cal.com

Observed Jul 18, 2026, 12:01 UTC (2d ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email byGoogle Workspace

Secured byGoogle Trust Services

Registered withGoDaddy.com, LLC

Also usesGoogle Search ConsoleHubSpot

IPv6 · 1 subdomain · dev_tools

Every line above is a signed observation. Check the math at the bottom of the page.

INFRASTRUCTURE MAPwhat cal.com actually stands on - every host below is a signed observation

cal.com

A / AAAA

104.18.0.62104.18.1.622606:4700::6812:13e2606:4700::6812:3e

Cloudflareserves the site

carter.ns.cloudflare.comlinda.ns.cloudflare.com

cloudflare.comanswers its DNS

aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comalt1.aspmx.l.google.com+1 more

Google Workspacereceives its email

TLS

cal.com

Google Trust Servicesissued its certificate

DNS Records

A 2

104.18.0.62
104.18.1.62

AAAA 2

2606:4700::6812:13e
2606:4700::6812:3e

MX 5

1aspmx.l.google.com
10alt3.aspmx.l.google.com
10alt4.aspmx.l.google.com
5alt1.aspmx.l.google.com
5alt2.aspmx.l.google.com

TXT 13

MS=ms14963960
MS=ms52513678
MS=ms56097149
MS=ms98316148
apple-domain-verification=BWqXqkqcByIoJVFD
asv=4a2ed4b7d84c58fa042be983b359aea7
cloudflare_dashboard_sso=fe7359c438ef1489671b4153ae275615
google-site-verification=ERZRBFsAZod6YY2WsYOsXCN2QTXsLAkqPluhPAWZORY
hubspot-developer-verification=MTUwNGIzOWYtYmYwMS00Y2IyLTg5YmEtNzEyZTU3NjczMGVj
openai-domain-verification=dv-2vLkO8g4fGLTXFv0O86S4VGh

NS 2

carter.ns.cloudflare.com
linda.ns.cloudflare.com

SOA 1

carter.ns.cloudflare.com dns.cloudflare.com

CAA 14

iodef "mailto:bailey@cal.com"
issue "amazon.com"
issue "comodoca.com"
issue "digicert.com; cansignhttpexchanges=yes"
issue "letsencrypt.org"
issue "pki.goog; cansignhttpexchanges=yes"
issue "sectigo.com"
issue "ssl.com"
issue "www.digicert.com"
issuewild "comodoca.com"

TLS Certificates (3)

Common Name	Issuer	Expires
`cal.com`	C=US, O=Google Trust Services, CN=WE1	Mon, 14 Sep 2026 15:26:52 +0000
`WE1`	C=US, O=Google Trust Services LLC, CN=GTS Root R4	Tue, 20 Feb 2029 14:00:00 +0000
`GTS Root R4`	C=BE, O=GlobalSign nv-sa, 2.5.4.11=Root CA, CN=GlobalSign Root CA	Fri, 28 Jan 2028 00:00:42 +0000

Subdomains (1)

external.cal.com

The proof

Signed at scan time. Check the math yourself. Every line above is part of one signed observation. Re-hash it and check the Ed25519 signature in your own browser; nothing leaves your machine.

Verify this receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for cal.com. It updates itself. It attests a signed observation - not that the site is safe.

<a href="https://domaindrift.io/t/cal.com">
  <img src="https://domaindrift.io/badge/cal.com.svg"
       width="300" height="64" alt="DomainDrift signed observations for cal.com">
</a>

Ed25519 Receipt

Receipt ID: 8568a2f1-e59c-4c79-b291-29c7c5793c4a
Output Hash: 949c0231bcc091652d770f9501ed3ab87438a18db1e2f7953b101f770ac41cfc
Signature: ed25519:f378bcee72add4569b25a0742c543f73dedc26c6cd253a88e79ec9d09aafed6438040542db7567c6a511e3889c35868a6afadb1caca508f9a922d6fa17ee1f01
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

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