Audit: notion.so
Checking…
- Reachable 1% of the last 24 hours
- Last time we couldn't reach it: Sep 13, 2026
- Outages cost you traffic and rankings while they last, and they rarely happen while you are watching.
On-page SEO
Crawlability
TLS & security
Network
100/100- Hostname resolves to an A record 208.103.161.2
- MX records valid + reachable
- SPF record present v=spf1 ~all
- DMARC record present
- DMARC policy enforced p=quarantine
- DKIM key published Tried default + common selectors; supply your real selector at /dkim-lookup
DNS
92/100- A records resolve
- NS records present
- MX records present
- DNS resolvers agree on the same A record 100% of 12 resolvers agree
- Domain registration not expiring soon 190 days left
- Domain is established 11y 5m 18d (2015-03-31)
What changed
Nothing has changed on notion.so since we started watching it.
Certificates expire, DNS gets edited, a header goes missing in a deploy. Prove the domain is yours and we watch it on a schedule — free — and email you the moment something moves, so you hear it from us instead of from a customer.
Subdomains discovered 🔒 Pro
70 via Certificate Transparency
We found 70 subdomains for
notion.so via Certificate Transparency logs.
Unlock the subdomain list
- See every subdomain discovered via crt.sh CT logs
- Click any subdomain to audit it (separate report)
- Useful for security recon + asset inventory
A certificate that expires on Tuesday should not wait until Friday. Prove a domain is yours and we check it free, once a week, emailing you anything that changed. Pro checks it once a day, looks at every host on the domain, and keeps 365 days of history — so you hear about a problem in hours rather than days.
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