Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.DCDN & DeliveryActionNo CDN detectedFIX
Consider using a CDN to improve global delivery speed and reduce origin load.
BCrawlabilityrobots.txt present, no sitemapREVIEW
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.
Learn more ▾ ▴
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
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.
robots.txt omits Sitemap: directive — crawlers must fetch /sitemap.xml by convention; reliable but missing the explicit hint.
Source: sitemaps.org
User-agent: *
Disallow: /Search
Disallow: /ml
# Throttle this bozo search engine
User-agent: Slurp
Crawl-delay: 10
# ...and another
User-agent: ScoutJet
Crawl-delay: 10
# Robota non grata
User-agent: Mail.RU_Bot
User-agent: Mail.RU_Bot/2.0
User-agent: MegaIndex
User-agent: MegaIndex.ru
User-agent: trendkite-akashic-crawler
User-agent: Jooblebot
User-agent: HTTrack
User-agent: yacybot
User-agent: PetalBot
User-agent: GPTBot
User-agent: SemrushBot
User-agent: AhrefsBot
User-agent: Qwantbot
User-agent: meta-externalagent
User-agent: ChatGLM-Spider
User-agent: ClaudeBot
Disallow: /
No sitemap found
Adding a sitemap helps search engines discover your pages.
BTLS Certificate Expiry & Recommendations39 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
A+DNS Records1 A records, 164 ms lookupPASS
| A | 173.255.236.65 |
| AAAA | 2600:3c03::f03c:93ff:febd:80f5 |
| CNAME | — |
| NS | static.lwn.net, mdns.lwn.net |
| MX | 1800 ms.lwn.net |
| TXT | google-site-verification=OmAnDDLmCZvY_c-5hSzY_uEpHDcaIAVlW69_Bw9IG0U SPF v=spf1 a:mail.lwn.net a:prod.lwn.net a:git.lwn.net a:ms.lwn.net -all |
| 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.
A+Redirect ChainNo redirects — direct accessPASS
https://lwn.net
296 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://lwn.net | 200 | 296 ms | HTTP/1.1 | Apache/2.4.62 (CentOS Stream) OpenSSL/3.5.5 |
A+IPv6 ReadinessIPv6 reachable (100 ms)PASS
A+URL Variantswww/non-www, trailing slash, HTTP→HTTPSPASS
www / non-www
Preferred variant: non-www
HTTP → HTTPS
Consistent
A+Domain Intelligencelwn.net — via Tucows Domains Inc., 28 years, 3 months oldPASS
339 days
May 21, 2027
39 days
Issued by Let's Encrypt
28 years, 3 months
Registered May 22, 1998
Not enabled
Protects against DNS spoofing
Unknown
2600:3c03::f03c:93ff:febd:80f5
Tucows Domains Inc.
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