Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.BTLS Certificate Expiry & Recommendations73 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
ADNS Records3 A records, 215 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 |
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.
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+Redirect ChainNo redirects — direct accessPASS
https://Vipoftalmologia.com.br
607 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://Vipoftalmologia.com.br | 200 | 607 ms | HTTP/1.1 | cloudflare |
A+IPv6 ReadinessIPv6 reachable (16 ms)PASS
A+Crawlabilityrobots.txt present, sitemap with 7 URLsPASS
User-agent: *
Allow: /
Sitemap: https://vipoftalmologia.com.br/sitemap.xml
A+URL Variantswww/non-www, trailing slash, HTTP→HTTPSPASS
www / non-www
Preferred variant: non-www
HTTP → HTTPS
Consistent
ADomain IntelligenceVipoftalmologia.com.br — via NEWFOLD, 1 years, 10 months oldPASS
EXPIRED
June 21, 2026
73 days
Issued by Let's Encrypt
1 years, 10 months
Registered June 21, 2024
Not enabled
Protects against DNS spoofing
Unknown
2606:4700:20::681a:c39
NEWFOLD
Expiry timeline
Recommended actions
- Domain has EXPIRED — renew immediately to avoid total site outage
- Enable DNSSEC to protect visitors from DNS spoofing
- Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Consider enabling auto-renewal to prevent accidental expiration.
Domain expiry approaching — renew immediately and ensure auto-renew + alerting are configured.
Source: ICANN renewal policy
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