indexo.dev

artcollegium.cz

.cz crawl

First seen 2026-06-01 · Last seen 2026-06-01 · ok HTTP/1.1 200 288 ms crawled 2026-06-01

CZ · 79.170.251.40 · AS20723 AVONET, s.r.o.

Reputation 45/100 listed in spam blocklist wrong cert weak security headers

Classifying

Technology

Server
Apache

Contact

Email

DNS records live

NS
  • ns.forpsi.cz
  • ns.forpsi.it
  • ns.forpsi.net
MX
  • 11 mail1.vianet.cz
TXT
  • spf2.0/mfrom,pra ip4:217.115.250.32/27 -all

Email authentication strong

SPF
v=spf1 ip4:217.115.250.32/27 -all
strict (-all)
DMARC
v=DMARC1; p=reject; pct=100; rua=mailto:dmarc-rua@viamedia.info; ruf=mailto:dmarc-ruf@viamedia.info
policy: reject (enforced)
DKIM
  • mail: v=DKIM1;p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA/3dmlahxd8RSM+3i51ULRcflbF8U8tEWKGUVQPwOwxXR6ccA/JX8Y136zBE7OBYObTgssjECh0hkebXGwKRSvh…
selectors probed

Certificate (current) wrong cert

R13
from 2026-05-27 to 2026-08-25
Expires in 84 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 35/100 Checked over plain HTTP: http://artcollegium.cz/

findings
  • checked over plain HTTP
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Linked from (1)