indexo.dev

bigthink.cz

.cz dns

First seen 2026-05-31 · Last seen 2026-06-02 · pending HTTP 403 crawled 2026-06-01 2 attempts

CZ · 89.187.149.64 · AS35592 Coolhousing s.r.o.

Reputation 94/100 dmarc monitor-only

http 403

Registration

Registrar
REG-WEDOS
Created
2014-03-07
Expires
2027-03-06 276 days left
Updated
2025-07-07
Name servers
  • ns1.tele3.cz
  • ns2.tele3.cz
  • ns3.tele3.eu
  • ns4.tele3.us

DNS records live

NS
  • ns1.tele3.cz
  • ns2.tele3.cz
  • ns3.tele3.eu
MX
  • 10 f1ab2a7bb8405d15.mx2.emailprofi.seznam.cz
  • 20 f1ab2a7bb8405d15.mx1.emailprofi.seznam.cz
Verified for
  • Google

Email authentication partial

SPF
v=spf1 mx ip4:89.187.149.122 include:_spf.google.com include:mail.bigthink.cz ~all
softfail (~all)
DMARC
v=DMARC1; p=none;
policy: none (monitoring only)
DKIM
no key found at common selectors

Certificate (current)

E8
from 2026-05-25 to 2026-08-23
Expires in 82 days

Full certificate history on crt.sh ↗