indexo.dev

duoweb.cz

.cz crawl dns

First seen 2026-05-31 · Last seen 2026-06-01 · ok HTTP/1.1 200 178 ms crawled 2026-06-01

CZ · 82.208.41.185 · AS15685 CASABLANCA INT a.s.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
DUOWEB.cz - webové aplikace na zakázku
Description
Webové a mobilní aplikace na zakázku - informační a podnikové webové aplikace
Language
en

Technology

Server
nginx

Contact

Email
Phone

DNS records live

NS
  • ns1.websupport.cz
  • ns2.websupport.cz
  • ns3.websupport.eu
MX
  • 10 server2.duoweb.cz

Email authentication weak

SPF
v=spf1 a a:imap.duoweb.cz include:_spf.google.com -all
strict (-all)
DMARC
not published
DKIM
  • mail: v=DKIM1; k=rsa; s=email; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDK6XwIs5JsbMJBxTJ6U2akNRVHguCU4Zu0fTp44OKZI6Ts4NpdyMaUItXgx9WpCqcWQZicgIBBG…
selectors probed

Certificate (current)

E7
from 2026-05-01 to 2026-07-30
Expires in 57 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://duoweb.cz/

present
  • strict-transport-security
findings
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
strict-transport-security
max-age=31536000; includeSubDomains

Links to (8)

Linked from (10)