indexo.dev

3menergy.cz

.cz crawl

First seen 2026-06-01 · Last seen 2026-06-01 · ok HTTP/1.1 200 402 ms crawled 2026-06-02

US · 172.67.205.191 · AS13335 Cloudflare, Inc.

Reputation 92/100 no dmarc policy

Classifying

HTML metadata

Title
3M ENERGY Brno | Fotovoltaika, renovační pas, tepelná čerpadla a dotace NZÚ
Description
Rodinná firma z Brna pro fotovoltaiku, tepelná čerpadla, baterie, renovační pas a dotace NZÚ. Nejdřív posoudíme dům, potom navrhneme správný postup.
Language
cs
Canonical
https://3menergy.cz/

Open Graph

url
https://3menergy.cz/
title
3M ENERGY Brno | Fotovoltaika, renovační pas, tepelná čerpadla a dotace NZÚ
locale
cs_CZ
site name
3M Energy
description
Rodinná firma z Brna pro fotovoltaiku, tepelná čerpadla, baterie, renovační pas a dotace NZÚ. Nejdřív posoudíme dům, potom navrhneme správný postup.

Technology

CDN
Cloudflare
Fonts
  • Google Fonts

Third-party hosts loaded (2)

  • fonts.googleapis.com×2
  • fonts.gstatic.com×1

Social

Contact

Email
Phone
Address
Kaštanová 489/34, 620 00, Brno-Brněnské Ivanovice, CZ

DNS records live

NS
  • jacob.ns.cloudflare.com
  • tiffany.ns.cloudflare.com
MX
  • 1 relay.zoner.com
  • 10 10mx.zoner.com
  • 15 15mx.zoner.com

Email authentication weak

SPF
v=spf1 include:spf-zoner-zmail.zoner.com -all
strict (-all)
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

E8
from 2026-04-15 to 2026-07-14
Expires in 42 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 95/100 Checked live page: https://3menergy.cz/

present
  • strict-transport-security
  • content-security-policy
  • x-frame-options
  • x-content-type-options
  • referrer-policy
  • permissions-policy
findings
  • CSP allows unsafe inline scripts/styles
Header values
referrer-policy
strict-origin-when-cross-origin
x-frame-options
DENY
permissions-policy
camera=(), microphone=(), geolocation=()
x-content-type-options
nosniff
content-security-policy
default-src 'self'; script-src 'self' 'unsafe-inline' https://challenges.cloudflare.com; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; font-src 'self' https://fonts.gstatic.com; img-src 'self' data: https:; connect-src 'self' https://crm.3menergy.cz https://challenges.cloudflare.com; frame-src https://challenges.cloudflare.com https://widgets.refsite.info https://refsite.info https://www.refsite.info; frame-ancestors 'none'; base-uri 'self'; form-action 'self'; upgrade-insecure-requests
strict-transport-security
max-age=31536000; includeSubDomains; preload

Links to (4)

Linked from (1)