indexo.dev

selectsystem.cz

.cz crawl dns

First seen 2026-05-28 · Last seen 2026-05-31 · ok HTTP/1.1 200 285 ms crawled 2026-05-31

CZ · 188.116.64.160 · AS196822 SELECT SYSTEM, s.r.o.

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title
Internet Provider :: SELECT SYSTEM, s.r.o.
Description
Internet Provider, telekomunikační operátor a poskytovatel IPTV a VoIP
Language
cs-cz

Technology

Server
Apache
jQuery
1.4 known XSS (<3.5)
Stack
PHP
Analytics
  • Google Tag Manager
Social widgets
  • YouTube Embed

Third-party hosts loaded (4)

  • bucket.mlcdn.com×4
  • ajax.googleapis.com×1
  • www.googletagmanager.com×1
  • www.youtube.com×1

Contact

Email

DNS records live

NS
  • ns4.selectsystem.cz
  • ns5.selectsystem.cz
MX
  • 10 mail.spk.cz
  • 20 mail-backup.spk.cz

Email authentication partial

SPF
v=spf1 ip4:188.116.64.128/25 ip4:188.116.121.0/29 ip4:188.116.122.0/29 ip4:188.116.123.0/29 ip4:188.116.124.5 include:spf.smartemailing.cz -all
strict (-all)
DMARC
v=DMARC1; p=none; rua=mailto:admin@spk.cz,mailto:dmarc+670730@smartemailing.cz; fo=1; pct=100; ri=86400
policy: none (monitoring only)
DKIM
  • default: v=DKIM1; h=sha256; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2dnwnfSdulNMkFlCFzXy7HLJ9OqJAMsmZ8DLAgfIuZBgENiuAe8Dh9lEXK0a1Ci3Gd3R…
selectors probed

Certificate (current)

R13
from 2026-04-14 to 2026-07-13
Expires in 42 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 75/100 Checked live page: https://selectsystem.cz/

present
  • strict-transport-security
  • x-frame-options
  • x-content-type-options
  • referrer-policy
findings
  • missing Content Security Policy
  • missing Permissions Policy
Header values
referrer-policy
strict-origin-when-cross-origin
x-frame-options
SAMEORIGIN
x-content-type-options
nosniff
strict-transport-security
max-age=31536000; includeSubDomains; preload

Links to (6)

Linked from (1)