indexo.dev

polanka.cz

.cz crawl

First seen 2026-06-01 · Last seen 2026-06-01 · ok HTTP 200 1414 ms crawled 2026-06-01

CZ · 81.91.223.3 · AS39817 OvaNet, a.s.

Reputation 94/100 dmarc monitor-only

Registration

Registrar
REG-INTERNET-CZ
Created
2000-03-01
Expires
2027-02-28 271 days left
Updated
2024-06-20
Name servers
  • ns1.ostrava.cz
  • ns2.ostrava.cz
  • ns3.ostrava.cz

DNS records live

NS
  • ns1.ostrava.cz
  • ns2.ostrava.cz
  • ns3.ostrava.cz
MX
  • 5 smtp02.ostrava.cz
  • 5 smtp03.ostrava.cz
  • 5 smtp04.ostrava.cz
Verified for
  • Microsoft 365

Email authentication partial

SPF
v=spf1 mx ip4:81.91.223.5 ip4:81.91.223.8 ip4:81.91.222.147 ~all
softfail (~all)
DMARC
v=DMARC1; p=none; rua=mailto:dmarc@ostrava.cz
policy: none (monitoring only)
DKIM
no key found at common selectors

Certificate (current)

R13
from 2026-05-11 to 2026-08-09
Expires in 68 days

Full certificate history on crt.sh ↗

Linked from (1)