HOW.IS
?

How is simpli.fi?

Looks fine risk 0/100

Registered 16 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 114 ms.

Why

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

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

How simpli.fi looks right now
The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.
Site
200
114 ms
HTTPS
72 d
left on a Let's Encrypt certificate
Age
16 years
registered 2011-03-09
Blocklists
0
listings across 5 lists

Everything we looked at

DNS records5 record types
A141.193.213.30
MX10 alt3.aspmx.l.google.com
5 alt1.aspmx.l.google.com
1 aspmx.l.google.com
10 alt4.aspmx.l.google.com
5 alt2.aspmx.l.google.com
NSdns3.simpli.fi
dns6.simpli.fi
dns4.simpli.fi
dns1.simpli.fi
dns2.simpli.fi
dns5.simpli.fi
TXTadobe-idp-site-verification=d09d2859d3b114c3c0bac5503f70b062058ee3e7f0bc20d3eb456b9cf5459e51
make-domain-verification=ea564988-8fbd-4d50-9193-e67d9a635266
google-site-verification=zp0Kl27isBCn5nTZ2jw4PLNnxxxdejKtalbf78udcEI
atlassian-domain-verification=XnZdmxW944IVnI/XmKjBQMZ513ysPDbqgZ/kOAo/+3xRZrrUPPpXlSACdHqKlgR8
miro-verification=0167923452c102b39f5f13e1af467525bf94a01f
bw=IOe97UwQ6ByqNZxnXGBLR9EDHJ4lXZTkDLYpnrOeVQ7b
slack-domain-verification=yCv5hWeXdV6WtPctn8gMe0WxjBx6fLF2w8PYx4gr
apple-domain-verification=awZHO3ZstgGUNVwi
MS=ms87473197
anthropic-domain-verification-y82myg=220FtQbGRiYvz7aig0fpuO2hQ
v=spf1 include:_u.simpli.fi._spf.dmarcla.com include:mail.zendesk.com ~all
docusign=16e5d26b-1579-4b46-a8b3-655102a5bc1e
google-site-verification=tdLBKZUl2ebpDO4rNKbQmSeZSF5okXnEK-zzez3i7y8
creatopy-domain-verification=84e4ebdc-1261-4e87-8612-fa8c80cd28c2
postman-domain-verification=b7fb2c340c200811fd282eda4b53ba5f43b64082cff51bee2bb7080454f64251385f9bbb183c379a2ba29d556299ffec4a1c3240c8e99fd79c385ea21ae89a22
zapier-domain-verification-challenge=d4561bf1-b081-4a16-8d7b-fe1f3504282c
google-site-verification=PqiSYSIlY0CO0vegXA59Fsb3dqaII2BCZcnW7mtduZ8
have-i-been-pwned-verification=9f04eb3f224840679cfbf3fcdb452572
google-site-verification=Na5zOCy47L-eMKN6YEWwpfzHKlZW8M8d_5259Cj6Zqg
google-site-verification=ReNRWxv0stOfG_tJfy0VasBd0KiDAxgXIYyGg_KSZOs
hubspot-domain-verification=ZTc5YTlkNDItMTQ3YS00MmJlLTgyYmQtZTQ4YTc4ODYyNTVi
liveramp-site-verification=jK_Z4HRQMUNQsg0nwxvl_n0bV8yBjh9R6nRQ44Vsme0
wiz-domain-verification=00a560409ccd118cc105da657b4f136b7b1c3843a15e9ff4161db91f5bcf3cd6
google-site-verification=ALzZTSyy7Cs_tcebzepzRPTC0N6hjwZB08XoX8R4hhI
google-site-verification=I5vGmyPa-_TVs75TlFRcc7xgkGcOyekqlbuzjGJUcLE
onetrust-domain-verification=f93f0d0d2cfb4a25b85dc3b9f905cb58
cursor-domain-verification-gjdea5=N1iuPDPGR5DE5ofuE0mqUsr7Q
google-site-verification=yS6MJfIAYkeL_LFtqenI1UcPmJKjKWSjl4M7UARtDkU
docker-verification=bf881b68-5340-443e-86f5-7d3d5d64dfc8
openai-domain-verification=dv-gv3gD71Bcccqw82HyKvwI9zT
jetbrains-domain-verification=df8pazcz8r5x40gmdha5aj06p
creatopy-domain-verification=e07348b1-2489-4ede-801f-2502c5dfed13
atlassian-sending-domain-verification=bae63208-ddcf-4687-8040-8d62571ffa00
_u3dc6kh0p068wqy188pu0zcbf93zctc
reachdesk-verification=AcmBTBCpsDkyGA0F6zVolG2GZVkAIwhi0h2ylXrzwyMRZXcZsGDVrC9yfBOC9GRE
00DA0000000I8Lu=1TBVb000000001d
jamf-site-verification=d09WAmjW8Fv9dqTn5fPaTQ
CAA{'type': 'CAA', 'issue': 'amazon.com', 'critical': 0}
{'type': 'CAA', 'critical': 0, 'issuewild': 'amazon.com'}
{'type': 'CAA', 'issue': 'pki.goog', 'critical': 0}
{'type': 'CAA', 'issue': 'letsencrypt.org', 'critical': 0}
{'type': 'CAA', 'critical': 0, 'issuewild': 'digicert.com'}
{'type': 'CAA', 'issue': 'digicert.com', 'critical': 0}
{'type': 'CAA', 'critical': 0, 'issuewild': 'amazonaws.com'}
{'type': 'CAA', 'iodef': 'mailto:it@simpli.fi', 'critical': 0}
Registrationregistrar not reported
registered2011-03-09
expires2029-03-15
last changed2024-04-18
countryIreland
nameserversdns1.simpli.fi
dns3.simpli.fi
dns2.simpli.fi
dns4.simpli.fi
dns5.simpli.fi
dns6.simpli.fi
statusactive
registered 2011-03-09expires 2029-03-15
HTTPS certificate72 days left
validyes
issuerLet's Encrypt
coverssimpli.fi
protocolTLSv1.3
issued 2026-10-15expires 2027-01-13
DNSSECinsecure

Domain is not signed with DNSSEC

. → fi → simpli.fi
Email authenticationexcellent
SPFpass v=spf1 include:_u.simpli.fi._spf.dmarcla.com include:mail.zendesk.com ~all
DMARCpass policy reject
DKIMfound: default, k1, s1, s2

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

Security scoregrade B · 170/205
Basic Security
10/40missing: DNSSEC Enabled, Nameserver Diversity
Record Security
45/45missing: DKIM Presence
Advanced Security
20/25missing: IPv6 Support
Domain Reputation
50/50
Threat Detection
45/45missing: Domain Age Check
Blocklists0 listings · 5 lookups
SURBL MultidomainURIBL MultidomainSpamCop141.193.213.30Barracuda141.193.213.30UCEPROTECT Level 1141.193.213.30

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=simpli.fi" \ -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=simpli.fi"

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

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

Watch simpli.fi. 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