astro.cz

.cz crawl

First seen 2026-05-19 · Last seen 2026-05-31 · ok HTTP/1.1 200 13708 ms crawled 2026-05-24

CZ · 147.231.104.19 · AS2852 CESNET z.s.p.o.

Reputation 64/100 wrong cert weak security headers dmarc monitor-only

sector education type homepage

HTML metadata

Title: Astronomický informační server astro.cz
Language: cs

Technology

Server: Apache
PHP: 8.4.5
jQuery: 1.8.1 known XSS (<3.5)
Stack: PHP

Analytics

Google Tag Manager

Fonts

Google Fonts

Third-party hosts loaded (5)

ajax.googleapis.com×2
cdnjs.cloudflare.com×1
fonts.googleapis.com×1
www.cookieconsent.com×1
www.googletagmanager.com×1

Social

Registration

Registrar

REG-ACTIVE24

Created

1997-04-17

Expires

2026-10-10 131 days left

Updated

2024-10-20

Name servers

ns.astro.cz
visla.utia.cas.cz

DNS records live

NS

ns.astro.cz
visla.utia.cas.cz

MX

10 callisto.astro.cz
20 mx1.nuabi.com

Email authentication partial

SPF

v=spf1 mx ip4:147.231.104.16/28 ip4:82.208.40.25 ip4:217.11.236.25 ip4:217.11.236.27 ip4:217.11.236.28 ip4:82.208.40.17 ip4:82.208.40.18 ip4:82.208.40.19 include:_spf.google.com ?all

neutral (?all)

DMARC

v=DMARC1; p=none

policy: none (monitoring only)

DKIM

default: v=DKIM1; k=rsa; s=email; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDlVNH8v5z36XJzlsHaXbQq4d8a8FmTV5TOMjCxP/srsFhE1ziqruMRI6o1QaUt11Fjx79x7tUNW…

selectors probed

Certificate (current) wrong cert

R12

from 2026-04-14 to 2026-07-13

Expires in 42 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.astro.cz/

findings

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