operaplus.cz

HTML metadata

Technology

CDN

Cloudflare

CMS

WordPress 7.0

jQuery

3.7.1

Stack

PHP

Analytics

• Google Tag Manager

Fonts

• Google Fonts

Third-party hosts loaded (5)

• export.themeruby.com×1
• fonts.googleapis.com×1
• gmpg.org×1
• upload.wikimedia.org×1
• www.googletagmanager.com×1

Social

• facebook
• twitter
• youtube
• instagram

Contact

Phone

• 2026-04-21 15

Registration

Registrar

REG-WEDOS

Created

2009-06-09

Expires

2028-06-08 738 days left

Updated

2018-08-02

Name servers

• stan.ns.cloudflare.com
• sue.ns.cloudflare.com

DNS records live

NS

• stan.ns.cloudflare.com
• sue.ns.cloudflare.com

MX

• 10 63e966bed0df3d99.mx1.emailprofi.seznam.cz
• 20 63e966bed0df3d99.mx2.emailprofi.seznam.cz

Verified for

• Google

Email authentication weak

SPF

not published

DMARC

not published

DKIM

no key found at common selectors

Certificate (current)

Full certificate history on crt.sh ↗

HTTP security headers

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

findings

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

Links to (8)

• youtube.com×1
• x.com×1
• rozhlas.cz×1
• ndbrno.cz×1
• instagram.com×1
• filharmonie-brno.cz×1
• festivalbaroko.cz×1
• facebook.com×1

Linked from (5)

• zamekliten.cz×1
• korespondance.cz×1
• smetanovalitomysl.cz×1
• djkt.eu×1
• chr-cmc.org×1