Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.BTLS Certificate Expiry & Recommendations89 days until leaf cert expires — 5 issues to addressREVIEW
Certificate validity
Recommended actions
- Extend HSTS max-age to at least 31536000 (1 year) to meet the preload list criteria
- 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 Records2 A records, 6 ms lookupPASS
| A | 104.18.98.118, 104.18.99.118 |
| AAAA | 2606:4700::6812:6276, 2606:4700::6812:6376 |
| CNAME | — |
| NS | dom.ns.cloudflare.com, tess.ns.cloudflare.com |
| MX | 1 aspmx.l.google.com 5 alt1.aspmx.l.google.com 5 alt2.aspmx.l.google.com 10 alt4.aspmx.l.google.com 10 alt3.aspmx.l.google.com |
| TXT | 183374251-11850589 B37AB95EC3 facebook-domain-verification=7cr8hfn0y878zjxzgt4hbknwhxuk5y google-site-verification=142Thz3s7mzQJSHORKyyk0QndKtfKg9DakzAiCX6mDA google-site-verification=2cyRtTXa49V-EbiOs0W-MqSfKfp_smVNFF76A9YguLQ google-site-verification=3aAc3sRkZQKuVjCNI_RbHVKkmv-r4lhLXRlvHMR4_l8 google-site-verification=LLI4gMxLVK41gPBfxcDZqgyaUxFSMhsDE70-r-pXzso google-site-verification=Y09tg5UAyuUXsF8PZ-W92iDQaq9DVNJpuwwGiAZ4Sug google-site-verification=gET2bT39fxReuQ0vLGbVvA9TyxZOmEbpePtAX7xY6oA google-site-verification=hD-bBRWeNejlB37u_tZThoEBoyq3JcLLqog3Rl5Eqs8 google-site-verification=jpDzphFKQHfOP1m86Lu3xA2lyx4wZwx2DILni2KvWFc google-site-verification=x9nCBH6uz8yQAOEqpV3TqMnL9gI9nj1Iqz5OTJCi8Xg hj=232078-02102021 segment-site-verification=e7Zo5L9jKVjVcKRFi1acX9nyEQOnl6z3 stripe-verification=436470f5c9a974d3045706507ca0deef5fc07b3d82d6456180bce09ef19e... SPF v=spf1 include:helpscoutemail.com include:_spf.google.com include:mail.zendesk.c... |
| 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.
A+Redirect ChainNo redirects — direct accessPASS
https://buffer.com
75 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://buffer.com | 200 | 75 ms | HTTP/1.1 | cloudflare |
A+IPv6 ReadinessIPv6 reachable (2 ms)PASS
A+Crawlabilityrobots.txt present, sitemap with 222 URLsPASS
User-agent: *
Disallow: /add
Disallow: /ajax
Disallow: /button
Disallow: /docs-footer
Disallow: /free-trial
Disallow: /pricing-calculator
User-agent: bitlybot
Disallow: /
Sitemap: https://buffer.com/sitemap.xml
Sitemap: https://buffer.com/resources/sitemap.xml
A+URL Variantswww/non-www, trailing slash, HTTP→HTTPSPASS
www / non-www
Preferred variant: non-www
HTTP → HTTPS
Consistent
A+Domain Intelligencebuffer.com — via NameCheap, Inc., 29 years, 10 months oldPASS
103 days
October 27, 2026
89 days
Issued by Google Trust Services
29 years, 10 months
Registered October 28, 1996
Not enabled
Protects against DNS spoofing
Unknown
2606:4700::6812:6276
NameCheap, 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