petrsoftware.cz

.cz crawl

First seen 2026-06-01 · Last seen 2026-06-03 · ok HTTP/1.1 200 349 ms crawled 2026-06-02

SK · 37.9.175.163 · AS51013 WebSupport s.r.o.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title: Petr Software
Description: Petr Software s.r.o. - vývoj vnitřních informačních systémů
Language: cs

Technology

Server: openresty
jQuery: 3.4.1 known XSS (<3.5)

Contact

Email

Phone

Registration

Registrar

REG-ACTIVE24

Created

2007-01-08

Expires

2027-01-07 217 days left

Updated

2024-06-28

Name servers

ns1.websupport.cz
ns2.websupport.cz
ns3.websupport.eu

DNS records live

NS

ns1.websupport.cz
ns2.websupport.cz
ns3.websupport.eu

MX

10 mx10.active24.cz
100 mx20.active24.cz

TXT

MS=67E6516071F06F2A26A50F0521C50E0FAA13F220
spf2.0/pra a mx include:_sid.websupport.cz ?all

Email authentication weak

SPF

v=spf1 a mx include:_spf.websupport.cz ?all

neutral (?all)

DMARC

not published

DKIM

mail: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3pLPFrgwbBNUNgtp+JNROKgcZUt57GmBr9i09IvJaeTGfIs937ZfKAf8IEKcWADCmXkGHBwOMzwx1T…

selectors probed

Certificate (current)

R13

from 2026-05-04 to 2026-08-02

Expires in 59 days

Full certificate history on crt.sh ↗

HTTP security headers

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

present

content-security-policy

findings

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

Header values

content-security-policy: upgrade-insecure-requests