indexo.dev

matthieusieben.com

.com crawl

First seen 2026-04-13 · Last seen 2026-05-04 · ok HTTP/1.1 200 2762 ms crawled 2026-05-07

US · 213.188.222.47 · AS40509 Fly.io, Inc.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
Matthieu Sieben 🦋
Description
**Protocol Engineer at Bluesky** Building the open social web on AT Protocol. Into web standards, OAuth, TypeScript, and quality code. Dad, sailor (crossed the Atlantic once), gamer, Dire Straits fan, and beer enthusiast. Based in Brussels 🇧🇪
Language
en

Open Graph

title
Matthieu Sieben 🦋
description
**Protocol Engineer at Bluesky** Building the open social web on AT Protocol. Into web standards, OAuth, TypeScript, and quality code. Dad, sailor (crossed the Atlantic once), gamer, Dire Straits fan, and beer enthusiast. Based in Brussels 🇧🇪

Technology

CDN
Cloudflare

Third-party hosts loaded (4)

  • cdn.bsky.app×41
  • cdn.plyr.io×1
  • umami-wispy-dream-8048.fly.dev×1
  • video.bsky.app×1

Social

Registration

Registrar
Gandi SAS
Created
2010-09-26
Expires
2032-09-26 2320 days left
Updated
2025-08-13
Name servers
  • cody.ns.cloudflare.com
  • rose.ns.cloudflare.com

DNS records live

NS
  • cody.ns.cloudflare.com
  • rose.ns.cloudflare.com
MX
  • 10 mx1.improvmx.com
  • 20 mx2.improvmx.com

Email authentication partial

SPF
v=spf1 include:spf.improvmx.com ~all
softfail (~all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

E7
from 2026-05-01 to 2026-07-30
Expires in 71 days

Full certificate history on crt.sh â†—

HTTP security headers

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

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

Links to (10)

Linked from (1)