, TCP, TLS, TTFB, content transfer breakdownREVIEW
Connection waterfall
BTLS Certificate Expiry & Recommendations60 days until leaf cert expires — 4 issues to addressREVIEW
Certificate validity
Recommended actions
- Extend HSTS max-age to at least 31536000 (1 year) to meet the preload list criteria
- 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
BOperational Status PageNo status page link detectedREVIEW
ADNS Records3 A records, 227 ms lookupPASS
| A | 104.26.12.57, 104.26.13.57, 172.67.72.177 |
| AAAA | 2606:4700:20::681a:c39, 2606:4700:20::681a:d39, 2606:4700:20::ac43:48b1 |
| CNAME | — |
| NS | imani.ns.cloudflare.com, lars.ns.cloudflare.com |
| MX | 0 _dc-mx.55cc064c8389.vipoftalmologia.com.br |
| TXT | SPF v=spf1 a mx include:websitewelcome.com ~all google-site-verification=2gnxhG5fi0L0A0ykK0GucM4h6ShDrgTmt51FwQogqeI |
| CAA | Lookup not available with standard resolver |
Slow DNS adds latency to every page load. Consider a faster DNS provider.
DNS resolution is slow — anycast DNS providers (Cloudflare, Route 53) typically resolve <50ms globally.
Source: DNS performance benchmarks
A+Subdomain TakeoverNo subdomain takeover risk detectedPASS
AMulti-Resolver DNS SpeedMean 57ms across 3 resolvers (spread 59ms)PASS
A+Redirect ChainNo redirects — direct accessPASS
https://vipoftalmologia.com.br
262 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://vipoftalmologia.com.br | 200 | 262 ms | HTTP/1.1 | cloudflare |
A+IPv6 ReadinessIPv6 reachable (17 ms)PASS
A+URL Variantswww/non-www, trailing slash, HTTP→HTTPSPASS
www / non-www
Preferred variant: non-www
HTTP → HTTPS
Consistent
A+Domain Intelligencevipoftalmologia.com.br — via NEWFOLD, 1 years, 11 months oldPASS
766 days
June 21, 2028
60 days
Issued by Let's Encrypt
1 years, 11 months
Registered June 21, 2024
Not enabled
Protects against DNS spoofing
Unknown
2606:4700:20::681a:d39
NEWFOLD
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