dumknihy.cz

.cz crawl

First seen 2026-06-01 · Last seen 2026-06-01 · ok HTTP 200 1194 ms crawled 2026-06-01

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

Reputation 92/100 no dmarc policy

DNS records live

NS

ns.web4u.cz
ns2.web4u.cz

MX

10 mx1.mailchannels.net
10 mx2.mailchannels.net

Email authentication weak

SPF: v=spf1 include:_spf.web4u.cz ~all
softfail (~all)
DMARC: not published
DKIM: no key found at common selectors

Certificate (current)

R13

from 2026-05-04 to 2026-08-02

Expires in 61 days

Full certificate history on crt.sh ↗

Linked from (1)

upecky.cz×1