indexo.dev

dbader.org

.org crawl

First seen 2026-04-11 · Last seen 2026-05-18 · ok HTTP/1.1 200 690 ms crawled 2026-05-18

US · 172.66.40.69 · AS13335 Cloudflare, Inc.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title
Python Training by Dan Bader – dbader.org
Description
Dan Bader helps Python developers become more awesome. His tutorials, videos, and trainings have reached over half a million developers around the world.
Language
en
Canonical
https://dbader.org/
Feeds

Open Graph

url
https://dbader.org/
title
Python Training by Dan Bader – dbader.org
site name
dbader.org
description
Dan Bader helps Python developers become more awesome. His tutorials, videos, and trainings have reached over half a million developers around the world.

Technology

CDN
Cloudflare
CMS
Gatsby
Fonts
  • Google Fonts

Third-party hosts loaded (2)

  • fonts.googleapis.com×1
  • srv.realpython.net×1

Social

Registration

Registrar
Tucows Domains Inc.
Created
2012-10-25
Expires
2026-10-25 158 days left
Updated
2025-10-29
Name servers
  • curt.ns.cloudflare.com
  • joan.ns.cloudflare.com

DNS records live

NS
  • curt.ns.cloudflare.com
  • joan.ns.cloudflare.com
MX
  • 1 aspmx.l.google.com
  • 10 aspmx2.googlemail.com
  • 10 aspmx3.googlemail.com
  • 5 alt1.aspmx.l.google.com
  • 5 alt2.aspmx.l.google.com
TXT
  • heroku-domain-verification=la1zjexaqu1ppcer6o0cwbbuneghvbxflvurnkkt9o
Verified for
  • Google

Email authentication strong

SPF
v=spf1 include:sendgrid.net include:_spf.google.com -all
strict (-all)
DMARC
v=DMARC1; p=reject; rua=mailto:re+422ed8907514@inbound.dmarcdigests.com; pct=100
policy: reject (enforced)
DKIM
  • google: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCRu5HzRT3KJFD3zRAIk56wvaF4VLMPJM+fifOIwYcqKDpACBYVIlwuaBQoUCXt7ZuD4Sjj6TIWpenAJ5a1rZ…
  • s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyHdK0G1NunOO4m5osxxxsBa7swgerECQ/I/TDgOlxYvO7q3LM3dOr/W8IJcZpt/b0iDB98RwVPS7mXD9km…
  • s2: k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCgrs9X78U7p/kXXl7/n2SoKkHqNHF1WAApVo5KDcQa0MI0txSpKpOEPXbur/3H+D9Uks8nKx4onSMxSO5GdZOXZA…
selectors probed

Certificate (current)

E8
from 2026-04-11 to 2026-07-10
Expires in 51 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://dbader.org/

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

Links to (2)

Linked from (1)