dsb-first.dk
Last scanned: 2026-08-28 07:21:43  ·  1104ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   47ms
NameserverIP addressesPTRASN / ISP
dns.dsb.dk 193.28.147.132 dns.dsb.dk AS41746 DSB (SOV)
ns.dsb.dk 193.28.147.131 ns.dsb.dk AS41746 DSB (SOV)
🌍 A Records
🌍
No A records found
📧 MX Records
📧
No MX records found
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   282ms
TXT Record
v=spf1 -all
✉️ SPF
PolicyRecord (dsb-first.dk)
-all (hard fail) v=spf1 -all
📨 DMARC
PolicyRecord (_dmarc.dsb-first.dk)
p=reject v=DMARC1; p=reject; rua=mailto:pfutvobx@ag.eu.dmarcadvisor.com; ruf=mailto:pfutvobx@fr.eu.dmarcadvisor.com; fo=1;
📬 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)
🔐 DNSSEC96ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsresolution failed: ncache nxrrset
🏷️ SOA0ms
FieldValue
Serial2022120701
Primary NS (MNAME)ns.dsb.dk
Responsible (RNAME)manager@dsb.dk
Refresh1800s
Retry600s
Expire1209600s
Minimum (neg-cache TTL)5400s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
47ms
A
45ms
MX
79ms
AAAA
58ms
TXT
282ms
CAA
40ms
HTTPS
74ms
TLSA
55ms
SOA
0ms
MTA-STS
134ms
DNSSEC
96ms
SRV
111ms
Total
1104ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-28 07:21:43 1104ms 2 NS 0 A 0 MX 🔓 Insecure View
2026-08-26 08:51:06 546ms 2 NS 0 A 0 MX 🔓 Insecure View
2026-07-21 22:49:20 24374ms 2 NS 0 A 0 MX 🔓 Insecure View
2026-07-15 21:18:34 16749ms 2 NS 0 A 0 MX 🔓 Insecure View
2026-06-24 18:49:46 438ms 2 NS 0 A 0 MX 🔓 Insecure View
2026-06-23 15:12:37 14278ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-21 19:16:44 411ms 2 NS 0 A 0 MX 🔓 Insecure View
2026-06-17 04:45:18 478ms 2 NS 0 A 0 MX 🔓 Insecure View
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