indexo.dev

zener.es

.es crawl

First seen 2026-04-13 · Last seen 2026-05-07 · ok HTTP/1.1 200 2698 ms crawled 2026-05-07

ES · 188.87.140.10 · AS12430 Vodafone Spain

Reputation 100/100

Classifying

HTML metadata

Title
Empresa de Telecomunicaciones - ZENER
Description
Empresa de telecomunicaciones líder del sector especializada en instalación, mantenimiento de redes y energías renovables.
Generator
webControl CMS 3.5
Canonical
https://www.zener.es/es/
Translations
  • de
  • en
  • es
  • fr
  • pt

Open Graph

url
https://www.zener.es/es/
title
Empresa de Telecomunicaciones
description
Empresa de telecomunicaciones líder del sector especializada en instalación, mantenimiento de redes y energías renovables.

Technology

Server
nginx

Third-party hosts loaded (1)

  • code.jquery.com×2

Social

DNS records live

NS
  • ns1.zener.es
  • ns2.zener.es
  • ns3.zener.es
MX
  • 1 d315504.a.ess.de.barracudanetworks.com
  • 10 d315504.b.ess.de.barracudanetworks.com
TXT
  • MS=5C95821E2C4547E9B6AACDF2D626506D2816DE36
Verified for
  • Google
  • Microsoft 365
  • OpenAI

Email authentication strong

SPF
v=spf1 include:spf.protection.outlook.com -all
strict (-all)
DMARC
v=DMARC1; p=reject; rua=mailto:informatica@zener.es; ruf=mailto:informatica@zener.es; pct=100
policy: reject (enforced)
DKIM
  • google: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDik9yBHN/+2DSB1sPbefYS6WoVw3I8bUuzKAqXMIyWsp1fOn7oEuKJBbWNPv0Dl2ucTs5s3lD37e4EGvNV48…
  • selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsc+KJ27/yEHIZ5sbTvViaqKhJgFJT2OIJ4/6foULi710TK8+jmMLbcY5akdEehd6PjIGv5/OFui+8V…
  • selector2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2KYG5IGQnxP+b+LZsS9K4cF2HTvcAZkwO6+YBBDo02L2ZMpQbrmZI2CbTzzxRMc3wRbYqoh5X+v/+r…
selectors probed

Certificate (current)

R13
from 2026-04-04 to 2026-07-03
Expires in 43 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 85/100 Checked live page: https://www.zener.es/es/

present
  • strict-transport-security
  • content-security-policy
  • x-frame-options
  • x-content-type-options
  • referrer-policy
findings
  • CSP allows unsafe inline scripts/styles
  • CSP uses wildcard sources
  • missing Permissions Policy
Header values
referrer-policy
no-referrer-when-downgrade
x-frame-options
SAMEORIGIN
x-content-type-options
nosniff
content-security-policy
block-all-mixed-content; connect-src 'self' *.google-analytics.com *.googleapis.com https://*.google.com https://*.doubleclick.net/j/collect https://cdn.plyr.io https://noembed.com https://*.facebook.com; font-src 'self' data: *.gstatic.com; frame-ancestors 'self'; frame-src 'self' *.google.com/recaptcha/ *.gstatic.com/recaptcha/ *.googletagmanager.com https://*.google.com youtube.com *.youtube.com youtube-nocookie.com *.youtube-nocookie.com https://*.vimeo.com/video/ https://www.facebook.com https://platform.twitter.com https://www.instagram.com https://*.slideshare.net; img-src 'self' data: *.ggpht.com *.google-analytics.com https://*.google.com/ads/ga-audiences *.googletagmanager.com *.gstatic.com *.doubleclick.net/r/ *.googleapis.com *.vimeocdn.com *.ytimg.com; manifest-src 'self' https://accounts.google.com/o/oauth2/auth; script-src 'self' 'unsafe-inline' 'unsafe-eval' https://*.google.com/recaptcha/ https://*.gstatic.com/recaptcha/ google-analytics.com *.google-analytics.com goog
strict-transport-security
max-age=63072000; includeSubDomains

Links to (5)

Linked from (1)