indexo.dev

denipv6.cz

.cz crawl

First seen 2026-05-27 · Last seen 2026-05-27 · ok HTTP/1.1 200 953 ms crawled 2026-05-30

CZ · 217.31.205.61 · AS25192 CZ.NIC, z.s.p.o.

Reputation 100/100

Classifying

HTML metadata

Title
IPv6 2026 - Den IPv6
Language
cs

Technology

Server
nginx
CMS
Gatsby
jQuery
3.2.1 known XSS (<3.5)

Contact

Email

Registration

Registrar
REG-CZNIC
Created
2024-03-04
Expires
2034-03-03 2832 days left
Updated
2024-04-23
Name servers
  • sld1.ns.nic.cz
  • sld2.ns.nic.cz
  • sld3.ns.nic.cz

DNS records live

NS
  • sld1.ns.nic.cz
  • sld2.ns.nic.cz
  • sld3.ns.nic.cz
MX
  • 10 mail.nic.cz
  • 15 mx.nic.cz

Email authentication strong

SPF
v=spf1 include:common-settings-dcwebs.nic.cz ~all
softfail (~all)
DMARC
v=DMARC1; p=reject; pct=100; rua=mailto:dmarc.reports@nic.cz; ruf=mailto:dmarc.reports@nic.cz; fo=1; aspf=r; adkim=r; rf=afrf; ri=86400; sp=reject
policy: reject (enforced) · sp=reject
DKIM
no key found at common selectors

Certificate (current)

E8
from 2026-04-03 to 2026-07-02
Expires in 31 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 75/100 Checked live page: https://denipv6.cz/cs/

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

Links to (3)

Linked from (1)