HOW.IS
?

How is calendly.com?

Looks fine risk 0/100

Registered 14 years ago, on no blocklists we checked, valid HTTPS, the site answered 200 in 107 ms.

Why

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

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

How calendly.com looks right now
The home page, rendered by how.is in a sandboxed browser. Nothing on it is clickable here.
Site
200
107 ms
HTTPS
67 d
left on a Google Trust Services certificate
Age
14 years
registered 2013-02-26
Blocklists
0
listings across 5 lists

Everything we looked at

DNS records6 record types
A172.64.146.81
104.18.41.175
AAAA2606:4700:4403::ac40:9251
2606:4700:440d::6812:29af
MX30 aspmx2.googlemail.com
10 aspmx.l.google.com
20 alt2.aspmx.l.google.com
30 aspmx3.googlemail.com
20 alt1.aspmx.l.google.com
NShope.ns.cloudflare.com
roan.ns.cloudflare.com
TXTgoogle-site-verification=CT9vkalOAxTSSlMkSYuif3PPR9IfW9wOMDYCpHV8-pQ
apple-domain-verification=eAu2dlDrzmPvVHPg
pardot906932=75d30f44d6d6e89f6ea5ce36bff2d547056f93c17f7034160851f23f09a2448a
cursor-domain-verification-tdtnd4=i4bl9JEOFE1VOQbkiMkpIfGQZ
carta-domain-verification-p6kprv=Hf8pYNQgbK7i64r9SjTorb0sB
ePwEbxX6T8GLeUY2
google-site-verification=vvI2V5xXtswv19eoBHMvUfLriiS1W3uTeOrHdusW3AI
openai-domain-verification=dv-60PIOwHK0eRDfc2VpmSJ3XY3
pardot986361=84e628bbfec0a11d5baf3b0d9631a46a0e5f6801076cfc694ca8631fc86ee0b2
parallels-domain-verification=25c15af2f44f426fa520c0f140c5f3b884327a61390a439495a1e7fa2ee9cf92
docusign=26d57faa-4bf8-45cd-866b-a36fdf86e214
google-site-verification=A_dMlj5RIS-42bZbR1vzM__GBhqE_l-CNAt4kHL39K8
adobe-idp-site-verification=db378e2b6b1fbb203e2fa8efb4daacdd0b5837d143bd0020257d69866acc6b55
citrix-verification-code=ecbbb3b7-9c8c-4b46-81a7-ecd2c6ff42b9
06FB0F4CCD
uber-domain-verification=7898f9ad-15df-4820-b779-92b2bec7858b
zoom-domain-verification = afd6de76-b579-11ee-a506-0242ac120002
v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email include:_spf.google.com include:mktomail.com ~all
google-site-verification=fnhE2QNlMBUWS8UBhCtO4N2xU1Hv5Baq_nAGRKrDOS8
atlassian-domain-verification=HeV4orUbu8ZU/Et3BdlguiFnoc5TqgI5owEFFTeBLYX6Lc6BZK4D0ru001VnnLBk
jetbrains-domain-verification=1k4crjxnjx7wtlhja236t8jcn
google-site-verification=l9ghJl2k5pCmyzxgB-u7zk1WdLHRxZ8Gev7eo7j6tlw
pendo-domain-verification=4dace321-4517-49a6-b51a-ec3478a24002
loom-site-verification=dfbd3882de7e42d39aa63ac12d8f403e
doit-verify295235
pardot906932=d83df604fb40dd187d6c3def3b29591478a195def3dd9223df3d64f3fbabfd0c
logmein-verification-code=b644b816-e7f4-45df-8215-6ba8db765fe9
google-site-verification=D6kljg6Ozbxz7wkQHTu9bBD58dH48qXc8jbrSvdix20
MS=ms26783193
calendly-site-verification=JLJojO5SGco45xeUJrgD30rJACtPP9JsvM1TDRUSa
postman-domain-verification=987281567d45964ffbd83330939d1731ef9199ac6408ad6a641d49813877d64f73114ad25d917bbe3babf4cf554437d1034afcd089f0faf69bbd9c6d9473df5b
google-site-verification=cDMxTqEGKRREjpULRkV3kxo9fUh9AAOy68UKi-sWFDA
TAILSCALE-nNYYC0vC9TISAvboCaQA
hubspot-developer-verification=MDZjM2Q5Y2QtYjIxOS00ZTllLWIzYzEtMzI2YzYwZTQxY2My
box-domain-verification=a9f4a950cfdfd3b9cea802a96528ccffbff61184fbb8363037b8cb9eeb1e454c
slack-domain-verification=025CLyam48F5ppYztUuMl2Ue4prf01SVmyM06BYy
jamf-site-verification=iYyCRUNw7_AXFUC7zaLiFw
miro-verification=c546481c526d7d0fca4b0def39a0700eeb64f077
