Contacts

  • Holder

    SB:CESNET-ZSPO

  • Registrar

    ACTIVE 24, s.r.o. REG-ACTIVE24

    Sokolovská 394/17
    Praha 8
    186 00
    CZ

    +420.234262000

Website

Answer
The name has no address

DNS records

ten.cz

MX
TTL 1 hour
NS
TTL 1 hour
TXT
  • v=spf1 -all
TTL 1 hour
SOA
  • Primary server
    dns.cesnet.cz
    Contact
    hostmaster@cesnet.cz
    Serial
    2026032561
    Refresh
    8 hours
    Retry
    2 hours
    Expire
    21 days
    Negative TTL
    1 hour
TTL 1 hour
CAA
TTL 1 hour

www.ten.cz

CNAME
TTL 1 hour
A
TTL 1 hour
AAAA
TTL 1 hour

_dmarc.ten.cz

TXT
  • v=DMARC1; p=reject
TTL 1 hour

As nsa.cesnet.cz answers them

Reputation

Domain blocklists

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

Rankings

274,890 Tranco rank down from 272,779 on 2026-09-28
1.97Open PageRank, out of 10
8,612,169Open PageRank position
10Referring domains

From Tranco and Open PageRank

DNSSEC

Every link from the root to ten.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

ten.cz Verified

  • Found 1 DS records for ten.cz in the cz zone
  • DS=7858/SHA-256 has algorithm ECDSAP256SHA256
  • Found 1 RRSIGs over DS RRset
  • RRSIG=20081 and DNSKEY=20081 verifies the DS RRset
  • Found 3 DNSKEY records for ten.cz
  • DS=7858/SHA-256 verifies DNSKEY=7858/SEP
  • Found 2 RRSIGs over DNSKEY RRset
  • RRSIG=7041 over the DNSKEY RRset was made with a key that is not trusted here
  • RRSIG=7858 and DNSKEY=7858/SEP verifies the DNSKEY RRset
  • Found 1 RRSIGs over SOA RRset
  • RRSIG=58826 and DNSKEY=58826 verifies the SOA RRset