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, 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
User-agent: *
Disallow: /embed/*
Disallow: /intent/*
Disallow: /preview/*
Disallow: /api/*
Disallow: /pdf/*
Disallow: /wrap_up/*
Disallow: /search
Disallow: /login?*
Disallow: /signup?*
Disallow: /m/*/archive
# /:urlname/~
Disallow: /*/archives
Disallow: /*/archives/*
Disallow: /*/followers
Disallow: /*/followings
Disallow: /*/likes
Disallow: /*/magazines
Disallow: /*/menu/*
Disallow: /*/message
Disallow: /*/terms/specified
User-agent: Googlebot
User-agent: bingbot
User-agent: Yeti
Disallow: /*/message
Disallow: /embed/*
Disallow: /*/archives
Disallow: /*/archives/*
Disallow: /*/terms/specified
Disallow: /api/v2/boards/*/reserved_posts
Disallow: /api/v2/attachments
Disallow: /*/rss
Disallow: /intent/*
Disallow: /wrap_up/*
Disallow: /preview/*
Disallow: /search
User-agent: Twitterbot
Disallow: /*/message
Disallow: /*/terms/specified
Disallow: /*/menu/*
Disallow: /embed/*
Disallow: /intent/*
Disallow: /preview/*
Disallow: /api/*
Disallow: /pdf/*
Allow: /wrap_up/*
User-agent: Livelapbot
Disallow: /
User-agent: Megalodon
Disallow: /
User-agent: ia_archiver
Disallow: /
Sitemap: https://note.com/sitemaps/production/note.com/sitemap.xml.gz
BTLS Certificate Expiry & Recommendations228 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
A+DNS Records4 A records, 80 ms lookupPASS
| A | 3.162.247.12, 3.162.247.121, 3.162.247.20, 3.162.247.67 |
| AAAA | — |
| CNAME | — |
| NS | ns-1021.awsdns-63.net, ns-1247.awsdns-27.org, ns-162.awsdns-20.com, ns-1877.awsdns-42.co.uk |
| MX | 1 aspmx.l.google.com 5 alt1.aspmx.l.google.com 5 alt2.aspmx.l.google.com 10 alt3.aspmx.l.google.com 10 alt4.aspmx.l.google.com |
| TXT | EbgQSQhop8ygYvfrHStLM87JCGuAzQbC0k9I3N5AAB77 _globalsign-domain-verification=08GKDthDl99Ikpm4_3hzGtgQl-YJdyaWrz1utLAqrP google-gws-recovery-domain-verification=49176329 google-site-verification=AB4yi7w4y23KzwEQt6fA12eoLYYlS5v17phlGV2CUAw google-site-verification=XNkxM919oN-6xLsHdJ6jxkRqoKI0vnsNnJv5etzuCOY google-site-verification=boaWYKsACsVcndmWx-yUMS_hwxTpJ_RBpy7yum3ZdxY SPF v=spf1 include:amazonses.com include:mail.zendesk.com -all |
| 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://note.com
385 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://note.com | 200 | 385 ms | HTTP/1.1 |
A+URL Variantswww/non-www, trailing slash, HTTP→HTTPSPASS
www / non-www
HTTP → HTTPS
Consistent
A+Domain Intelligencenote.com — via GoDaddy Online Services Cayman Islands Ltd., 31 years, 5 months old, hosted on AWSPASS
658 days
May 4, 2028
228 days
Issued by GlobalSign nv-sa
31 years, 5 months
Registered May 3, 1995
Not enabled
Protects against DNS spoofing
AWS
ASN AS16509
3.162.247.67
GoDaddy Online Services Cayman Islands Ltd.
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