Contacts

  • Holder

    HABROSLAV

  • Registrar

    Web4U s.r.o. REG-WEB4U

    Korunní 2569/108, Vinohrady
    Praha 10
    10100
    CZ

    +420.270001456

Website

Answer
200 OKin 156 ms
Title
Úvod | Webshare.cz - moderní úložiště pro Vaše data
Server
Microsoft-IIS/7.5
Protocols
HTTP/1.1
Certificate
Let's Encrypt (YR1) for webshare.cz, valid until
www
The secure connection failed

DNS records

webshare.cz

A
TTL 5 min
MX
TTL 5 min
NS
TTL 5 min
TXT
TTL 5 min
SOA
  • Primary server
    ns.web4u.cz
    Contact
    admin@web4u.cz
    Serial
    2025052800
    Refresh
    4 hours
    Retry
    1 hour
    Expire
    14 days
    Negative TTL
    4 hours
TTL 5 min
CAA
None: any certificate authority may issue for this name

www.webshare.cz

CNAME
  • web.webshare.cz
TTL 5 min
A
TTL 5 min

_dmarc.webshare.cz

TXT
TTL 5 min

As ns.web4u.cz answers them

Reputation

Domain blocklists

  • Spamhaus DBL Not listed
  • SURBL Not listed
  • URIBL Not listed

Rankings

136,596 Tranco rank down from 110,319 on 2026-10-05
4.49Open PageRank, out of 10
1,249,596Open PageRank position
92Referring domains

From Tranco and Open PageRank

DNSSEC

Every link from the root to webshare.cz verifies.

. Verified

  • Found 3 DNSKEY records for .
  • DS=20326/SHA-256 verifies DNSKEY=20326/SEP
  • DS=38696/SHA-256 verifies DNSKEY=38696/SEP
  • Found 1 RRSIGs over DNSKEY RRset
  • RRSIG=38696 and DNSKEY=38696/SEP verifies the DNSKEY RRset

cz Verified

  • Found 1 DS records for cz in the . zone
  • DS=20237/SHA-256 has algorithm ECDSAP256SHA256
  • Found 1 RRSIGs over DS RRset
  • RRSIG=8763 and DNSKEY=8763 verifies the DS RRset
  • Found 2 DNSKEY records for cz
  • DS=20237/SHA-256 verifies DNSKEY=20237/SEP
  • Found 1 RRSIGs over DNSKEY RRset
  • RRSIG=20237 and DNSKEY=20237/SEP verifies the DNSKEY RRset

webshare.cz Verified

  • Found 1 DS records for webshare.cz in the cz zone
  • DS=10303/SHA-256 has algorithm ECDSAP384SHA384
  • Found 1 RRSIGs over DS RRset
  • RRSIG=20081 and DNSKEY=20081 verifies the DS RRset
  • Found 3 DNSKEY records for webshare.cz
  • DS=10303/SHA-256 verifies DNSKEY=10303/SEP
  • Found 2 RRSIGs over DNSKEY RRset
  • RRSIG=10038 over the DNSKEY RRset was made with a key that is not trusted here
  • RRSIG=10303 and DNSKEY=10303/SEP verifies the DNSKEY RRset
  • Found 1 RRSIGs over SOA RRset
  • RRSIG=10038 and DNSKEY=10038 verifies the SOA RRset