Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.BTLS Certificate Expiry & Recommendations42 days until leaf cert expires — 2 issues to addressREVIEW
Certificate validity
Recommended actions
- Enable HSTS: Strict-Transport-Security: max-age=31536000; includeSubDomains
- Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A+DNS Records3 A records, 48 ms lookupPASS
| A | 104.26.8.84, 104.26.9.84, 172.67.73.64 |
| AAAA | 2606:4700:20::681a:854, 2606:4700:20::ac43:4940, 2606:4700:20::681a:954 |
| CNAME | — |
| NS | pam.ns.cloudflare.com, miles.ns.cloudflare.com |
| MX | 10 mx1.improvmx.com 20 mx2.improvmx.com |
| TXT | github-verification=Co5XEGjgZ54phI90tdeEbcXBt0LErl0nKNUpqPmR SPF v=spf1 -all |
| 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.
A+Redirect ChainNo redirects — direct accessPASS
https://js.org
265 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://js.org | 200 | 265 ms | HTTP/1.1 | cloudflare |
A+IPv6 ReadinessIPv6 reachable (17 ms)PASS
ACrawlabilityno robots.txt, sitemap with 6 URLsPASS
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
No robots.txt found
This is fine for most sites — a missing robots.txt allows all crawling by default.
A+URL Variantswww/non-www, trailing slash, HTTP→HTTPSPASS
www / non-www
Preferred variant: non-www
HTTP → HTTPS
Consistent
A+Domain Intelligencejs.org — via NameCheap, Inc., 30 years, 3 months oldPASS
2201 days
June 25, 2032
42 days
Issued by Let's Encrypt
30 years, 3 months
Registered June 26, 1996
Enabled
Protects against DNS spoofing
Unknown
2606:4700:20::681a:854
NameCheap, Inc.
Expiry timeline
Recommended actions
- Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
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