backer-elektro.cz

.cz crawl

First seen 2026-06-01 · Last seen 2026-06-01 · ok HTTP/1.1 200 2119 ms crawled 2026-06-01

CZ · 81.91.86.12 · AS39790 Web4U s.r.o.

Reputation 100/100

Classifying

HTML metadata

Title: Backer-Elektro a.s. |
Generator: Drupal 7 (http://drupal.org)
Canonical: https://www.backer-elektro.cz/

Technology

Server: openresty
CMS: Drupal
PHP: 5.3.10 end of life
jQuery: 1.8.2 known XSS (<3.5)

Analytics

Google Tag Manager

Third-party hosts loaded (3)

www.googletagmanager.com×2
code.jquery.com×1
ifirmy.cz×1

Contact

Email

DNS records live

NS

ns.web4u.cz
ns2.web4u.cz

MX

10 mxa-00373502.gslb.pphosted.com
10 mxb-00373502.gslb.pphosted.com

Verified for

Microsoft 365

Email authentication strong

SPF

v=spf1 ip4:81.91.87.10 ip4:81.91.87.11 ip4:185.25.184.250 ip4:217.16.180.245 include:servers.mcsv.net include:spfloc.nibe.se include:spf-00373502.pphosted.com include:spf.protection.outlook.com include:_spf.web4u.cz ~all

softfail (~all)

DMARC

v=DMARC1; p=reject; fo=1; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com

policy: reject (enforced)

DKIM

selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsgublauVb/YCpRcXBSZCU85pbhUkYJPibY6lTqdwPXPmnHVDxQeEY1f29Y75fiSzhBP8K3gt7HzSkR…

selectors probed

Certificate (current)

R12

from 2026-05-23 to 2026-08-21

Expires in 78 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://www.backer-elektro.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;

Links to (3)

Linked from (1)

hchlinsko.cz×1