sumava-net.cz

.cz dns crawl

First seen 2026-05-28 · Last seen 2026-05-30 · ok HTTP/1.1 200 328 ms crawled 2026-05-30

CZ · 88.146.192.7 · AS16019 Vodafone Czech Republic a.s.

Reputation 87/100 weak security headers no dmarc policy

Classifying

HTML metadata

Title: Šumava Net s.r.o. ,INTERNET HORAŽĎOVICE [pevná & optika]

Technology

Server: Apache
jQuery: 2.1.4 known XSS (<3.5)
Stack: PHP

Analytics

Google Tag Manager

Third-party hosts loaded (2)

code.jquery.com×1
www.googletagmanager.com×1

DNS records live

NS

nrs.sumava-net.cz
ns.sumava-net.cz

MX

0 sumavanet-cz01e.mail.protection.outlook.com

TXT

MS=7F5D1A7B53F787BC74202E34E16D2CD3B34CFE75

Verified for

Google

Email authentication weak

SPF: v=spf1 include:spf.protection.outlook.com ip4:88.146.192.250 ip4:88.146.192.2 -all
strict (-all)
DMARC: not published
DKIM: no key found at common selectors

Certificate (current)

R12

from 2026-05-11 to 2026-08-09

Expires in 70 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://sumava-net.cz/

findings

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

Links to (13)