indexo.dev

internet1.cz

.cz dns crawl

First seen 2026-05-31 · Last seen 2026-06-03 · ok HTTP/1.1 200 170 ms crawled 2026-06-01

CZ · 109.248.251.51 · AS57707 Greendata s.r.o.

Reputation 89/100 weak security headers dmarc monitor-only

sector tech type parked

HTML metadata

Title
Internet 1 Domain Parking
Language
en

Technology

Server
nginx

DNS records live

NS
  • ns1.internet1.cz
  • ns2.internet1.cz
MX
  • 10 mail.internet1.cz

Email authentication partial

SPF
v=spf1 a mx ip4:88.208.121.58 ip4:109.248.251.51 ~all
softfail (~all)
DMARC
v=DMARC1; p=none; rua=mailto:dmarc-reports@internet1.cz; ruf=mailto:dmarc-reports@internet1.cz; fo=1;
policy: none (monitoring only)
DKIM
  • dkim: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC9zhWtyksLBkRjewGIuM21ZICBX9rinvw+FHmlbErJ/b+uQxrCFIOwOMva+IfJ/9JvZya0TTOTh2d6bSIVgB…
selectors probed

Certificate (current)

R12
from 2026-05-06 to 2026-08-04
Expires in 61 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 45/100 Checked live page: https://internet1.cz/

present
  • strict-transport-security
findings
  • short HSTS max-age
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
strict-transport-security
max-age=0

Linked from (2)