indexo.dev

ctcmath.com

.com crawl

First seen 2026-04-11 · Last seen 2026-05-19 · ok HTTP/1.1 200 1111 ms crawled 2026-05-19

US · 18.165.140.106 · AS16509 Amazon.com, Inc.

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title
CTCMath - Welcome
Description
CTCMath is an online math curriculum that offers comprehensive tutorials for K-12 students, providing interactive lessons, adaptive questions, diagnostic tests, and tailored solutions to help students master mathematics.
Language
en

Technology

CDN
Amazon CloudFront
Server
Apache
Analytics
  • Google Tag Manager

Third-party hosts loaded (6)

  • www.googletagmanager.com×4
  • cdnjs.cloudflare.com×2
  • vjs.zencdn.net×2
  • arttrk.com×1
  • cdn.cookie-script.com×1
  • maxcdn.bootstrapcdn.com×1

Social

Contact

Phone

Registration

Registrar
GoDaddy.com, LLC
Created
2012-12-12
Expires
2028-12-12 936 days left
Updated
2025-12-12
Name servers
  • ns-1343.awsdns-39.org
  • ns-1603.awsdns-08.co.uk
  • ns-449.awsdns-56.com
  • ns-874.awsdns-45.net

DNS records live

NS
  • ns-1343.awsdns-39.org
  • ns-1603.awsdns-08.co.uk
  • ns-449.awsdns-56.com
  • ns-874.awsdns-45.net
MX
  • 1 aspmx.l.google.com
  • 10 alt3.aspmx.l.google.com
  • 10 alt4.aspmx.l.google.com
  • 5 alt1.aspmx.l.google.com
  • 5 alt2.aspmx.l.google.com
Verified for
  • Google
  • Stripe

Email authentication partial

SPF
v=spf1 include:_spf.google.com ~all
softfail (~all)
DMARC
v=DMARC1; p=none
policy: none (monitoring only)
DKIM
  • google: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAjPkAL+rDlCMqZBkSjXwng0acx+oPJinJZzSERrmqOKyAqiEVzX/a71Vaj1DGtj5JDU5frP+p6yFEjL…
selectors probed

Certificate (current)

Amazon RSA 2048 M03
from 2025-09-04 to 2026-10-04
Expires in 136 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 40/100 Checked live page: https://ctcmath.com/

present
  • x-content-type-options
findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-content-type-options
nosniff

Links to (2)

Linked from (1)