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acscc.nl

.nl crawl

First seen 2026-05-13 · Last seen 2026-05-13 · ok HTTP/1.1 200 1669 ms crawled 2026-05-19

US · 185.199.111.153 · AS54113 Fastly, Inc.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title
Amsterdam Complexity School on Climate Change
Language
en
Generator
Jekyll v3.10.0
Canonical
https://acscc.github.io/
Translations
  • en
Feeds

Open Graph

url
https://acscc.github.io/
title
Amsterdam Complexity School on Climate Change
locale
en
site name
Amsterdam Complexity School on Climate Change

Technology

CDN
Fastly
Server
GitHub.com
Analytics
  • Google Analytics
Fonts
  • Google Fonts

Third-party hosts loaded (4)

  • acscc.github.io×3
  • fonts.googleapis.com×3
  • fonts.gstatic.com×1
  • www.google-analytics.com×1

Social

Registration

Registrar
NAMECHEAP, INC.
Created
2023-11-03
Name servers
  • dns1.registrar-servers.com
  • dns2.registrar-servers.com

DNS records live

NS
  • dns1.registrar-servers.com
  • dns2.registrar-servers.com
MX
  • 10 eforward1.registrar-servers.com
  • 10 eforward2.registrar-servers.com
  • 10 eforward3.registrar-servers.com
  • 15 eforward4.registrar-servers.com
  • 20 eforward5.registrar-servers.com

Email authentication weak

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

Certificate (current)

R13
from 2026-04-24 to 2026-07-23
Expires in 64 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://acscc.nl/

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

Links to (3)

Linked from (1)