26
records
Name Servers
TTL
ten.cz. 1200 IN NS decsys.vsb.cz. ten.cz. 1200 IN NS nsa.ces.net. ten.cz. 1200 IN NS nsa.cesnet.cz. ten.cz. 1200 IN NS nsa.ten.cz.
Mail Servers
TTL
MX
—
10
20m
MX
—
10
20m
ten.cz. 1200 IN MX 10 ag1.cesnet.cz. ten.cz. 1200 IN MX 10 ag2.cesnet.cz.
SOA Details
TTL
20m
SOA
Responsible
hostmaster.cesnet.cz
SOA
Serial
2026032540
SOA
Times
Refresh
8h
Retry
2h
Expire
21d
Minimum TTL
1h
ten.cz. 1200 IN SOA dns.cesnet.cz. hostmaster.cesnet.cz. 2026032540 28800 7200 1814400 3600
Certificate Authority Authorization
TTL
20m
20m
CAA
—
0
issuemail
;
20m
ten.cz. 1200 IN CAA 0 issue "harica.gr" ten.cz. 1200 IN CAA 0 issue "letsencrypt.org" ten.cz. 1200 IN CAA 0 issue "sectigo.com" ten.cz. 1200 IN CAA 0 issuemail ";"
DMARC
TTL
DMARC
Policy
Organizational policy (p): how receivers treat mail that fails aligned DMARC checks — none (monitor only), quarantine (often junk), or reject (block).
none
quarantine
reject
20m
DMARC
Percentage
pct: share of mail that gets quarantine/reject; 100 = all failing messages (default).
100
DMARC
RUA
Aggregate DMARC reports (ZIP/XML). Optional but recommended for visibility.
No aggregate report URIs (RUA).
DMARC
RUF
Forensic (per-failure) reports. Often omitted for privacy or volume.
No forensic report URIs (RUF).
ten.cz. 1200 IN DMARC v=DMARC1; p=reject
DKIM
TTL
No DKIM TXT with `v=DKIM1` was returned for the selector names we probe automatically.
SPF (Sender Policy Framework)
TTL
SPF
SPFv1
| Qualifier | Mechanism | Target / value | Valid | Details |
|---|---|---|---|---|
| - Fail | all |
—
|
|
20m
ten.cz. 1200 IN TXT "v=spf1 -all"
MTA-STS
TTL
This hostname does not publish an MTA-STS policy (no v=STSv1 TXT at _mta-sts.<name> and/or no policy at https://mta-sts.<name>/.well-known/mta-sts.txt).
DNSSEC Public Keys
TTL
DNSKEY
257 3 13 S3FM75PBEpcdn1HAsw7TrcoK3Ah8Inh2RUQno7FeGYUaidS0KKEaiekWt+TLX1nrSoS/yj3eC18Otnct6V8EPQ==
20m
DNSKEY
256 3 13 0aqorIf8jQ1CRdEvjonaPrpVYUpfGX9OguQvLFwL/OPvauApwpm0sagZHFO/9Pw1D77dA8hQOqGvhFoREJ/aUg==
20m
ten.cz. 1200 IN DNSKEY 257 3 13 S3FM75PBEpcdn1HAsw7TrcoK3Ah8Inh2RUQno7FeGYUaidS0KKEaiekWt+TLX1nrSoS/yj3eC18Otnct6V8EPQ== ten.cz. 1200 IN DNSKEY 256 3 13 0aqorIf8jQ1CRdEvjonaPrpVYUpfGX9OguQvLFwL/OPvauApwpm0sagZHFO/9Pw1D77dA8hQOqGvhFoREJ/aUg==
Delegation Signer
TTL
DS
51990 13 2 9DDED9BD7412525424F756FDDEDB2C927C927F6BF7C5117A9C9FE80421A07226
20m
ten.cz. 1200 IN DS 51990 13 2 9DDED9BD7412525424F756FDDEDB2C927C927F6BF7C5117A9C9FE80421A07226
DNSSEC Signatures
TTL
RRSIG
MX 13 2 3600 1787161122 1784563722 49255 ten.cz BBbnHKvk/OR93+r41zqPzFoypTP2LjS1rh8v4G0WY5NoSi21KWFH56TWk+Tsm7BtDthAZBv9fFIDS3qqoVLtlQ==
20m
RRSIG
SOA 13 2 3600 1787917205 1785319805 49255 ten.cz x12/zbu/2b4+w8QP4vnX5HwWDocLJQXQJB6yNCJSNTl2KygOH73FLLKyMVWgUszYxr6q59EbJ8ilQEEh1MlwQg==
20m
RRSIG
