HOW.IS
?

How is notion.so?

Looks fine risk 0/100

Registered 12 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 131 ms.

Why

02050100
finecarefulhigh risk
  • ·Nothing in the checks added risk.

Rule-based: domain age, blocklists, TLS. A heuristic, not a guarantee.

How notion.so looks right now
The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.
Site
200
131 ms · ends at www.notion.com
HTTPS
69 d
left on a Google Trust Services certificate
Age
12 years
registered 2015-03-31
Blocklists
0
listings across 5 lists

Everything we looked at

DNS records4 record types
A208.103.161.17
208.103.161.1
208.103.161.2
208.103.161.16
AAAA2602:f79a:0:1::1
2602:f79a:0:1::2
2602:f79a::2
2602:f79a::1
NSdana.ns.cloudflare.com
woz.ns.cloudflare.com
TXT_eohaffzltripfzavo0ehlmi84k0tkxw
facebook-domain-verification=2agf76ffad9vxlxya597jrzil7xoxf
google-site-verification=01Xid8U6cE4LuiG2OeRTL-hnDC9MxKvVD6mAgAS51Oo
google-site-verification=LBOGI6TChsA_9vwaJYLU7RXgunDGAWKG0fcHxiU2-o4
google-site-verification=U2r6h9FWkKMadZDxW94daNJ1YUGXP-9_tJ7PUYfYz4c
google-site-verification=_aahlmtDiPlbg224pU3M_8w9Ka-3tcGUmBd6ZW052AU
proxy-ssl.webflow.com
v=spf1 ~all
Registration1API
registrar1API
registered2015-03-31
expires2027-03-31
last changed2026-04-24
nameserversdana.ns.cloudflare.com
woz.ns.cloudflare.com
statusclient transfer prohibited
DS automation disabled
NS automation disabled
registered 2015-03-31expires 2027-03-31
HTTPS certificate69 days left
validyes
issuerGoogle Trust Services
coversnotion.so, *.notion.so, *.dev.notion.so, *.stg.notion.so, *.www.notion.so
protocolTLSv1.3
issued 2026-10-11expires 2027-01-10
DNSSECinsecure

Domain is not signed with DNSSEC

. → so → notion.so
Email authenticationfair
SPFpass v=spf1 ~all
DMARCpass policy quarantine
DKIMnone of 1 common selectors

Whether mail claiming to be from this domain can be checked as genuine.

Security scoregrade B · 150/205
Basic Security
10/40missing: DNSSEC Enabled, Nameserver Diversity
Record Security
30/45missing: CAA Records, DKIM Presence
Advanced Security
15/25missing: Mail Server Configuration
Domain Reputation
50/50
Threat Detection
45/45missing: Domain Age Check
Blocklists0 listings · 14 lookups
SURBL MultidomainURIBL MultidomainSpamCop208.103.161.17Barracuda208.103.161.17UCEPROTECT Level 1208.103.161.17SpamCop208.103.161.1Barracuda208.103.161.1UCEPROTECT Level 1208.103.161.1SpamCop208.103.161.16Barracuda208.103.161.16UCEPROTECT Level 1208.103.161.16SpamCop208.103.161.2Barracuda208.103.161.2UCEPROTECT Level 1208.103.161.2

Green: clean. Red: listed. Grey: the list did not answer.

Ask it yourself

Agents get this as data. Bought through the API, the checks behind this page cost $0.070: profile $0.025 + trust $0.020 + screenshot $0.020 + site status $0.005.

curl "https://how.is/v1/domain/trust?domain=notion.so" \ -H "Authorization: Bearer $HOWIS_KEY" # or pay per call in USDC (x402), no key: the 402 tells your agent the price curl -i "https://how.is/v1/domain/profile?domain=notion.so"

MCP: add https://how.is/mcp to Claude, Codex or Cursor (one-line install) and ask for domain_trust on notion.so. Reference: /llms.txt.

IPv6. IPv6 readiness grade for notion.so Does notion.so work over IPv6? See the live check on aaaa.bot — website, mail and nameservers, graded A–F.

Watch notion.so. DNS read at the source every 5 minutes; certificate, blocklists and expiry every 6 hours. You get an email only when something changes.

Watch — $1 / 30 days