Infrastructure
· 17 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.BDNSSECUnsigned (DNSSEC not deployed)REVIEW
CReverse DNSAction0/2 IPs match cert SANREVIEW
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
CCrawlabilityActionrobots.txt present, sitemap with 0 URLsREVIEW
Search engines may not be able to parse the sitemap. Fix XML validation errors.
An unparseable sitemap is silently ignored by Google — the URLs it advertises are never queued for crawl.
Learn more ▾ ▴
Google's sitemap parser is strict about XML validity. A single unescaped `&` or unclosed tag invalidates the whole file. Run your sitemap through a validator (Search Console's Sitemaps report flags it) and fix the offending entry. Most generators escape correctly; mistakes usually come from manually-written entries.
Source: sitemaps.org / Google Search Central
An empty sitemap provides no value. Add <url> entries for your pages.
An empty sitemap signals 'no content to index' to Google — actively harmful versus having no sitemap at all.
Learn more ▾ ▴
Google compares URLs in the sitemap against URLs it has crawled. An empty sitemap on a site with thousands of pages signals abandonment. Either populate it correctly (most CMSes auto-generate) or delete the file and let Google crawl normally.
Source: Google Search Central / sitemaps.org
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
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BTLS Certificate Expiry & Recommendations77 days until leaf cert expires — 1 issues to addressREVIEW
Certificate validity
Recommended actions
- Enable DNSSEC on your domain for DNS spoofing protection
BCDN & DeliveryVercelREVIEW
BCDN Cache ObservabilityNo CDN cache-status headers in the responseREVIEW
BOperational Status PageNo status page link detectedREVIEW
A+DNS Records2 A records, 10 ms lookupPASS
| A | 64.29.17.194, 216.198.79.194 |
| AAAA | — |
| CNAME | — |
| NS | ns1.vercel-dns-3.com, ns2.vercel-dns-3.com, ns3.vercel-dns-3.com, ns4.vercel-dns-3.com |
| MX | — |
| TXT | — |
| CAA | Lookup not available with standard resolver |
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+Subdomain TakeoverNo subdomain takeover risk detectedPASS
ACAA Recordsissue: letsencrypt.org, pki.googPASS
A+Multi-Resolver DNS SpeedMean 12ms across 3 resolvers (spread 27ms)PASS
ARedirect Chain1 redirect(s), 67 ms totalPASS
https://Vercel.app
15 ms · HTTP/1.1
https://vercel.com
52 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://Vercel.app | 308 | 15 ms | HTTP/1.1 | Vercel |
| 2 | https://vercel.com | 200 | 52 ms | HTTP/1.1 | Vercel |
See the visual redirect chain in the HTTP Probe tab →
AURL Variantswww/non-www, trailing slash, HTTP→HTTPSPASS
www / non-www
HTTP → HTTPS
Use 301 (permanent) instead of 302 (temporary)
A+Domain IntelligenceVercel.app — via Tucows Domains Inc, 6 years, 4 months old, hosted on AWSPASS
3542 days
January 28, 2036
77 days
Issued by Google Trust Services
6 years, 4 months
Registered January 28, 2020
Not enabled
Protects against DNS spoofing
AWS
ASN AS16509
64.29.17.194
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