nix.cz

HTML metadata

Technology

Server

uvicorn

CMS

Gatsby

Analytics

• Google Tag Manager

Third-party hosts loaded (1)

• www.googletagmanager.com×1

Social

• facebook
• twitter
• youtube
• linkedin

Contact

Email

• info@nix.cz
• billing@nix.cz
• press@nix.cz
• nmc@nix.cz
• noc@nix.cz
• peering@nix.cz
• serverypeering@nix.cz

Phone

• +420 246 083 460

Registration

Registrar

REG-GRANSY

Created

1996-12-28

Expires

2026-10-20 141 days left

Updated

2019-10-27

Name servers

• domain.nix.cz
• domain.nixcz.org

DNS records live

NS

• domain.nix.cz
• domain.nixcz.org

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 a mx include:_spf.nix.cz include:_spf.google.com include:_spf.network.cz ~all

softfail (~all)

DMARC

v=DMARC1; p=reject; pct=100; rua=mailto:tls-reports@nix.cz; ruf=mailto:tls-reports@nix.cz

policy: reject (enforced)

DKIM

• google: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAhnwcDPib9tkwOJTA1grw6NMASbxvj8qYTSbAlqrmtQ28fd9xQQ0oXDflKE6viuPKOGPNv6R86IfK3/…

selectors probed

Certificate (current)

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 55/100 Checked live page: https://nix.cz/

present

• x-frame-options
• x-content-type-options
• referrer-policy
• cross-origin-opener-policy

findings

• missing HSTS
• missing Content Security Policy
• missing Permissions Policy

Links to (8)

• ccinternet.cz×1
• denipv6.cz×1
• euro-ix.net×1
• facebook.com×1
• hawetelekom.com×1
• linkedin.com×1
• twitter.com×1
• youtube.com×1

Linked from (5)

• giganet.cz×1
• denipv6.cz×1
• peeringdays.eu×1
• telcoproservices.cz×1
• globalpeeringforum.org×1