indexo.dev

classtime.com

.com crawl

First seen 2026-04-30 · Last seen 2026-04-30 · ok HTTP/1.1 200 1662 ms crawled 2026-05-08

US · 34.95.107.246 · AS396982 Google LLC

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title
Classtime
Description
Classtime is a solution for classrooms that complements in-class teaching with immediate feedback on students’ level of understanding.

Technology

Server
nginx
CMS
WordPress
Fonts
  • Google Fonts

Third-party hosts loaded (2)

  • fonts.googleapis.com×1
  • fonts.gstatic.com×1

Contact

Address
Uraniastrasse 31, 1st Floor, 8001, Zurich, Zurich, CH

Registration

Registrar
GoDaddy.com, LLC
Created
1997-09-25
Expires
2026-09-24 127 days left
Updated
2025-09-24
Name servers
  • ns-cloud-b1.googledomains.com
  • ns-cloud-b2.googledomains.com
  • ns-cloud-b3.googledomains.com
  • ns-cloud-b4.googledomains.com

DNS records live

NS
  • ns-cloud-b1.googledomains.com
  • ns-cloud-b2.googledomains.com
  • ns-cloud-b3.googledomains.com
  • ns-cloud-b4.googledomains.com
MX
  • 10 aspmx.l.google.com
  • 20 alt1.aspmx.l.google.com
  • 30 alt2.aspmx.l.google.com
  • 40 aspmx2.googlemail.com
  • 50 aspmx3.googlemail.com
TXT
Show 9 TXT records
  • pinterest-site-verification=6b873c97b508f47c379b75cc8e736457
  • brevo-code:039f641a790e72f2a69bd7c6676867a7
  • MS=ms50816791
  • MS=ms41533158
  • cl_verification=e86c279a-c6ba-404a-bd96-7f55c7c0c059
  • stripe-verification=ca1a6e017a0569b54a9209ceab309cc9709d9d0a5e00718a8e05cdbc8e088853
  • google-site-verification=5LGz9AHK8hOhF4GFJpXRXCWIabO36gEttYCiL5q_yjY
  • google-site-verification=nyArb2LWyc0D0Ywggu5D1jdMjNHox16k0dbAFc-YZ2Y
  • facebook-domain-verification=xjxyn7abs02ihndvnmc9521mt97nbj

Email authentication strong

SPF
v=spf1 a mx include:_spf.google.com include:sendgrid.net include:spf.protection.outlook.com include:spf.sendinblue.com include:spf.customerly.io ~all
softfail (~all)
DMARC
v=DMARC1; p=quarantine; sp=quarantine; rua=mailto:dmarc@classtime.com,mailto:re+5ed296c14308@inbound.dmarcdigests.com; ruf=mailto:dmarc@classtime.com; adkim=s; aspf=r; fo=1; pct=100
policy: quarantine · sp=quarantine
DKIM
Show 5 DKIM selectors
  • google: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnSWB1w4MmvUzKJWZkpREm61eN5hhmivIIr9t+CHhv+LVJwfWe2bkVXNDbdXiOIrq/2wrp2v5MRbCZ2…
  • k1: k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDbNrX2cY/GUKIFx2G/1I00ftdAj713WP9AQ1xir85i89sA2guU0ta4UX1Xzm06XIU6iBP41VwmPwBGRNofhBVR+e6WHUo…
  • mail: k=rsa;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDeMVIzrCa3T14JsNY0IRv5/2V1/v2itlviLQBwXsa7shBD6TrBkswsFUToPyMRWC9tbR/5ey0nRBH0ZVxp+lsmTxid2Y2z…
  • s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAntxmbUU1kD/YAceGHC3uIF2FT+urur7OMjmz0IfAaRvp8EtmXmZ2QvOJ5dvtTDNeKWnIUGFfcfEYlY7EFI…
  • s2: k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCnuV/MoZAczOEEvKW5HumPZ4HuLj7fLX/sKFMXPGbQXbL6X0RcVoVUPU2BLAYq95sYxi93CM37hbI22Bc0imYFlk…
selectors probed

Certificate (current)

WR3
from 2026-04-21 to 2026-07-20
Expires in 62 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.classtime.com/

findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Linked from (1)