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 & Recommendations87 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
BCDN & DeliveryVercelREVIEW
A+DNS Records2 A records, 130 ms lookupPASS
| A | 64.239.123.193, 64.239.123.65 |
| AAAA | — |
| CNAME | — |
| NS | ns2.vercel-dns.com, ns1.vercel-dns.com |
| MX | — |
| TXT | google-site-verification=8l6xfIvxDy7ZI32TFfrv8S3haLxbpVPY4qmc9sIvAIY google-site-verification=v_ZX7rc5Yh75SRolZBMB8GbsAeZLXDtOH4laVhVbyHY google-site-verification=OSqDDkqpfyXM7i1SMHO_kfF6Yqc7JC-2oBYxAAJOgbk google-site-verification=8SKAcO7YVybXwhZHNeoWhcfLTJhNNchNQbBzy-uVKmM |
| 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)
ARedirect Chain1 redirect(s), 488 ms totalPASS
https://turbo.build
74 ms · HTTP/1.1
https://turborepo.dev/
414 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://turbo.build | 301 | 74 ms | HTTP/1.1 | Vercel |
| 2 | https://turborepo.dev/ | 200 | 414 ms | HTTP/1.1 | Vercel |
See the visual redirect chain in the HTTP Probe tab →
A+Crawlabilityrobots.txt present, sitemap with 138 URLsPASS
User-Agent: *
Allow: /
Sitemap: https://turborepo.dev/sitemap.xml
AURL Variantswww/non-www, trailing slash, HTTP→HTTPSPASS
www / non-www
Preferred variant: non-www
HTTP → HTTPS
Use 301 (permanent) instead of 302 (temporary)
A+Domain Intelligenceturbo.build — via Tucows.com Co., 3 years, 7 months old, hosted on AWSPASS
60 days
September 9, 2026
87 days
Issued by Let's Encrypt
3 years, 7 months
Registered September 9, 2022
Not enabled
Protects against DNS spoofing
AWS
ASN AS16509
64.239.123.65
Tucows.com Co.
Expiry timeline
Recommended actions
- Renew the domain or enable auto-renewal to prevent accidental expiry
- 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