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
BTLS Certificate Expiry & Recommendations219 days until leaf cert expires — 4 issues to addressREVIEW
Certificate validity
Recommended actions
- Add includeSubDomains to the HSTS directive
- 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 Records4 A records, 112 ms lookupPASS
| A | 99.86.20.48, 99.86.20.27, 99.86.20.12, 99.86.20.26 |
| AAAA | — |
| CNAME | — |
| NS | — |
| MX | — |
| TXT | — |
| 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.
SPF helps prevent email spoofing. Add a TXT record starting with 'v=spf1'.
Without SPF, receiving servers can't validate sending IPs — your domain is easier to spoof in phishing.
Learn more ▾ ▴
SPF complements DMARC. Both should be published. SPF records list authorized sending IPs (e.g., `v=spf1 include:_spf.google.com ~all` for Google Workspace). After publishing, verify in Google Postmaster Tools or mxtoolbox.
Source: RFC 7208 (SPF)
A+Redirect ChainNo redirects — direct accessPASS
https://www.jetbrains.com
12 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://www.jetbrains.com | 200 | 12 ms | HTTP/1.1 | nginx |
A+Crawlabilityrobots.txt present, sitemap with 2 URLsPASS
User-Agent: *
# Global
Disallow: */search/
Disallow: */shop/
Disallow: */eshop*
Disallow: */estore*
Disallow: */unitrun*
Disallow: /languages/
Disallow: */feedback/
# crawling _allowed_: indexing blocked via robots noindex
# Disallow: */promo/
# Disallow: */download-thanks
# Sitemaps
Sitemap: https://www.jetbrains.com/sitemap_index.xml
# Yandex
User-agent: Yandex
Clean-param: q&products&utm_source&productedition&src&var&type&productversion&order&from&search&_ga&_gac&_gl&edition&utm_content&vsversion&hl&u&keyword&utm_medium&dclid&topic&rel&source&build&platform&ref&installedvsversions&utm_code&fbclid&products_id&fromMenu&fromblog&origin&code&fromide&timezone&utm_campaign&gclsrc&sid&page§ion&mkt_tok&mode&keymap&rss&s
# Baidu
User-agent: Baiduspider
Disallow: */promo/
Disallow: */download-thanks
Disallow: /?q
Disallow: /?products
Disallow: /?utm_source
Disallow: /?productedition
Disallow: /?src
Disallow: /?var
Disallow: /?type
Disallow: /?productversion
Disallow: /?order
Disallow: /?from
Disallow: /?search
Disallow: /?_ga
Disallow: /?_gac
Disallow: /?_gl
Disallow: /?edition
Disallow: /?utm_content
Disallow: /?vsversion
Disallow: /?hl
Disallow: /?u
Disallow: /?keyword
Disallow: /?utm_medium
Disallow: /?dclid
Disallow: /?topic
Disallow: /?rel
Disallow: /?source
Disallow: /?build
Disallow: /?platform
Disallow: /?ref
Disallow: /?installedvsversions
Disallow: /?utm_code
Disallow: /?fbclid
Disallow: /?products_id
Disallow: /?fromMenu
Disallow: /?fromFooter
Disallow: /?fromblog
Disallow: /?origin
Disallow: /?code
Disallow: /?fromide
Disallow: /?timezone
Disallow: /?utm_campaign
Disallow: /?gclsrc
Disallow: /?sid
Disallow: /?page
Disallow: /?section
Disallow: /?mkt_tok
Disallow: /?mode
Disallow: /?keymap
Disallow: /?rss
Disallow: /?s
A+URL Variantswww/non-www, trailing slash, HTTP→HTTPSPASS
www / non-www
HTTP → HTTPS
Consistent
A+Domain Intelligencejetbrains.com — via Network Solutions, LLC, 24 years, 9 months old, hosted on AWSPASS
816 days
November 9, 2028
219 days
Issued by Amazon
24 years, 9 months
Registered November 9, 2001
Not enabled
Protects against DNS spoofing
AWS
ASN AS16509
65.8.76.50
Network Solutions, LLC
Expiry timeline
Recommended actions
- Enable DNSSEC to protect visitors from DNS spoofing
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