czechsmartcitycluster.com

Technology

Server

openresty

PHP

8.4.21

Contact

Email

• info@czechsmartcitycluster.com

Registration

Registrar

Gransy, s.r.o.

Created

2017-12-18

Expires

2026-12-18 187 days left

Updated

2025-06-30

Name servers

• ns.web4u.cz
• ns2.web4u.cz

DNS records live

NS

• ns.web4u.cz
• ns2.web4u.cz

MX

• 10 mx1.mailchannels.net
• 10 mx2.mailchannels.net

Email authentication partial

SPF

v=spf1 include:_spf.web4u.cz ~all

softfail (~all)

DMARC

v=DMARC1; p=none; rua=mailto:postmaster@czechsmartcitycluster.com

policy: none (monitoring only)

DKIM

no key found at common selectors

Certificate (current)

Full certificate history on crt.sh ↗

HTTP security headers

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

findings

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

Linked from (3)

• zvolni.cz×1
• apgeo.cz×1
• smartukraine.eu×1