cal.com

Observed 2026-07-14T01:23:48.255Z (14h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email byGoogle Workspace

Registered withGoDaddy.com, LLC

Also usesGoogle Search ConsoleHubSpot

IPv6 · 11 subdomains · 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

104.18.1.62104.18.0.622606:4700::6812:13e2606:4700::6812:3e

Cloudflareserves the site

linda.ns.cloudflare.comcarter.ns.cloudflare.com

cloudflare.comanswers its DNS

alt3.aspmx.l.google.comalt1.aspmx.l.google.comaspmx.l.google.comalt2.aspmx.l.google.com+1 more

Google Workspacereceives its email

HTTPS probe

ok Responding normally (2xx) 200 OK

HTTP status200

Servercloudflare

TLS protocolHTTP/3

TLS issuernot observed

Behind Cloudflareyes

Response time44 ms

DNS resolutionNOERROR

Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".

DNS Records

A 2

104.18.1.62
104.18.0.62

AAAA 2

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

MX 5

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

TXT 13

apple-domain-verification=BWqXqkqcByIoJVFD
MS=ms98316148
MS=ms14963960
openai-domain-verification=dv-2vLkO8g4fGLTXFv0O86S4VGh
MS=ms56097149
google-site-verification=ERZRBFsAZod6YY2WsYOsXCN2QTXsLAkqPluhPAWZORY
v=spf1 include:_spf.google.com include:sendgrid.net -all
MS=ms52513678
asv=4a2ed4b7d84c58fa042be983b359aea7
hubspot-developer-verification=MTUwNGIzOWYtYmYwMS00Y2IyLTg5YmEtNzEyZTU3NjczMGVj

NS 2

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

SOA 1

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

CAA 14

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

TLS Certificates (0)

None.

Subdomains (11)

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: 419b2348-2a3a-4323-bc32-3760e287d0a3
Output Hash: 20e63f7f1e519c9d8685b4684a63df19a6fc67a44acff43489b112e103e5a84b
Signature: ed25519:1f2ae87b3f4870af6cd9a3fe07b4a27ae47ede62bd821d7b0f2ce27161b55ad0599e843dcc9769bc759b197e9a21edb1514b65545c67a5eeeec725ea0f38390f
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

Verify this in your browser

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