Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.BCrawlabilityno robots.txt, no sitemapREVIEW
robots.txt is optional but recommended. It tells search engine crawlers which pages to index.
No robots.txt — crawlers fetch /robots.txt and get 404; not breaking but means default crawl behavior with no directives or sitemap reference.
Learn more ▾ ▴
A minimal robots.txt with `User-agent: * / Allow: / / Sitemap: https://example.com/sitemap.xml` covers the basics. Without it, crawlers behave fine but lose the sitemap signal and can't be selectively blocked from crawl-traps.
Source: robotstxt.org
A sitemap helps search engines discover and index your pages more efficiently.
No sitemap.xml — Google relies on crawl-graph discovery alone, slowing indexing of deep or fresh URLs.
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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
No robots.txt found
This is fine for most sites — a missing robots.txt allows all crawling by default.
No sitemap found
Adding a sitemap helps search engines discover your pages.
BURL Variantswww/non-www, trailing slash, HTTP→HTTPSREVIEW
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
Consistent
BHTTP Probe TimingTotal 1203 ms — DNS, TCP, TLS, TTFB, content transfer breakdownREVIEW
Connection waterfall
BTLS Certificate Expiry & Recommendations293 days until leaf cert expires — 3 issues to addressREVIEW
Certificate validity
Recommended actions
- Enable HSTS: Strict-Transport-Security: max-age=31536000; includeSubDomains
- 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 Records4 A records, 2005 ms lookupPASS
| A | 3.163.10.4, 3.163.10.101, 3.163.10.118, 3.163.10.109 |
| AAAA | 2600:9000:238e:3000:1d:dc7f:4180:93a1, 2600:9000:238e:ec00:1d:dc7f:4180:93a1, 2600:9000:238e:de00:1d:dc7f:4180:93a1, 2600:9000:238e:a000:1d:dc7f:4180:93a1, 2600:9000:238e:5a00:1d:dc7f:4180:93a1, 2600:9000:238e:b400:1d:dc7f:4180:93a1, 2600:9000:238e:400:1d:dc7f:4180:93a1, 2600:9000:238e:c400:1d:dc7f:4180:93a1 |
| CNAME | — |
| NS | ns-1283.awsdns-32.org, ns-1715.awsdns-22.co.uk, ns-327.awsdns-40.com, ns-660.awsdns-18.net |
| MX | 5 mail.virtualmin.com |
| TXT | SPF v=spf1 a mx a:www.virtualmin.com ip6:2001:19f0:6401:9e4:5400:3ff:fe31:dca3 inclu... |
| 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
ARedirect Chain1 redirect(s), 298 ms totalPASS
https://virtualmin.com
36 ms · HTTP/1.1
https://www.virtualmin.com/
261 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://virtualmin.com | 301 | 36 ms | HTTP/1.1 | Apache |
| 2 | https://www.virtualmin.com/ | 200 | 261 ms | HTTP/1.1 | Apache |
See the visual redirect chain in the HTTP Probe tab →
A+IPv6 ReadinessIPv6 reachable (42 ms)PASS
ADomain Intelligencevirtualmin.com — via NameCheap, Inc., 23 years, 1 months oldPASS
EXPIRED
June 28, 2026
293 days
Issued by Amazon
23 years, 1 months
Registered June 28, 2003
Not enabled
Protects against DNS spoofing
Unknown
2600:9000:2619:4a00:1d:dc7f:4180:93a1
NameCheap, Inc.
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.
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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.
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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