indexo.dev

nettles.cz

.cz crawl

First seen 2026-06-02 · Last seen 2026-06-02 · ok HTTP/1.1 200 223 ms crawled 2026-06-02

CZ · 81.91.86.14 · AS39790 Web4U s.r.o.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title
Nettles Consulting

Technology

Server
openresty

DNS records live

NS
  • ns.web4u.cz
  • ns2.web4u.cz
MX
  • 0 nettles-cz.mail.protection.outlook.com
Verified for
  • Google
  • Microsoft 365

Email authentication strong

SPF
v=spf1 include:spf.protection.outlook.com include:servers.mcsv.net include:_spf.web4u.cz -all
strict (-all)
DMARC
v=DMARC1; p=quarantine; rua=mailto:security@nettles.cz; ruf=mailto:security@nettles.cz
policy: quarantine
DKIM
  • selector1: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA9VLvPCRJrluvKzgbunKSRPjRRO1DL3gJbz1VjQNJfxUujpHrg6JdXTwIWmQGfsgVVVCPyb/qXRROZN…
  • k2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv2aC2KjGKLOwTweBY5A9RpjsxaBXR9r7OAU6U8/zn92ivImI75naUujWbItRI/QmL1jy5PWGqLwoUA…
selectors probed

Certificate (current)

R13
from 2026-05-26 to 2026-08-24
Expires in 81 days

Full certificate history on crt.sh ↗

HTTP security headers

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

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

Linked from (1)