indexo.dev

davidepstein.com

.com crawl

First seen 2026-04-29 · Last seen 2026-04-29 · ok HTTP/1.1 200 1379 ms crawled 2026-05-07

US · 162.241.216.122 · AS31898 Oracle Corporation

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
David Epstein | The Books: Range & The Sports Gene
Description
Range: Why Generalists Triumph in a Specialized world and The Sports Gene is composed by David Epstein. Sports Gene has been translated in 21 languages.
Generator
WordPress 6.9.4
Canonical
https://davidepstein.com/
Feeds

Open Graph

url
https://davidepstein.com/
title
David Epstein | The Books: Range & The Sports Gene
locale
en_US
site name
David Epstein
description
Range: Why Generalists Triumph in a Specialized world and The Sports Gene is composed by David Epstein. Sports Gene has been translated in 21 languages.

Technology

Server
nginx
CMS
WordPress
Analytics
  • Google Tag Manager

Third-party hosts loaded (3)

  • davidepstein.substack.com×2
  • embed.ted.com×1
  • www.googletagmanager.com×1

Social

Registration

Registrar
Bluehost Inc.
Created
2004-02-25
Expires
2032-02-25 2106 days left
Updated
2023-05-16
Name servers
  • ns1.bluehost.com
  • ns2.bluehost.com

DNS records live

NS
  • ns1.bluehost.com
  • ns2.bluehost.com
MX
  • 0 mail.davidepstein.com

Email authentication weak

SPF
v=spf1 a mx include:websitewelcome.com ~all
softfail (~all)
DMARC
not published
DKIM
  • default: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAszV82b/CunAsWsXtRyXtyP3RFpYGuihQOzbc9gxHvDMqAyS1qWMea3sUpUXncPTH0fhIDpA5u+LEv0…
selectors probed

Certificate (current)

R12
from 2026-03-28 to 2026-06-26
Expires in 36 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 35/100 Checked live page: https://davidepstein.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
private-state-token-redemption=(self "https://www.google.com" "https://www.gstatic.com" "https://recaptcha.net" "https://challenges.cloudflare.com" "https://hcaptcha.com"), private-state-token-issuance=(self "https://www.google.com" "https://www.gstatic.com" "https://recaptcha.net" "https://challenges.cloudflare.com" "https://hcaptcha.com")

Links to (12)

Linked from (1)