NS 13 2 3600 1787161122 1784563722 49255 ten.cz IevlJFRsuA5PUdIehigE3cmgafGWfOgY9y77l2alU/TG57rnb5B+YtoFjjpRri2xs8dNNJemL8rHN0ezfH2zmg==
20m
RRSIG
CAA 13 2 3600 1787161122 1784563722 49255 ten.cz UJpyzdiTWVo99qsRa4blZtRSDf48sz7t3ypt/r9EAtwFFgolkS9w3cy+e9ZJPkTr7gUJkXRGn943sFkvA8Cohg==
20m
RRSIG
TYPE60 13 2 0 1787917205 1785319805 51990 ten.cz sr6H2Y11GX0Q5wGnDuMX/97kKzJpSPJoZG1hf8MUB8XCQvx1qU/ek/jeiKJbRGWPu0o2NSI28F8Iq4Ej3jqwgA==
10s
RRSIG
TYPE59 13 2 0 1787917205 1785319805 51990 ten.cz BUIJtPpeKpGL+u2v9baHAEaQ33ZfpNasbKAkBlbkGUnfNggT5oXRX16O5K0xxKyENtgUHBZZ1/fVfPXJ5iV4xg==
10s
RRSIG
TYPE51 13 2 3600 1787161122 1784563722 49255 ten.cz F6oExQM/K069Z9CSz41ekJOdWy37KcuyG6jGf9nOy3PEjnWCDOPRqFAFRULazfDjjqE5dz8SuYJzEcPmExpa8w==
20m
RRSIG
DNSKEY 13 2 3600 1787251122 1784653722 51990 ten.cz k36QBfVC2nsc3D8+nlp2gnSHH+cz+tQ448B6K5/0YpnVGX/6142nD7WD0FT8RPMrHCvL+oY82pZkJeAzXcUYEw==
20m
RRSIG
TYPE35 13 2 3600 1787161122 1784563722 49255 ten.cz krfaLuudOJBIp5F3rgc740JTiHejcB96vg1XR5wl0204ZSnQRvNBtlejKliQ4AL3XXJQjOTUvtFMh19Kx4hI3Q==
20m
RRSIG
TXT 13 2 3600 1787161122 1784563722 49255 ten.cz PhtvPRafdzFG9S3DZIbKs2h2lTYqDKhF/s2aInX0MJ84NxI/5O1afBbuKyT4lJTtpv6ZYi+Snfg3iLgxSr7LJw==
20m
ten.cz. 1200 IN RRSIG MX 13 2 3600 1787161122 1784563722 49255 ten.cz BBbnHKvk/OR93+r41zqPzFoypTP2LjS1rh8v4G0WY5NoSi21KWFH56TWk+Tsm7BtDthAZBv9fFIDS3qqoVLtlQ== ten.cz. 1200 IN RRSIG SOA 13 2 3600 1787917205 1785319805 49255 ten.cz x12/zbu/2b4+w8QP4vnX5HwWDocLJQXQJB6yNCJSNTl2KygOH73FLLKyMVWgUszYxr6q59EbJ8ilQEEh1MlwQg== ten.cz. 1200 IN RRSIG NS 13 2 3600 1787161122 1784563722 49255 ten.cz IevlJFRsuA5PUdIehigE3cmgafGWfOgY9y77l2alU/TG57rnb5B+YtoFjjpRri2xs8dNNJemL8rHN0ezfH2zmg== ten.cz. 1200 IN RRSIG CAA 13 2 3600 1787161122 1784563722 49255 ten.cz UJpyzdiTWVo99qsRa4blZtRSDf48sz7t3ypt/r9EAtwFFgolkS9w3cy+e9ZJPkTr7gUJkXRGn943sFkvA8Cohg== ten.cz. 10 IN RRSIG TYPE60 13 2 0 1787917205 1785319805 51990 ten.cz sr6H2Y11GX0Q5wGnDuMX/97kKzJpSPJoZG1hf8MUB8XCQvx1qU/ek/jeiKJbRGWPu0o2NSI28F8Iq4Ej3jqwgA== ten.cz. 10 IN RRSIG TYPE59 13 2 0 1787917205 1785319805 51990 ten.cz BUIJtPpeKpGL+u2v9baHAEaQ33ZfpNasbKAkBlbkGUnfNggT5oXRX16O5K0xxKyENtgUHBZZ1/fVfPXJ5iV4xg== ten.cz. 1200 IN RRSIG TYPE51 13 2 3600 1787161122 1784563722 49255 ten.cz F6oExQM/K069Z9CSz41ekJOdWy37KcuyG6jGf9nOy3PEjnWCDOPRqFAFRULazfDjjqE5dz8SuYJzEcPmExpa8w== ten.cz. 1200 IN RRSIG DNSKEY 13 2 3600 1787251122 1784653722 51990 ten.cz k36QBfVC2nsc3D8+nlp2gnSHH+cz+tQ448B6K5/0YpnVGX/6142nD7WD0FT8RPMrHCvL+oY82pZkJeAzXcUYEw== ten.cz. 1200 IN RRSIG TYPE35 13 2 3600 1787161122 1784563722 49255 ten.cz krfaLuudOJBIp5F3rgc740JTiHejcB96vg1XR5wl0204ZSnQRvNBtlejKliQ4AL3XXJQjOTUvtFMh19Kx4hI3Q== ten.cz. 1200 IN RRSIG TXT 13 2 3600 1787161122 1784563722 49255 ten.cz PhtvPRafdzFG9S3DZIbKs2h2lTYqDKhF/s2aInX0MJ84NxI/5O1afBbuKyT4lJTtpv6ZYi+Snfg3iLgxSr7LJw==