indexo.dev

tensortextbook.com

.com crawl

First seen 2026-04-20 · Last seen 2026-05-11 · ok HTTP/1.1 200 1267 ms crawled 2026-05-14

US · 35.185.44.232 · AS396982 Google LLC

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
Tensor Decompositions for Data Science
Description
The website for the book 'Tensor Decompositions for Data Science' by Grey Ballard and Tamara G. Kolda, published by Cambridge University Press.
Language
en

Open Graph

url
https://www.tensordecompositions.com/
title
Tensor Decompositions for Data Science
description
The website for the book 'Tensor Decompositions for Data Science' by Grey Ballard and Tamara G. Kolda.

Technology

Third-party hosts loaded (1)

  • cdnjs.cloudflare.com×1

Social

Contact

Phone

Registration

Registrar
NameCheap, Inc.
Created
2025-06-18
Expires
2026-06-18 29 days left
Updated
2025-06-18
Name servers
  • dns1.registrar-servers.com
  • dns2.registrar-servers.com

DNS records live

NS
  • dns1.registrar-servers.com
  • dns2.registrar-servers.com
MX
  • 10 eforward1.registrar-servers.com
  • 10 eforward2.registrar-servers.com
  • 10 eforward3.registrar-servers.com
  • 15 eforward4.registrar-servers.com
  • 20 eforward5.registrar-servers.com

Email authentication weak

SPF
v=spf1 include:spf.efwd.registrar-servers.com ~all
softfail (~all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

R13
from 2026-04-14 to 2026-07-13
Expires in 55 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 35/100 Checked live page: https://tensortextbook.com/

present
  • permissions-policy
findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
Header values
permissions-policy
interest-cohort=()

Links to (5)

Linked from (1)