Skip to content
Gridlode
Rank #1,843Updated November 10, 2026

cal.com

Cal.com | Scheduling Software for Online Bookings

cal.com is registered with GoDaddy.com, LLC since May 16, 1997 (29.5 years). The registration expires on May 17, 2034. The site runs on Next.js, React, Cloudflare and 3 other technologies. Its email security grade is B. Its SSL certificate is issued by Google Trust Services and is valid for 86 more days.

Domain age
29.5 yrs
Technologies
6
Email security
B
SSL days left
86

Registration

RegistrarGoDaddy.com, LLC
IANA ID146
RegisteredMay 16, 1997
ExpiresMay 17, 2034
UpdatedMay 25, 2024
Statusclient delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited
Name serverscarter.ns.cloudflare.com, linda.ns.cloudflare.com
DNSSECNot signed

DNS records

TypeValueTTL
A104.18.0.62237
A104.18.1.62237
MXaspmx.l.google.com 1300
MXalt3.aspmx.l.google.com 10300
MXalt4.aspmx.l.google.com 10300
MXalt1.aspmx.l.google.com 5300
MXalt2.aspmx.l.google.com 5300
NScarter.ns.cloudflare.com86400
NSlinda.ns.cloudflare.com86400
CAAiodef 0 mailto:[email protected]300
CAAissue 0 amazon.com300
CAAissue 0 comodoca.com300
CAAissue 0 digicert.com; cansignhttpexchanges=yes300
CAAissue 0 letsencrypt.org300
CAAissue 0 pki.goog; cansignhttpexchanges=yes300
CAAissue 0 sectigo.com300
CAAissue 0 ssl.com300
CAAissue 0 www.digicert.com300
CAAissuewild 0 comodoca.com300
CAAissuewild 0 digicert.com; cansignhttpexchanges=yes300
CAAissuewild 0 letsencrypt.org300
TXTMS=ms14963960300
TXTMS=ms52513678300
TXTMS=ms56097149300
TXTMS=ms98316148300
TXTWP41PVdUGcSPtY_ZzVehPm73J0E300
TXTapple-domain-verification=BWqXqkqcByIoJVFD300
TXTasv=4a2ed4b7d84c58fa042be983b359aea7300
TXTcloudflare_dashboard_sso=fe7359c438ef1489671b4153ae275615300
TXTgoogle-site-verification=ERZRBFsAZod6YY2WsYOsXCN2QTXsLAkqPluhPAWZORY300
TXTgoogle-site-verification=y4NVaLzvuBemkMk20Hqr6xu6iHa-UFDrbJg0pgPtG_Y300
TXThubspot-developer-verification=MTUwNGIzOWYtYmYwMS00Y2IyLTg5YmEtNzEyZTU3NjczMGVj300
TXTopenai-domain-verification=dv-2vLkO8g4fGLTXFv0O86S4VGh300
AAAA2606:4700::6812:3e105
AAAA2606:4700::6812:13e105

Technology stack

Hosting
JavaScript framework
Programming language
Security

SSL certificate

ValidValid
IssuerUS, WE1, Google Trust Services
ExpiresFebruary 4, 2027
Days remaining86
ProtocolTLSv1.3
Namescal.com, proxy-test.cal.com, *.proxy-test.cal.com

Email security

BScore 81/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
  • warnNo MTA-STS: mail sent to you can be downgraded to an unencrypted connection.
  • warnNo TLS-RPT record, so you won't hear about failed encrypted deliveries.
  • goodSPF record found.
  • goodSPF ends with -all: servers you have not listed are rejected (hard fail).
  • goodDMARC policy is quarantine: failing mail goes to spam. Move to p=reject for full protection.
  • goodDMARC aggregate reports are sent to mailto:[email protected].
  • goodDKIM keys found (selector: google, s1, s2).
  • good5 MX record(s) found. Mail is handled by Google Workspace.
  • goodBIMI record found: supporting inboxes can show your brand logo.

Homepage metadata

TitleCal.com | Scheduling Software for Online Bookings
DescriptionThe highest-rated scheduling system that helps you grow your business and better find time.
Languageen
Canonicalhttps://cal.com
Structured dataOrganization, SoftwareApplication, WebSite
IndexableYes
Word count3201

About cal.com

Who is the registrar of cal.com?

cal.com is registered with GoDaddy.com, LLC (IANA ID 146).

When does cal.com expire?

The current registration of cal.com expires on May 17, 2034. It was first registered on May 16, 1997.

What technology does cal.com use?

We detected 6 technologies on cal.com, including Cloudflare, Vercel, Next.js, React, Node.js, HSTS.

Does cal.com protect its email with SPF and DMARC?

cal.com scores 81/100 (grade B) for email security. No MTA-STS: mail sent to you can be downgraded to an unencrypted connection. No TLS-RPT record, so you won't hear about failed encrypted deliveries.

What are the name servers of cal.com?

cal.com uses carter.ns.cloudflare.com, linda.ns.cloudflare.com.