DNS Gurus
13 records

IPv4 Addresses

TTL

Name Servers

TTL

Mail Servers

TTL
MX — 10
mx10.websupport.cz
10m
MX — 100
mx20.websupport.cz
10m

SOA Details

TTL
SOA Primary NS
ns1.websupport.sk
20m
SOA Responsible
admin.websupport.cz
SOA Serial
1779136120
SOA Times
Refresh 2h
Retry 34m
Expire 12d
Minimum TTL 42m

Certificate Authority Authorization

TTL

No CAA records were returned at this registrable domain name. With no CAA policy, any public certificate authority (CA) may issue TLS certificates for names under this zone unless a parent publishes CAA; add issue / issuewild / iodef records to restrict issuance.

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
10m
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).

DKIM

TTL

No DKIM TXT with `v=DKIM1` was returned for the selector names we probe automatically.

SPF (Sender Policy Framework)

TTL

No SPF TXT record was returned (`v=spf1` / `spf2.0/`). SPF tells receivers which hosts may send mail for this domain; without it, aligned DMARC and spoofing defenses are weaker.

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).

Text Content

TTL
TXT —
hosting-site=refilem-web-cz
10m

DNSSEC Public Keys

TTL
DNSKEY
256 3 13 109T5xq+H+TKHS6ze5LcyUOdcJMMlqMes5wXlVoLF7+ejdKXlBGUGzTqSAk2LG38ZfkZ/vyGO6Bs6/IncrRDrw==
20m
DNSKEY
257 3 13 b3ivvK/byKJJlEh5qLugWK5u3cnfoTB4w+/XPWvWHhpnA+TzFz8FHgCX7C4T41ttC/V+f0qOA66ZRLPZNJpFrQ==
20m

Delegation Signer

TTL
DS
40149 13 2 589E38ED56F7E1E5D8E06D6CE8F3914FA9BE0E67D5BA938141B05C345ABFF741
20m

DNSSEC Signatures

TTL
RRSIG
A 13 2 600 1791095381 1788411581 58361 refilem.cz DP+IZcenmvw8NnbJlXNDnuUtN0uYrApMVtUllYpIvvOxrmwqzBWvPqD538NVug0MOPccAmpiNguqEkjwjrdHhA==
10m