isotra.dk
Last scanned: 2026-08-31 10:54:53  ·  700ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers3 records   35ms
NameserverIP addressesPTRASN / ISP
ns1.websupport.cz 2a10:bbc0::11
45.10.97.11		 ns1.websupport.eu
ns1.websupport.eu		 AS25234 ACTIVE 24, s.r.o.
AS25234 ACTIVE 24, s.r.o.
ns2.websupport.cz 185.71.159.12
2a02:250:3::12		 ns2.websupport.eu
ns2.websupport.eu		 AS25234 ACTIVE 24, s.r.o.
AS25234 ACTIVE 24, s.r.o.
ns3.websupport.eu 2a10:bbc0::13
45.10.97.13		 ns3.websupport.eu
ns3.websupport.eu		 AS25234 ACTIVE 24, s.r.o.
AS25234 ACTIVE 24, s.r.o.
🌍 A Records1 records   40ms
IPTTLPTRASNISP / OrgCIDRCountryCity
37.9.175.165 3600s ing.r3.websupport.sk AS51013 WebSupport s.r.o. 37.9.168.0/21 🇸🇰 Slovakia —
📧 MX Records
📧
No MX records found
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscover37.9.175.165
🔶 Autoconfig37.9.175.165
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   253ms
TXT Record
v=spf1 include:isotra.cz -all
✉️ SPF
PolicyRecord (isotra.dk)
-all (hard fail) v=spf1 include:isotra.cz -all
📨 DMARC
PolicyRecord (_dmarc.isotra.dk)
p=reject v=DMARC1; p=reject; aspf=s; adkim=s; pct=100;
📬 MTA-STS
✗ No MTA-STS policy — SMTP TLS not enforced
📈 TLSRPT
✗ No TLSRPT record — no SMTP TLS failure reporting
📜 CAA Records
✗ No CAA records — any CA may issue certificates
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC116ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial1784182388
Primary NS (MNAME)ns1.websupport.cz
Responsible (RNAME)admin@websupport.cz
Refresh7200s
Retry2048s
Expire1048576s
Minimum (neg-cache TTL)2560s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
35ms
A
40ms
MX
40ms
AAAA
36ms
TXT
253ms
CAA
44ms
HTTPS
45ms
TLSA
193ms
SOA
0ms
MTA-STS
62ms
DNSSEC
116ms
SRV
83ms
Total
700ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-31 10:54:53 700ms 3 NS 1 A 0 MX 🔒 Secure View
2026-08-12 23:48:00 4558ms 3 NS 1 A 0 MX 🔒 Secure View
2026-08-07 07:16:57 1181ms 3 NS 1 A 0 MX 🔒 Secure View
2026-07-17 05:30:43 845ms 3 NS 1 A 0 MX 🔒 Secure View
2026-07-12 22:25:27 8621ms 3 NS 1 A 0 MX 🔒 Secure View
2026-07-08 16:50:36 1331ms 3 NS 1 A 0 MX 🔒 Secure View
2026-06-24 15:30:27 857ms 3 NS 1 A 0 MX 🔒 Secure View
2026-06-19 23:20:45 565ms 3 NS 1 A 0 MX 🔒 Secure View
2026-06-17 11:47:21 1307ms 3 NS 1 A 0 MX 🔒 Secure View
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