indexo.dev

mistakesbook.com

.com crawl

First seen 2026-04-20 · Last seen 2026-05-16 · ok HTTP/1.1 200 3638 ms crawled 2026-05-13

US · 141.193.213.11 · AS209242 Cloudflare London, LLC

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title
The Mistakes That Make Us | Mark Graban’s Book on Learning Culture
Description
Discover how learning from mistakes builds better teams, stronger leaders, and a culture of innovation, improvement, and psychological safety.
Language
en-US
Generator
Site Kit by Google 1.175.0
Canonical
https://www.mistakesbook.com/
Feeds

Open Graph

url
https://www.mistakesbook.com/
title
The Mistakes That Make Us | Mark Graban’s Book on Learning Culture
locale
en_US
site name
The Mistakes That Make Us - by Mark Graban
description
Discover how learning from mistakes builds better teams, stronger leaders, and a culture of innovation, improvement, and psychological safety.

Technology

CDN
Cloudflare
CMS
WordPress
Analytics
  • Google Tag Manager
Fonts
  • Google Fonts

Third-party hosts loaded (6)

  • fonts.googleapis.com×4
  • www.google.com×4
  • stats.wp.com×3
  • js.hs-scripts.com×2
  • www.googletagmanager.com×2
  • gmpg.org×1

Social

Registration

Registrar
GoDaddy.com, LLC
Created
2022-08-16
Expires
2026-08-16 88 days left
Updated
2024-08-17
Name servers
  • ns41.domaincontrol.com
  • ns42.domaincontrol.com

DNS records live

NS
  • ns41.domaincontrol.com
  • ns42.domaincontrol.com
MX
  • 0 mistakesbook-com.mail.protection.outlook.com
TXT
  • NETORGFT13845604.onmicrosoft.com

Email authentication partial

SPF
v=spf1 include:secureserver.net -all
strict (-all)
DMARC
v=DMARC1; p=none;
policy: none (monitoring only)
DKIM
no key found at common selectors

Certificate (current)

E8
from 2026-05-02 to 2026-07-31
Expires in 73 days

Full certificate history on crt.sh ↗

HTTP security headers

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

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

Links to (18)

Linked from (11)