aero-cluster.cz

.cz crawl

First seen 2026-05-28 · Last seen 2026-05-28 · ok HTTP/1.1 200 218 ms crawled 2026-05-31

CZ · 31.15.13.58 · AS25234 ACTIVE 24, s.r.o.

Reputation 94/100 dmarc monitor-only

Classifying

Technology

Server: nginx

Registration

Registrar

REG-GANDI

Created

2009-12-16

Expires

2026-12-15 197 days left

Updated

2025-11-24

Name servers

ns.onebit.cz
ns.onebit.org

DNS records live

NS

ns.onebit.cz
ns.onebit.eu
ns.onebit.org

MX

5 aerocluster-cz01b.mail.protection.outlook.com

TXT

18.01.2024

Verified for

Microsoft 365

Email authentication partial

SPF

v=spf1 mx a include:servers.mcsv.net include:spf.protection.outlook.com include:27164667.spf10.hubspotemail.net ~all

softfail (~all)

DMARC

v=DMARC1; p=none;

policy: none (monitoring only)

DKIM

selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAteNm9RdWfCFiUXcnhK/mgP31Isqs50zjh5rlIVttPP0YXrQZ1Q/XGW6G9NN3GdXXIRNGcBXFMABWMy…
selector2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAmLu04+AzfG8W5L/O6fxWSJBUF0XFVJOSvMePTTl+qU/Zsi2e/BPzE3IZ9iT5X0D21Y4wk5zI4y0JOY…
k2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv2aC2KjGKLOwTweBY5A9RpjsxaBXR9r7OAU6U8/zn92ivImI75naUujWbItRI/QmL1jy5PWGqLwoUA…

selectors probed

Certificate (current)

from 2026-05-20 to 2026-08-18

Expires in 78 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://aero-cluster.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

Linked from (1)

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