pardot906932=62a94517bea65a4a146e19a380714f589e54114888b639e208605e1b6b445f47
google-site-verification=spiNl55E3iYMilE9lM2OB67FTeyJVzNJdYsr8YreMiE
MS=ms75932089
MS=ms75363840
h1-domain-verification=jcUKHuDrikH5HZfj3S3op6kzWDJLgLg3d7pmxsKGupBKUPm1
facebook-domain-verification=oiiy3kxhh6i3mzo3tecoolwkzpsqos
google-site-verification=4IlbzuraJEuEWHXSF1ealAXGwgl-01bcFI9b6KiPrzw
onetrust-domain-verification=0bf92d345265462eb0a4ad38c7b55188
qase-ca7eb2da8082aef5bed402accf262d2bca41fd30
stripe-verification=7708116a2a258908ad3dde9ebc9ab342c43b7000f582962f69a7fdcab307abab
google-site-verification=0W2XISvsFG0b1de6rAJqnGOZpeyHioDOc0fCPpkcga0
CAA{'type': 'CAA', 'critical': 0, 'issuewild': 'godaddy.com'}
{'type': 'CAA', 'critical': 0, 'issuewild': 'ssl.com'}
{'type': 'CAA', 'critical': 0, 'issuewild': 'sectigo.com'}
{'type': 'CAA', 'issue': 'digicert.com; cansignhttpexchanges=yes', 'critical': 0}
{'type': 'CAA', 'issue': 'godaddy.com', 'critical': 0}
{'type': 'CAA', 'issue': 'amazon.com', 'critical': 0}
{'type': 'CAA', 'critical': 0, 'issuewild': 'amazon.com'}
{'type': 'CAA', 'iodef': 'mailto:platform@calendly.com', 'critical': 0}
{'type': 'CAA', 'issue': 'pki.goog; cansignhttpexchanges=yes', 'critical': 0}
{'type': 'CAA', 'critical': 0, 'issuewild': 'letsencrypt.org'}
{'type': 'CAA', 'critical': 0, 'issuewild': 'pki.goog; cansignhttpexchanges=yes'}
{'type': 'CAA', 'issue': 'letsencrypt.org', 'critical': 0}
{'type': 'CAA', 'issue': 'comodoca.com', 'critical': 0}
{'type': 'CAA', 'critical': 0, 'issuewild': 'digicert.com; cansignhttpexchanges=yes'}
{'type': 'CAA', 'issue': 'ssl.com', 'critical': 0}
{'type': 'CAA', 'critical': 0, 'issuewild': 'comodoca.com'}
{'type': 'CAA', 'issue': 'sectigo.com', 'critical': 0}
RegistrationGoDaddy.com, LLC
registrarGoDaddy.com, LLC
registered2013-02-26
expires2027-02-26
last changed2022-09-13
nameservershope.ns.cloudflare.com
roan.ns.cloudflare.com
statusclient delete prohibited
client renew prohibited
client transfer prohibited
client update prohibited
registered 2013-02-26expires 2027-02-26
HTTPS certificate67 days left
validyes
issuerGoogle Trust Services
coverscalendly.com, ablink.send.calendly.com, *.calendly.com, ablink.e.calendly.com
protocolTLSv1.3
issued 2026-10-03expires 2027-01-01
DNSSECsecure

Domain is properly signed — chain validated by an independent validating resolver

. → com → calendly.com
Email authenticationexcellent
SPFpass v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email include:_spf.google.com include:mktomail.com ~all
DMARCpass policy quarantine
DKIMfound: google, k1, s1, s2

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

Security scoregrade A · 175/205
Basic Security
10/40missing: DNSSEC Enabled, Nameserver Diversity
Record Security
45/45missing: DKIM Presence
Advanced Security
25/25
Domain Reputation
50/50
Threat Detection
45/45missing: Domain Age Check
Blocklists0 listings · 8 lookups
SURBL MultidomainURIBL MultidomainSpamCop172.64.146.81Barracuda172.64.146.81UCEPROTECT Level 1172.64.146.81SpamCop104.18.41.175Barracuda104.18.41.175UCEPROTECT Level 1104.18.41.175

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=calendly.com" \ -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=calendly.com"

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

Watch calendly.com. 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