indexo.dev

trefcon.cz

.cz dns

First seen 2026-05-31 · Last seen 2026-06-01 · ok HTTP/1.1 200 226 ms crawled 2026-06-01

CZ · 89.221.222.57 · AS197019 WEDOS Internet, a.s.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
TREFCON s.r.o.
Description
Poradenství a realizace v oblasti výstavy počítačových síti a správy počítačových sítí. Návrh, realizace a konzultace v oblasti AOS. Hostování trvale bežících obchodních platforem (MT4,MT5 atd.) na serverech pro AOS.

Technology

Server
Apache

Contact

Email

Registration

Registrar
REG-WEDOS
Created
2017-04-24
Expires
2027-04-23 324 days left
Updated
2018-01-06
Name servers
  • ns.wedos.com
  • ns.wedos.cz
  • ns.wedos.eu
  • ns.wedos.net

DNS records live

NS
  • ns.wedos.com
  • ns.wedos.cz
  • ns.wedos.eu
  • ns.wedos.net
MX
  • 10 server.trefcon.cz
Verified for
  • Google

Email authentication weak

SPF
v=spf1 ip4:5.196.7.10 ip6:2001:41d0:401:3100::45c4 ip4:185.15.252.0/27 ip6:2a03:b4c0:0:bfff::2:0/112 ip4:89.221.222.57 ip6:2a02:2b88:2:b39::1 a mx -all
strict (-all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

R12
from 2026-04-08 to 2026-07-07
Expires in 35 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 55/100 Checked live page: https://trefcon.cz/

present
  • strict-transport-security
  • x-frame-options
findings
  • short HSTS max-age
  • missing Content Security Policy
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
DENY
strict-transport-security
max-age=0; includeSubDomains;