theleanstartup.com

.com crawl

First seen 2026-04-11 · Last seen 2026-05-18 · ok HTTP/1.1 200 1104 ms crawled 2026-05-18

US · 72.10.32.190 · AS398101 GoDaddy.com, LLC

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title: The Lean Startup | The Movement That Is Transforming How New Products Are Built And Launched
Description: Discover The Lean Startup methodology, a proven approach to building and scaling innovative businesses. Learn how to validate ideas, minimize risk, and achieve sustainable growth through data-driven strategies and continuous learning.

Technology

Server: nginx

Analytics

Google Tag Manager

Ads

Meta Pixel

Fonts

Google Fonts

Third-party hosts loaded (10)

farm5.static.flickr.com×9
farm6.static.flickr.com×2
ajax.googleapis.com×1
connect.facebook.net×1
embeds.beehiiv.com×1
farm3.static.flickr.com×1
fonts.googleapis.com×1
load.sumome.com×1
script.crazyegg.com×1
www.googletagmanager.com×1

Social

Registration

Registrar

GoDaddy.com, LLC

Created

2009-02-04

Expires

2027-02-04 261 days left

Updated

2026-02-05

Name servers

ns65.domaincontrol.com
ns66.domaincontrol.com

DNS records live

NS

ns65.domaincontrol.com
ns66.domaincontrol.com

MX

Show 7 MX records

10 aspmx.l.google.com
20 alt1.aspmx.l.google.com
20 alt2.aspmx.l.google.com
30 aspmx2.googlemail.com
30 aspmx3.googlemail.com
30 aspmx4.googlemail.com
30 aspmx5.googlemail.com

TXT

openai-domain-verification=dv-2wKaSursTn486z5EDTGiZZZO
f85ss02j1h7or90btmc1n3p6ph

Email authentication partial

SPF

v=spf1 include:_spf.google.com ~all

softfail (~all)

DMARC

v=DMARC1; p=none; rua=mailto:info@theleanstartup.com

policy: none (monitoring only)

DKIM

google: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoJUuVyjtzTUdbCKWyPrv2fB5b5NxFGuTqrDBHi9lG++Vq+ZUxh70BGxVhOAqbQAdC/+G4aiZA7o4bM…

selectors probed

Certificate (current)

Go Daddy Secure Certificate Authority - G2

from 2026-04-09 to 2026-07-08

Expires in 50 days

Full certificate history on crt.sh ↗

HTTP security headers

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

findings

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