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
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
# https://www.robotstxt.org/robotstxt.html
User-agent: *
Disallow:
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
BTLS Certificate Expiry & Recommendations302 days until leaf cert expires — 3 issues to addressREVIEW
Certificate validity
Recommended actions
- Submit your domain to hstspreload.org to be added to the Chrome preload list
- 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
BCDN & DeliveryAWS CloudFront (FunctionGeneratedResponse from cloudfront)REVIEW
A+DNS Records4 A records, 28 ms lookupPASS
| A | 13.249.228.105, 13.249.228.73, 13.249.228.82, 13.249.228.52 |
| AAAA | — |
| CNAME | — |
| NS | ns-846.awsdns-41.net, ns-1658.awsdns-15.co.uk, ns-281.awsdns-35.com, ns-1118.awsdns-11.org |
| MX | 0 mxa-0031df01.gslb.pphosted.com 0 mxb-0031df01.gslb.pphosted.com |
| TXT | google-site-verification=gNiEOSbLM2t17cgW7n_rUrhX1KnrccCnbO9v_V3fbCg dtm-domain-verification=3ns2Wh5d2iN6KB3jgAvuAgjbIvPChLFEohh6TEZOevU apple-domain-verification=l10INRDXn4TczzFg ZOOM_verify_jLtNYTYbRSmm1bmnmA1FaA facebook-domain-verification=zboh9pgfjzwgxtr99yajl05yyvg2tx 1password-site-verification=PSAC2AEO4RDWNHMPFP5E63IRK4 MS= ms89120335 SPF v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all MS=2B67318E4A9BD924AA16272F48CC1D342D566A6F google-site-verification=8arU8U4qBC1S_fbIIMFpcsuXpjvjSrond3IKM58bbo8 google-site-verification=200rwaFV1PUIbA52VntbYW2Ls-dRAMcdyM8XZcKgrF0 google-site-verification=ZS4GItktaCpiwbSZimCnwlM1Rq91T_hRlfksfJnIIhU docusign=6984bed5-e90d-4784-b6dc-108d88bdbdaf |
| 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.
ARedirect Chain1 redirect(s), 152 ms totalPASS
https://arduino.cc
58 ms · HTTP/1.1
https://www.arduino.cc/
95 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://arduino.cc | 301 | 58 ms | HTTP/1.1 | CloudFront |
| 2 | https://www.arduino.cc/ | 200 | 95 ms | HTTP/1.1 | cloudflare |
See the visual redirect chain in the HTTP Probe tab →
A+Domain Intelligencearduino.cc — via MarkMonitor Inc., 20 years, 9 months old, hosted on AWSPASS
863 days
October 26, 2028
302 days
Issued by Amazon
20 years, 9 months
Registered October 26, 2005
Not enabled
Protects against DNS spoofing
AWS
ASN AS16509
13.249.228.82
MarkMonitor 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