Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.FIPv6 ReadinessActionIPv6 records exist but unreachableFIX
Having AAAA records but an unreachable server is worse than no AAAA — clients may experience delays before falling back to IPv4.
Advertising IPv6 (AAAA records) without a reachable server means IPv6-preferring clients silently fail every connection.
Learn more ▾ ▴
Modern browsers prefer IPv6 if AAAA exists (Happy Eyeballs algorithm). If the IPv6 server isn't reachable, browsers fall back to IPv4 — but with seconds of added latency per request. Either fix IPv6 reachability or remove the AAAA records.
Source: RFC 8305 (Happy Eyeballs)
BRedirect Chain1 redirect(s), 1081 ms totalREVIEW
https://calm.com
254 ms · HTTP/1.1
https://www.calm.com
827 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://calm.com | 308 | 254 ms | HTTP/1.1 | istio-envoy |
| 2 | https://www.calm.com | 200 | 827 ms | HTTP/1.1 | istio-envoy |
See the visual redirect chain in the HTTP Probe tab →
BURL Variantswww/non-www, trailing slash, HTTP→HTTPSREVIEW
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
Consistent
BTLS Certificate Expiry & Recommendations272 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
A+DNS Records4 A records, 119 ms lookupPASS
| A | 18.173.121.8, 18.173.121.36, 18.173.121.111, 18.173.121.52 |
| AAAA | 2600:9000:25f2:2e00:6:4d52:3e80:93a1, 2600:9000:25f2:8800:6:4d52:3e80:93a1, 2600:9000:25f2:bc00:6:4d52:3e80:93a1, 2600:9000:25f2:2200:6:4d52:3e80:93a1, 2600:9000:25f2:b000:6:4d52:3e80:93a1, 2600:9000:25f2:f200:6:4d52:3e80:93a1, 2600:9000:25f2:6a00:6:4d52:3e80:93a1, 2600:9000:25f2:8400:6:4d52:3e80:93a1 |
| CNAME | — |
| NS | ns-1079.awsdns-06.org, ns-2021.awsdns-60.co.uk, ns-249.awsdns-31.com, ns-894.awsdns-47.net |
| MX | 1 aspmx.l.google.com 5 alt2.aspmx.l.google.com 5 alt1.aspmx.l.google.com 10 alt3.aspmx.l.google.com |
| TXT | 6D505B9696E 9DB5B8A191 MS=ms32411378 ZOOM_verify_Gh37TEYdUQKS8nx8xfSAw9 adobe-idp-site-verification=33f144e293d2c4c095691d6e621c8cde3d22631a19b85eefe9f0... anthropic-domain-verification-nqncbc=i4YvaPl6ysSp3p4Cmq5kIFMAR apple-domain-verification=ioaWfZWmUeV4qc1c atlassian-domain-verification=82xq1qb7wUSi2vWsKvupDTHXUR8yepHgI1h1Fym/7otTva81gW... atlassian-domain-verification=e+7kgwIkMQ5tEKEgdm+XsjfI3Ht/KWyKcXMhuTYaMJzuUjsM5r... docusign=7ed434e9-6e4f-44a5-9121-74cbe8f4eed9 drift-domain-verification=3720bf8a39493f5d34239ab05dff2f6d7bb6c33fa75f8ba5d4f248... dropbox-domain-verification=n6yv8o6ikotw facebook-domain-verification=d08wtj21t93m3sw57qxo5d1sz837in google-site-verification=-Av2OyVUcPmdCUcC0jjJAvbwICYnpwFdYJn-AJhGTCc google-site-verification=BG7T7v0Kg3DXJ7-T9s7Qp1wU44y5EMmbzAzM741gjv4 google-site-verification=FkN-0f7ENWINaqpNpTaRyMKuOAJca2y0TCQ4sEOWj-A google-site-verification=LF7HOPOq7TjDLwtO1NjdsXWJfbyOCdVM9Wvg4bP9qdo google-site-verification=RDtPBpq0wVoDGy5X8KuAHxN1uwgJe9hWeKbHbdybZUI google-site-verification=crqMBRetCRdzUYR7-2v0OTN71Lse0mY24sCb0LDxbZc google-site-verification=p2MPXeW9XoNBdB2PY2CJnIsjtVtArRnQdBosHzab-hI include:email.influitive.com klaviyo-site-verification=SAUtQ9 mailerlite-domain-verification=09aa5e553148d2c20aa1b221c8c57bd1275408f8 notion_verify_0W]oNcf?YvYgMsyjY+Diqp)WcPky*Xnugu>taW7ecAFCeabTRv29WMJr21fgd~r)%*... openai-domain-verification=dv-5oiCViMyno8qR4wKuVpRnd1j slack-domain-verification=Bhf3FxX2jTWYOQyv51KrtkMeIusJ21THj20B6Uv3 stripe-verification=26ceba8dc60f5152fd5dc92083b6dab808ba00b5e4a5792e9648dd6ba70e... SPF v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email include:_spf.google.com ... zapier-domain-verification-challenge=f60b89c0-75f9-4b0d-801d-d2110d7c314e |
| 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+Crawlabilityrobots.txt present, sitemap with 1 URLsPASS
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: /ping
Disallow: /guest-pass
Disallow: /lj
Disallow: /campaigns
Disallow: /new-member-offer
Disallow: /special-welcome-offer
Disallow: /black-friday-annual-offer-2020
Disallow: /black-friday-lifetime-offer-2020
Disallow: /jay
Disallow: /jay/signup
Disallow: /jay/download
Disallow: /j
Disallow: /special-refund-request
Disallow: /ios-subscribe
A+Domain Intelligencecalm.com — via Moniker Online Services LLC, 31 years, 2 months old, hosted on AWSPASS
1122 days
July 10, 2029
272 days
Issued by Amazon
31 years, 2 months
Registered July 11, 1995
Not enabled
Protects against DNS spoofing
AWS
ASN AS16509
18.173.121.111
Moniker Online Services LLC
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