circles.cz

HTML metadata

Technology

CDN

Cloudflare

jQuery

3.5.1

Analytics

• Google Tag Manager

Fonts

• Google Fonts

Third-party hosts loaded (6)

• cdn.prod.website-files.com×62
• ajax.googleapis.com×1
• d3e54v103j8qbb.cloudfront.net×1
• fonts.googleapis.com×1
• fonts.gstatic.com×1
• www.googletagmanager.com×1

Social

• facebook
• linkedin
• instagram

Contact

Email

• lukas.bartak@circles.cz
• 00kontaktlukas.bartak@circles.cz
• kontaktlukas.bartak@circles.cz

Phone

• 727 984 099

Registration

Registrar

REG-NEXUM

Created

2018-11-19

Expires

2026-11-18 170 days left

Updated

2025-02-17

Name servers

• dns.webmium.com
• ns2.nexum.cz
• ns3.nexum.cz
• ns.nexum.cz
• ns.webmium.com

DNS records live

NS

• dns.webmium.com
• ns.nexum.cz
• ns.webmium.com
• ns2.nexum.cz
• ns3.nexum.cz

MX

• 1 aspmx.l.google.com
• 10 alt3.aspmx.l.google.com
• 10 alt4.aspmx.l.google.com
• 5 alt1.aspmx.l.google.com
• 5 alt2.aspmx.l.google.com

Email authentication strong

SPF

v=spf1 include:_spf.google.com -all

strict (-all)

DMARC

v=DMARC1; p=quarantine; rua=mailto:info.dmarc@nexum.cz; ruf=mailto:info.dmarc@nexum.cz; fo=1:d:s; pct=50

policy: quarantine · pct=50

DKIM

• google: v=DKIM1;k=rsa;p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAmIWp8/CuTfbHnUj7ev60+1S8n3UPh2JD1Ytkv2mW9m2kDaW371FgTIxy42Je4YcaNO+9h2zoanTBYGRh…

selectors probed

Certificate (current)

Full certificate history on crt.sh ↗

HTTP security headers

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

present

• strict-transport-security

findings

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

Links to (3)

• linkedin.com×1
• instagram.com×1
• facebook.com×1

Linked from (4)

• sestricka.cz×1
• ambeatequity.cz×1
• ambeatinvest.cz×1
• ambeatgroup.cz×1