Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.DURL VariantsActionwww/non-www, trailing slash, HTTP→HTTPSFIX
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
HTTP version does not redirect to HTTPS
DCDN & DeliveryActionNo CDN detectedFIX
Consider using a CDN to improve global delivery speed and reduce origin load.
BTLS Certificate Expiry & Recommendations65 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
A+DNS Records1 A records, 34 ms lookupPASS
| A | 213.36.253.2 |
| AAAA | 2a01:e0d:1:3:58bf:fa02:c0de:5 |
| CNAME | — |
| NS | ns1.videolan.org, ns2.videolan.org |
| MX | 10 natalya.videolan.org |
| TXT | google-site-verification=Ombk_Kf2ZTHD7sZYDoHndx-1-eTZppbQCaqyKtVkNvY MS=ms26420460 google-site-verification=X_QPucM0eqP0n1_CaBzAdOR9SDRW12XjVwSNxGUVLKI SPF v=spf1 ip4:78.47.90.109/32 ip6:2a01:4f8:c17:2e00::2/128 ip4:213.36.253.119/32 ip... mailo=StER4NXtEwNgOloqhiVn4A5gECNEVHzB |
| CAA | Lookup not available with standard resolver |
Multiple A records provide failover if one server goes down.
Single A record means a single point of failure — if that IP goes down, your site is unreachable until DNS TTL expires.
Learn more ▾ ▴
Add multiple A records for round-robin failover, or use a managed DNS provider with health-checked failover (Route 53, Cloudflare, NS1). Short TTL (60-300s) lets clients recover faster on outages.
Source: SRE practice / DNS architecture
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.
ARedirect Chain1 redirect(s), 153 ms totalPASS
https://videolan.org
55 ms · HTTP/1.1
https://www.videolan.org/
98 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://videolan.org | 301 | 55 ms | HTTP/1.1 | nginx/1.29.8 |
| 2 | https://www.videolan.org/ | 200 | 98 ms | HTTP/1.1 | nginx/1.29.8 |
See the visual redirect chain in the HTTP Probe tab →
A+IPv6 ReadinessIPv6 reachable (17 ms)PASS
A+Crawlabilityrobots.txt present, sitemap with 900 URLsPASS
# $Id$
Sitemap: https://www.videolan.org/sitemap-https.xml
User-agent: *
Disallow: /pub
Disallow: /removed
Disallow: /doc/logs
Disallow: /mirror.php
Disallow: /mirror-geo.php
Disallow: /mirror-geo-redirect.php
Disallow: /vlc/download-skins2-go.php
Disallow: /private
Disallow: /~videolan/
Disallow: /developers/vlc/po
Disallow: /developers/vlc-branch/po
# Do not crawl CVS and .svn directories
User-agent: *
Disallow: CVS
Disallow: .svn
# "This robot collects content from the Internet for the sole purpose of
# helping educational institutions prevent plagiarism. [...] we compare
# student papers against the content we find on the Internet to see if we
# can find similarities." (http://www.turnitin.com/robot/crawlerinfo.html)
# --> fuck off.
User-Agent: TurnitinBot
Disallow: /
# "NameProtect engages in crawling activity in search of a wide range of
# brand and other intellectual property violations that may be of interest
# to our clients." (http://www.nameprotect.com/botinfo.html)
# --> fuck off.
User-Agent: NPBot
Disallow: /
# "iThenticate® is a new service we have developed to combat the piracy
# of intellectual property and ensure the originality of written work for#
# publishers, non-profit agencies, corporations, and newspapers."
# (http://www.slysearch.com/)
# --> fuck off.
User-Agent: SlySearch
Disallow: /
A+Domain Intelligencevideolan.org — via Gandi SAS, 26 years, 7 months oldPASS
3124 days
February 3, 2035
65 days
Issued by Let's Encrypt
26 years, 7 months
Registered February 3, 2000
Not enabled
Protects against DNS spoofing
Unknown
2a01:e0d:1:3:58bf:fa02:c0de:5
Gandi SAS
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