7-steel.dk
Last scanned: 2026-08-26 15:08:26  ·  1657ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers3 records   48ms
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   51ms
IPTTLPTRASNISP / OrgCIDRCountryCity
37.9.175.165 600s ing.r3.websupport.sk AS51013 WebSupport s.r.o. 37.9.168.0/21 🇸🇰 Slovakia —
📧 MX Records2 records   42ms
PriorityTTLMail ServerIP addressesPTRASN
10 600s mx10.active24.cz 2a00:4b40:aaaa:2101:45:13:137:85
45.13.137.85		 m1-u6-mx.active24.cz
m1-u6-mx.active24.cz		 AS51013 WebSupport s.r.o.
AS51013 WebSupport s.r.o.
100 600s mx20.active24.cz 2a00:4b40:aaaa:2101:45:13:137:86
45.13.137.86		 m1-u7-mx.active24.cz
m1-u7-mx.active24.cz		 AS51013 WebSupport s.r.o.
AS51013 WebSupport s.r.o.
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscoverweb.prod.bts.websupport.sk → 37.9.169.171
🔶 Autoconfigweb.prod.bts.websupport.sk → 37.9.169.173
🔷 AAAA Records (IPv6)1 records   43ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2a00:4b40:aaaa:2005::6 600s — AS51013 WebSupport s.r.o. 2a00:4b40:0:0:0:0:0:0/32 🇸🇰 Slovakia —
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
🔌 SRV Records1 records   113ms
ServicePriorityWeightPortTarget
_autodiscover._tcp 0 0 443 web.prod.bts.websupport.sk
📝 TXT Records2 records   275ms
TXT Record
spf2.0/pra a mx include:_sid.websupport.cz ?all
v=spf1 a mx include:_spf.websupport.cz ?all
✉️ SPF
PolicyRecord (7-steel.dk)
?all (neutral) v=spf1 a mx include:_spf.websupport.cz ?all
📨 DMARC
✗ No DMARC record — mail spoofing not restricted
📬 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)
🔐 DNSSEC117ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial1743541972
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
48ms
A
51ms
MX
42ms
AAAA
43ms
TXT
275ms
CAA
44ms
HTTPS
36ms
TLSA
131ms
SOA
0ms
MTA-STS
70ms
DNSSEC
117ms
SRV
113ms
Total
1657ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-26 15:08:26 1657ms 3 NS 1 A 2 MX 🔒 Secure View
2026-08-24 18:36:40 4811ms 3 NS 1 A 2 MX 🔒 Secure View
2026-07-31 22:04:49 1435ms 3 NS 1 A 2 MX 🔒 Secure View
2026-07-03 11:08:52 3434ms 3 NS 1 A 2 MX 🔒 Secure View
2026-06-20 00:23:09 2555ms 3 NS 1 A 2 MX 🔒 Secure View
2026-06-19 20:53:44 3604ms 3 NS 1 A 2 MX 🔒 Secure View
2026-06-16 12:39:19 911ms 3 NS 1 A 2 MX 🔒 Secure View
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