net4gas.cz

.cz crawl

First seen 2026-05-28 · Last seen 2026-05-31 · ok HTTP/1.1 200 1955 ms crawled 2026-05-31

CZ · 81.2.216.230 · AS24806 INTERNET CZ, a.s.

Reputation 100/100

Classifying

HTML metadata

Title: Home - NET4GAS
Description: Společnost NET4GAS je výlučným provozovatelem přepravní soustavy pro zemní plyn v ČR.

Technology

Server: nginx
Stack: Java

Social

DNS records live

NS

ns.forpsi.cz
ns.forpsi.it
ns.forpsi.net

MX

10 net4gas-cz.mail.protection.outlook.com

TXT

/KuB653J1+u9iG36iWq+ia38SNRzrRw9ttr/2tVnLElyZkHvtQc7JpJNGHGZUnNazzenVZVJeN8p6sV0qcKS4w==
aTYMZ3O4gJ38RVdT6hXUf45t5rgBPVdeYDj3NkE7+IfqCktZTKDZpb5zH7nwkELfVwORAlTg78lhllW2KqBs5Q==

Verified for

Apple
Microsoft 365

Email authentication strong

SPF

v=spf1 ip4:212.67.81.26 ip4:212.67.81.27 include:spf.protection.outlook.com -all

strict (-all)

DMARC

v=DMARC1; p=quarantine; pct=100; rua=mailto:dmarc@net4gas.cz; sp=quarantine; aspf=r;

policy: quarantine · sp=quarantine

DKIM

selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnQTDnO2twYI0jgWiVDnD4aoZHrsOLHTEzKElQf2TExw/geCZS0xFMXhn3QwHiGfKdxKBRmFIalpo4y…
selector2: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC/dLQSQ9oJLHZ0sM4rhA0srmo88mjyLZNFGht5i7xAA8JJCtuhxqJxr2WiXf4c6YmFAxq064rQKl6/Uluj5x…

selectors probed

Certificate (current)

R13

from 2026-04-01 to 2026-06-30

Expires in 30 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 85/100 Checked live page: https://www.net4gas.cz/cz/home/

present

strict-transport-security
content-security-policy
x-frame-options
x-content-type-options
referrer-policy

findings

CSP allows unsafe inline scripts/styles
CSP uses wildcard sources
missing Permissions Policy

Header values

referrer-policy: same-origin
x-frame-options: SAMEORIGIN
x-content-type-options: nosniff
content-security-policy: default-src 'none'; script-src https: blob: data: 'unsafe-inline' 'unsafe-eval' *.disqus.com c.disquscdn.com; worker-src https: blob:; style-src https: data: 'unsafe-inline' 'unsafe-eval' c.disquscdn.com; img-src https: data: 'unsafe-inline'; font-src https:; object-src blob: 'self'; base-uri 'none'; frame-ancestors 'self'; connect-src blob: 'self' *.openstreetmap.org *.disqus.com maps.googleapis.com *.pixabay.com pixabay.com *.capybara.lmc.cz *.leady.com www.google-analytics.com region1.analytics.google.com region1.google-analytics.com stats.g.doubleclick.net plausible.io; frame-src 'self' www.net4gas.cz *.net4gas.cz www.youtube.com
strict-transport-security: max-age=31536000; includeSubDomains