indexo.dev

simondev.io

.io crawl

First seen 2026-04-11 · Last seen 2026-05-19 · ok HTTP/1.1 200 646 ms crawled 2026-05-19

US · 3.164.68.27 · AS16509 Amazon.com, Inc.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title
SimonDev.io
Description
Learn real-time 3D from an industry veteran. From fundamentals to advanced GPU techniques, build projects that perform, scale, and stand out.
Language
en

Technology

CDN
Amazon CloudFront
Server
AmazonS3

Third-party hosts loaded (1)

  • cdn.paddle.com×1

DNS records live

NS
  • ns-1440.awsdns-52.org
  • ns-1698.awsdns-20.co.uk
  • ns-409.awsdns-51.com
  • ns-912.awsdns-50.net
MX
  • 10 mail.protonmail.ch
  • 20 mailsec.protonmail.ch
TXT
  • protonmail-verification=ad2cc70745ad6edc925d264470988056ccef4053

Email authentication strong

SPF
v=spf1 include:sendersrv.com include:_spf.protonmail.ch ~all
softfail (~all)
DMARC
v=DMARC1; p=quarantine
policy: quarantine
DKIM
no key found at common selectors

Certificate (current)

Amazon RSA 2048 M02
from 2025-08-28 to 2026-09-27
Expires in 129 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://simondev.io/

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

Linked from (2)